13708 files changed, 2068624 insertions, 973182 deletions

diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000000..8f4b96445c
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,39 @@
+;; Copyright (c) 2018 Urabe, Shyouhei.  All rights reserved.
+;;
+;; This file is a part of  the programming language Ruby.  Permission is hereby
+;; granted, to either  redistribute and/or modify this file,  provided that the
+;; conditions mentioned  in the  file COPYING  are met.   Consult the  file for
+;; details.
+
+((nil .
+     ((indent-tabs-mode . nil)
+      (require-final-newline . t)
+      (tab-width . 8)
+      (show-trailing-whitespace . t)
+      (whitespace-line-column . 80))) ;; See also [Misc #12277]
+
+ ;; (bat-mode . ((buffer-file-coding-system . utf-8-dos)))
+
+ (ruby-mode . ((ruby-indent-level . 2)))
+
+ (rdoc-mode . ((fill-column . 74)))
+
+ (yaml-mode . ((yaml-indent-offset . 2)))
+
+ (makefile-mode . ((indent-tabs-mode . t)))
+
+ (c-mode . ((c-file-style . "ruby")))
+
+ (c++-mode . ((c-file-style . "ruby")))
+
+ (change-log-mode .
+     ((buffer-file-coding-system . us-ascii)
+      (indent-tabs-mode . t)
+      (change-log-indent-text . 2)
+      (add-log-time-format . (lambda (&optional x y)
+        (let* ((time (or x (current-time)))
+	       (system-time-locale "C")
+	       (diff (+ (cadr time) 32400))
+	       (lo (% diff 65536))
+	       (hi (+ (car time) (/ diff 65536))))
+        (format-time-string "%a %b %e %H:%M:%S %Y" (list hi lo) t)))))))
diff --git a/.document b/.document
index 9a5067bc52..82ca602bfb 100644
--- a/.document
+++ b/.document
@@ -5,9 +5,36 @@
 
 # Process all the C source files
 *.c
+*.y
 
 # prelude
 prelude.rb
+rbconfig.rb
+
+array.rb
+ast.rb
+dir.rb
+gc.rb
+hash.rb
+io.rb
+kernel.rb
+marshal.rb
+numeric.rb
+nilclass.rb
+pack.rb
+pathname_builtin.rb
+ractor.rb
+string.rb
+symbol.rb
+timev.rb
+thread_sync.rb
+trace_point.rb
+warning.rb
+yjit.rb
+zjit.rb
+
+# Errno::*
+known_errors.inc
 
 # the lib/ directory (which has its own .document file)
 lib
@@ -16,13 +43,14 @@ lib
 ext
 
 # rdoc files
-ChangeLog
+NEWS.md
 
-NEWS
+README.md
+README.ja.md
 
-README
-README.EXT
-README.EXT.ja
-README.ja
+COPYING
+COPYING.ja
+
+LEGAL
 
 doc
diff --git a/.editorconfig b/.editorconfig
index 67abf4b978..4633a7acae 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -2,15 +2,29 @@ root = true
 
 [*]
 end_of_line = lf
+indent_size = 4
+indent_style = space
 insert_final_newline = true
-trim_trailing_whitespace = true
 tab_width = 8
-indent_style = tab
-indent_size = 4
+trim_trailing_whitespace = true
 
-[**.bat]
+[*.bat]
 end_of_line = crlf
 
-[**.rb]
-indent_style = space
+[*.gemspec]
+indent_size = 2
+
+[*.rb]
+indent_size = 2
+
+[*.yml]
+indent_size = 2
+
+[{*[Mm]akefile*,*.mak,*.mk,depend}]
+indent_style = tab
+
+[enc/*]
+indent_size = 2
+
+[reg*.[ch]]
 indent_size = 2
diff --git a/.gdbinit b/.gdbinit
index c8705a6ccf..bda544c641 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -1,80 +1,20 @@
+define ruby_gdb_init
+  init-if-undefined $color_type = "\033[31m"
+  init-if-undefined $color_highlite = "\033[36m"
+  init-if-undefined $color_end = "\033[m"
+end
+
+# set prompt \033[36m(gdb)\033[m\040
+
 define rp
-  if ruby_dummy_gdb_enums.special_consts
-  end
+  ruby_gdb_init
   if (VALUE)($arg0) & RUBY_FIXNUM_FLAG
     printf "FIXNUM: %ld\n", (long)($arg0) >> 1
   else
   if ((VALUE)($arg0) & ~(~(VALUE)0<<RUBY_SPECIAL_SHIFT)) == RUBY_SYMBOL_FLAG
     set $id = (($arg0) >> RUBY_SPECIAL_SHIFT)
-    if $id == '!' || $id == '+' || $id == '-' || $id == '*' || $id == '/' || $id == '%' || $id == '<' || $id == '>' || $id == '`'
-      printf "SYMBOL(:%c)\n", $id
-    else
-    if $id == idDot2
-      echo SYMBOL(:..)\n
-    else
-    if $id == idDot3
-      echo SYMBOL(:...)\n
-    else
-    if $id == idUPlus
-      echo SYMBOL(:+@)\n
-    else
-    if $id == idUMinus
-      echo SYMBOL(:-@)\n
-    else
-    if $id == idPow
-      echo SYMBOL(:**)\n
-    else
-    if $id == idCmp
-      echo SYMBOL(:<=>)\n
-    else
-    if $id == idLTLT
-      echo SYMBOL(:<<)\n
-    else
-    if $id == idLE
-      echo SYMBOL(:<=)\n
-    else
-    if $id == idGE
-      echo SYMBOL(:>=)\n
-    else
-    if $id == idEq
-      echo SYMBOL(:==)\n
-    else
-    if $id == idEqq
-      echo SYMBOL(:===)\n
-    else
-    if $id == idNeq
-      echo SYMBOL(:!=)\n
-    else
-    if $id == idEqTilde
-      echo SYMBOL(:=~)\n
-    else
-    if $id == idNeqTilde
-      echo SYMBOL(:!~)\n
-    else
-    if $id == idAREF
-      echo SYMBOL(:[])\n
-    else
-    if $id == idASET
-      echo SYMBOL(:[]=)\n
-    else
-      printf "SYMBOL(%ld)\n", $id
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
-    end
+    printf "%sSYMBOL%s: ", $color_type, $color_end
+    rp_id $id
   else
   if ($arg0) == RUBY_Qfalse
     echo false\n
@@ -90,88 +30,66 @@ define rp
   else
   if (VALUE)($arg0) & RUBY_IMMEDIATE_MASK
     if ((VALUE)($arg0) & RUBY_FLONUM_MASK) == RUBY_FLONUM_FLAG
-      printf "FLONUM: %g\n", (double)rb_float_value($arg0)
+      printf "%sFLONUM%s: %g\n", $color_type, $color_end, (double)rb_float_value($arg0)
     else
       echo immediate\n
     end
   else
   set $flags = ((struct RBasic*)($arg0))->flags
+  if ($flags & RUBY_FL_PROMOTED) == RUBY_FL_PROMOTED
+    printf "[PROMOTED] "
+  end
   if ($flags & RUBY_T_MASK) == RUBY_T_NONE
-    printf "T_NONE: "
+    printf "%sT_NONE%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_NIL
-    printf "T_NIL: "
+    printf "%sT_NIL%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_OBJECT
-    printf "T_OBJECT: "
-    print (struct RObject *)($arg0)
+    printf "%sT_OBJECT%s: ", $color_type, $color_end
+    print ((struct RObject *)($arg0))->basic
+    if ($flags & ROBJECT_EMBED)
+      print/x *((VALUE*)((struct RObject*)($arg0))->as.ary) @ (RSHAPE_CAPACITY(rb_obj_shape_id($arg0)))
+    else
+      print (((struct RObject *)($arg0))->as.heap)
+      if (((struct RObject*)($arg0))->as.heap.numiv) > 0
+        print/x *(((struct RObject*)($arg0))->as.heap.ivptr) @ (((struct RObject*)($arg0))->as.heap.numiv)
+      end
+    end
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_CLASS
-    printf "T_CLASS%s: ", ($flags & RUBY_FL_SINGLETON) ? "*" : ""
+    printf "%sT_CLASS%s%s: ", $color_type, ($flags & RUBY_FL_SINGLETON) ? "*" : "", $color_end
     rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_ICLASS
-    printf "T_ICLASS: "
+    printf "%sT_ICLASS%s: ", $color_type, $color_end
     rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_MODULE
-    printf "T_MODULE: "
+    printf "%sT_MODULE%s: ", $color_type, $color_end
     rp_class $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FLOAT
-    printf "T_FLOAT: %.16g ", (((struct RFloat*)($arg0))->float_value)
+    printf "%sT_FLOAT%s: %.16g ", $color_type, $color_end, (((struct RFloat*)($arg0))->float_value)
     print (struct RFloat *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_STRING
-    printf "T_STRING: "
-    set print address off
-    output (char *)(($flags & RUBY_FL_USER1) ? \
-	    ((struct RString*)($arg0))->as.heap.ptr : \
-	    ((struct RString*)($arg0))->as.ary)
-    set print address on
-    printf " bytesize:%ld ", ($flags & RUBY_FL_USER1) ? \
-            ((struct RString*)($arg0))->as.heap.len : \
-            (($flags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
-    if !($flags & RUBY_FL_USER1)
-      printf "(embed) "
-    else
-      if ($flags & RUBY_FL_USER2)
-        printf "(shared) "
-      end
-      if ($flags & RUBY_FL_USER3)
-        printf "(assoc) "
-      end
-    end
-    printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == 0
-      printf "coderange:unknown "
-    else
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_7BIT
-      printf "coderange:7bit "
-    else
-    if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_VALID
-      printf "coderange:valid "
-    else
-      printf "coderange:broken "
-    end
-    end
-    end
-    print (struct RString *)($arg0)
+    printf "%sT_STRING%s: ", $color_type, $color_end
+    rp_string $arg0 $flags
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_REGEXP
     set $regsrc = ((struct RRegexp*)($arg0))->src
     set $rsflags = ((struct RBasic*)$regsrc)->flags
-    printf "T_REGEXP: "
+    printf "%sT_REGEXP%s: ", $color_type, $color_end
+    set $len = ((struct RString*)($arg0))->len
     set print address off
-    output (char *)(($rsflags & RUBY_FL_USER1) ? \
-	    ((struct RString*)$regsrc)->as.heap.ptr : \
-	    ((struct RString*)$regsrc)->as.ary)
+    output *(char *)(($rsflags & RUBY_FL_USER1) ? \
+            ((struct RString*)$regsrc)->as.heap.ptr : \
+            ((struct RString*)$regsrc)->as.embed.ary) @ $len
     set print address on
-    printf " len:%ld ", ($rsflags & RUBY_FL_USER1) ? \
-            ((struct RString*)$regsrc)->as.heap.len : \
-            (($rsflags & (RUBY_FL_USER2|RUBY_FL_USER3|RUBY_FL_USER4|RUBY_FL_USER5|RUBY_FL_USER6)) >> RUBY_FL_USHIFT+2)
+    printf " len:%ld ", $len
     if $flags & RUBY_FL_USER6
       printf "(none) "
     end
@@ -187,122 +105,162 @@ define rp
   if ($flags & RUBY_T_MASK) == RUBY_T_ARRAY
     if ($flags & RUBY_FL_USER1)
       set $len = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
-      printf "T_ARRAY: len=%ld ", $len
+      printf "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
       printf "(embed) "
       if ($len == 0)
-	printf "{(empty)} "
+        printf "{(empty)} "
       else
-	output/x *((VALUE*)((struct RArray*)($arg0))->as.ary) @ $len
-	printf " "
+        print/x *((VALUE*)((struct RArray*)($arg0))->as.ary) @ $len
+        printf " "
       end
     else
       set $len = ((struct RArray*)($arg0))->as.heap.len
-      printf "T_ARRAY: len=%ld ", $len
+      printf "%sT_ARRAY%s: len=%ld ", $color_type, $color_end, $len
       if ($flags & RUBY_FL_USER2)
-	printf "(shared) shared="
-	output/x ((struct RArray*)($arg0))->as.heap.aux.shared
-	printf " "
+        printf "(shared) shared="
+        output/x ((struct RArray*)($arg0))->as.heap.aux.shared_root
+        printf " "
       else
-	printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
+        printf "(ownership) capa=%ld ", ((struct RArray*)($arg0))->as.heap.aux.capa
       end
       if ($len == 0)
-	printf "{(empty)} "
+        printf "{(empty)} "
       else
-	output/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
-	printf " "
+        print/x *((VALUE*)((struct RArray*)($arg0))->as.heap.ptr) @ $len
+        printf " "
       end
     end
     print (struct RArray *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FIXNUM
-    printf "T_FIXNUM: "
+    printf "%sT_FIXNUM%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_HASH
-    printf "T_HASH: ",
-    if ((struct RHash *)($arg0))->ntbl
-      printf "len=%ld ", ((struct RHash *)($arg0))->ntbl->num_entries
+    printf "%sT_HASH%s: ", $color_type, $color_end,
+    if (((struct RHash *)($arg0))->basic.flags & RHASH_ST_TABLE_FLAG)
+      set $st = (struct st_table *)((uintptr_t)($arg0) + sizeof(struct RHash))
+      printf "st len=%ld ", $st->num_entries
+      print $st
+    else
+      printf "li len=%ld bound=%ld ", \
+        ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_SIZE_MASK) >> RHASH_AR_TABLE_SIZE_SHIFT), \
+        ((((struct RHash *)($arg0))->basic.flags & RHASH_AR_TABLE_BOUND_MASK) >> RHASH_AR_TABLE_BOUND_SHIFT)
+	print (struct ar_table_struct *)((uintptr_t)($arg0) + sizeof(struct RHash))
     end
-    print (struct RHash *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_STRUCT
-    printf "T_STRUCT: len=%ld ", \
-      (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
+    set $len = (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
        ($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) >> (RUBY_FL_USHIFT+1) : \
        ((struct RStruct *)($arg0))->as.heap.len)
+    printf "%sT_STRUCT%s: len=%ld ", $color_type, $color_end, $len
     print (struct RStruct *)($arg0)
-    x/xw (($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
-          ((struct RStruct *)($arg0))->as.ary : \
-          ((struct RStruct *)($arg0))->as.heap.ptr)
+    output/x *(($flags & (RUBY_FL_USER1|RUBY_FL_USER2)) ? \
+              ((struct RStruct *)($arg0))->as.ary : \
+              ((struct RStruct *)($arg0))->as.heap.ptr) @ $len
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_BIGNUM
-    printf "T_BIGNUM: sign=%d len=%ld ", \
-      (($flags & RUBY_FL_USER1) != 0), \
-      (($flags & RUBY_FL_USER2) ? \
-       ($flags & (RUBY_FL_USER5|RUBY_FL_USER4|RUBY_FL_USER3)) >> (RUBY_FL_USHIFT+3) : \
-       ((struct RBignum*)($arg0))->as.heap.len)
-    if $flags & RUBY_FL_USER2
-      printf "(embed) "
-    end
-    print (struct RBignum *)($arg0)
-    x/xw (($flags & RUBY_FL_USER2) ? \
-          ((struct RBignum*)($arg0))->as.ary : \
-          ((struct RBignum*)($arg0))->as.heap.digits)
+    rp_bignum $arg0
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_RATIONAL
-    printf "T_RATIONAL: "
+    printf "%sT_RATIONAL%s: ", $color_type, $color_end
     print (struct RRational *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_COMPLEX
-    printf "T_COMPLEX: "
+    printf "%sT_COMPLEX%s: ", $color_type, $color_end
     print (struct RComplex *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FILE
-    printf "T_FILE: "
+    printf "%sT_FILE%s: ", $color_type, $color_end
     print (struct RFile *)($arg0)
     output *((struct RFile *)($arg0))->fptr
     printf "\n"
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_TRUE
-    printf "T_TRUE: "
+    printf "%sT_TRUE%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_FALSE
-    printf "T_FALSE: "
+    printf "%sT_FALSE%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_DATA
-    if ((struct RTypedData *)($arg0))->typed_flag == 1
-      printf "T_DATA(%s): ", ((struct RTypedData *)($arg0))->type->wrap_struct_name
-      print (struct RTypedData *)($arg0)
+    if ($flags & RUBY_TYPED_FL_IS_TYPED_DATA)
+      set $data = (struct RTypedData *)($arg0)
+      set $type = (const rb_data_type_t *)($data->type & ~1)
+      printf "%sT_DATA%s(%s): ", $color_type, $color_end, $type->wrap_struct_name
+      print *$type
+      if ($data->type & 1)
+        print (void *)&$data->data
+      else
+        print $data
+      end
     else
-      printf "T_DATA: "
-      print (struct RData *)($arg0)
+      printf "%sT_DATA%s: ", $color_type, $color_end
+      print *(struct RData *)($arg0)
     end
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_MATCH
-    printf "T_MATCH: "
+    printf "%sT_MATCH%s: ", $color_type, $color_end
     print (struct RMatch *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_SYMBOL
-    printf "T_SYMBOL: "
-    print (struct RBasic *)($arg0)
+    printf "%sT_SYMBOL%s: ", $color_type, $color_end
+    print (struct RSymbol *)($arg0)
+    set $id_type = ((struct RSymbol *)($arg0))->id & RUBY_ID_SCOPE_MASK
+    if $id_type == RUBY_ID_LOCAL
+      printf "l"
+    else
+    if $id_type == RUBY_ID_INSTANCE
+      printf "i"
+    else
+    if $id_type == RUBY_ID_GLOBAL
+      printf "G"
+    else
+    if $id_type == RUBY_ID_ATTRSET
+      printf "a"
+    else
+    if $id_type == RUBY_ID_CONST
+      printf "C"
+    else
+    if $id_type == RUBY_ID_CLASS
+      printf "c"
+    else
+      printf "j"
+    end
+    end
+    end
+    end
+    end
+    end
+    set $id_fstr = ((struct RSymbol *)($arg0))->fstr
+    rp_string $id_fstr
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_UNDEF
-    printf "T_UNDEF: "
+    printf "%sT_UNDEF%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   else
+  if ($flags & RUBY_T_MASK) == RUBY_T_IMEMO
+    printf "%sT_IMEMO%s(", $color_type, $color_end
+    output (enum imemo_type)(($flags>>RUBY_FL_USHIFT)&RUBY_IMEMO_MASK)
+    printf "): "
+    rp_imemo $arg0
+  else
   if ($flags & RUBY_T_MASK) == RUBY_T_NODE
-    printf "T_NODE("
+    printf "%sT_NODE%s(", $color_type, $color_end
     output (enum node_type)(($flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
     printf "): "
     print *(NODE *)($arg0)
   else
   if ($flags & RUBY_T_MASK) == RUBY_T_ZOMBIE
-    printf "T_ZOMBIE: "
+    printf "%sT_ZOMBIE%s: ", $color_type, $color_end
     print (struct RData *)($arg0)
   else
-    printf "unknown: "
+  if ($flags & RUBY_T_MASK) == RUBY_T_MOVED
+    printf "%sT_MOVED%s: ", $color_type, $color_end
+    print *(struct RMoved *)$arg0
+  else
+    printf "%sunknown%s: ", $color_type, $color_end
     print (struct RBasic *)($arg0)
   end
   end
@@ -336,24 +294,299 @@ define rp
   end
   end
   end
+  end
+  end
 end
 document rp
   Print a Ruby's VALUE.
 end
 
+define rp_id
+  set $id = (ID)$arg0
+  if $id == '!' || $id == '+' || $id == '-' || $id == '*' || $id == '/' || $id == '%' || $id == '<' || $id == '>' || $id == '`'
+    printf "(:%c)\n", $id
+  else
+  if $id == idDot2
+    printf "(:..)\n"
+  else
+  if $id == idDot3
+    printf "(:...)\n"
+  else
+  if $id == idUPlus
+    printf "(:+@)\n"
+  else
+  if $id == idUMinus
+    printf "(:-@)\n"
+  else
+  if $id == idPow
+    printf "(:**)\n"
+  else
+  if $id == idCmp
+    printf "(:<=>)\n"
+  else
+  if $id == idLTLT
+    printf "(:<<)\n"
+  else
+  if $id == idGTGT
+    printf "(:>>)\n"
+  else
+  if $id == idLE
+    printf "(:<=)\n"
+  else
+  if $id == idGE
+    printf "(:>=)\n"
+  else
+  if $id == idEq
+    printf "(:==)\n"
+  else
+  if $id == idEqq
+    printf "(:===)\n"
+  else
+  if $id == idNeq
+    printf "(:!=)\n"
+  else
+  if $id == idEqTilde
+    printf "(:=~)\n"
+  else
+  if $id == idNeqTilde
+    printf "(:!~)\n"
+  else
+  if $id == idAREF
+    printf "(:[])\n"
+  else
+  if $id == idASET
+    printf "(:[]=)\n"
+  else
+  if $id == idCOLON2
+    printf "(:'::')\n"
+  else
+  if $id == idANDOP
+    printf "(:&&)\n"
+  else
+  if $id == idOROP
+    printf "(:||)\n"
+  else
+  if $id == idANDDOT
+    printf "(:&.)\n"
+  else
+    if $id <= tLAST_OP_ID
+      printf "O"
+    else
+      set $id_type = $id & RUBY_ID_SCOPE_MASK
+      if $id_type == RUBY_ID_LOCAL
+        printf "l"
+      else
+      if $id_type == RUBY_ID_INSTANCE
+        printf "i"
+      else
+      if $id_type == RUBY_ID_GLOBAL
+        printf "G"
+      else
+      if $id_type == RUBY_ID_ATTRSET
+        printf "a"
+      else
+      if $id_type == RUBY_ID_CONST
+        printf "C"
+      else
+      if $id_type == RUBY_ID_CLASS
+        printf "c"
+      else
+        printf "j"
+      end
+      end
+      end
+      end
+      end
+      end
+    end
+    printf "(%ld): ", $id
+    print_id $id
+    echo \n
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+end
+document rp_id
+  Print an ID.
+end
+
+define output_string
+  set $flags = ((struct RBasic*)($arg0))->flags
+  set $len = ((struct RString*)($arg0))->len
+  if $len > 0
+    output *(char *)(($flags & RUBY_FL_USER1) ? \
+            ((struct RString*)($arg0))->as.heap.ptr : \
+            ((struct RString*)($arg0))->as.embed.ary) @ $len
+  else
+    output ""
+  end
+end
+
+define print_string
+  set $flags = ((struct RBasic*)($arg0))->flags
+  set $len = ((struct RString*)($arg0))->len
+  if $len > 0
+    printf "%s", *(char *)(($flags & RUBY_FL_USER1) ? \
+            ((struct RString*)($arg0))->as.heap.ptr : \
+            ((struct RString*)($arg0))->as.embed.ary) @ $len
+  end
+end
+
+define rp_string
+  output_string $arg0
+  printf " bytesize:%ld ", $len
+  if !($flags & RUBY_FL_USER1)
+    printf "(embed) "
+  else
+    if ($flags & RUBY_FL_USER2)
+      printf "(shared) "
+    end
+    if ($flags & RUBY_FL_USER3)
+      printf "(assoc) "
+    end
+  end
+  printf "encoding:%d ", ($flags & RUBY_ENCODING_MASK) >> RUBY_ENCODING_SHIFT
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == 0
+    printf "coderange:unknown "
+  else
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_7BIT
+    printf "coderange:7bit "
+  else
+  if ($flags & RUBY_ENC_CODERANGE_MASK) == RUBY_ENC_CODERANGE_VALID
+    printf "coderange:valid "
+  else
+    printf "coderange:broken "
+  end
+  end
+  end
+  print (struct RString *)($arg0)
+end
+document rp_string
+  Print the content of a String.
+end
+
+define rp_bignum
+  set $flags = ((struct RBignum*)($arg0))->basic.flags
+  set $len = (($flags & RUBY_FL_USER2) ? \
+       ($flags & (RUBY_FL_USER5|RUBY_FL_USER4|RUBY_FL_USER3)) >> (RUBY_FL_USHIFT+3) : \
+       ((struct RBignum*)($arg0))->as.heap.len)
+  printf "%sT_BIGNUM%s: sign=%d len=%ld ", $color_type, $color_end, \
+         (($flags & RUBY_FL_USER1) != 0), $len
+  if $flags & RUBY_FL_USER2
+    printf "(embed) "
+  end
+  print (struct RBignum *)($arg0)
+  set $ptr = (($flags & RUBY_FL_USER2) ? \
+              ((struct RBignum*)($arg0))->as.ary : \
+              ((struct RBignum*)($arg0))->as.heap.digits)
+  set $len = $len-1
+  printf "0x%x", $ptr[$len]
+  while $len > 0
+    set $len = $len-1
+    set $val = $ptr[$len]
+    set $w = sizeof($ptr[0])
+    printf "_"
+    if $w > 8
+      printf "%.32x", $val
+    else
+    if $w > 4
+      printf "%.16x", $val
+    else
+    if $w > 2
+      printf "%.8x", $val
+    else
+    if $w > 1
+      printf "%.4x", $val
+    else
+      printf "%.2x", $val
+    end
+    end
+    end
+    end
+  end
+  printf "\n"
+end
+document rp_bignum
+  Print the content of a Bignum.
+end
+
 define rp_class
+  set $class_and_classext = (struct RClass_and_rb_classext_t *)($arg0)
   printf "(struct RClass *) %p", (void*)$arg0
-  if ((struct RClass *)($arg0))->ptr.origin != $arg0
-    printf " -> %p", ((struct RClass *)($arg0))->ptr.origin
+  if $class_and_classext->classext->origin_ != (VALUE)$arg0
+    printf " -> %p", $class_and_classext->classext->origin_
   end
   printf "\n"
-  print *(struct RClass *)($arg0)
-  print *((struct RClass *)($arg0))->ptr
+  rb_classname $arg0
+  print/x *$class_and_classext
 end
 document rp_class
   Print the content of a Class/Module.
 end
 
+define rp_imemo
+  set $flags = (enum imemo_type)((((struct RBasic *)($arg0))->flags >> RUBY_FL_USHIFT) & RUBY_IMEMO_MASK)
+  if $flags == imemo_cref
+    printf "(rb_cref_t *) %p\n", (void*)$arg0
+    print *(rb_cref_t *)$arg0
+  else
+  if $flags == imemo_svar
+    printf "(struct vm_svar *) %p\n", (void*)$arg0
+    print *(struct vm_svar *)$arg0
+  else
+  if $flags == imemo_throw_data
+    printf "(struct vm_throw_data *) %p\n", (void*)$arg0
+    print *(struct vm_throw_data *)$arg0
+  else
+  if $flags == imemo_ifunc
+    printf "(struct vm_ifunc *) %p\n", (void*)$arg0
+    print *(struct vm_ifunc *)$arg0
+  else
+  if $flags == imemo_memo
+    printf "(struct MEMO *) %p\n", (void*)$arg0
+    print *(struct MEMO *)$arg0
+  else
+  if $flags == imemo_ment
+    printf "(rb_method_entry_t *) %p\n", (void*)$arg0
+    print *(rb_method_entry_t *)$arg0
+  else
+  if $flags == imemo_iseq
+    printf "(rb_iseq_t *) %p\n", (void*)$arg0
+    print *(rb_iseq_t *)$arg0
+  else
+    printf "(struct RIMemo *) %p\n", (void*)$arg0
+    print *(struct RIMemo *)$arg0
+  end
+  end
+  end
+  end
+  end
+  end
+  end
+end
+document rp_imemo
+  Print the content of a memo
+end
+
 define nd_type
   print (enum node_type)((((NODE*)($arg0))->flags&RUBY_NODE_TYPEMASK)>>RUBY_NODE_TYPESHIFT)
 end
@@ -378,260 +611,232 @@ end
 # Print members of ruby node.
 
 define nd_head
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_alen
-  printf "u2.argc: "
+  printf "%su2.argc%s: ", $color_highlite, $color_end
   p ($arg0).u2.argc
 end
 
 define nd_next
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_cond
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_body
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 define nd_else
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_orig
-  printf "u3.value: "
+  printf "%su3.value%s: ", $color_highlite, $color_end
   rp ($arg0).u3.value
 end
 
 
 define nd_resq
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 define nd_ensr
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_1st
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_2nd
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 
 define nd_stts
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 
-define nd_entry
-  printf "u3.entry: "
-  p ($arg0).u3.entry
-end
-
 define nd_vid
-  printf "u1.id: "
+  printf "%su1.id%s: ", $color_highlite, $color_end
   p ($arg0).u1.id
 end
 
 define nd_cflag
-  printf "u2.id: "
+  printf "%su2.id%s: ", $color_highlite, $color_end
   p ($arg0).u2.id
 end
 
 define nd_cval
-  printf "u3.value: "
+  printf "%su3.value%s: ", $color_highlite, $color_end
   rp ($arg0).u3.value
 end
 
-
-define nd_cnt
-  printf "u3.cnt: "
-  p ($arg0).u3.cnt
-end
-
 define nd_tbl
-  printf "u1.tbl: "
+  printf "%su1.tbl%s: ", $color_highlite, $color_end
   p ($arg0).u1.tbl
 end
 
 
 define nd_var
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_ibdy
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 define nd_iter
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_value
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 define nd_aid
-  printf "u3.id: "
+  printf "%su3.id%s: ", $color_highlite, $color_end
   p ($arg0).u3.id
 end
 
 
 define nd_lit
-  printf "u1.value: "
+  printf "%su1.value%s: ", $color_highlite, $color_end
   rp ($arg0).u1.value
 end
 
-
-define nd_frml
-  printf "u1.node: "
-  rp ($arg0).u1.node
-end
-
 define nd_rest
-  printf "u2.argc: "
+  printf "%su2.argc%s: ", $color_highlite, $color_end
   p ($arg0).u2.argc
 end
 
 define nd_opt
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 
 define nd_recv
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_mid
-  printf "u2.id: "
+  printf "%su2.id%s: ", $color_highlite, $color_end
   p ($arg0).u2.id
 end
 
 define nd_args
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
-
-define nd_noex
-  printf "u1.id: "
-  p ($arg0).u1.id
-end
-
 define nd_defn
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_old
-  printf "u1.id: "
+  printf "%su1.id%s: ", $color_highlite, $color_end
   p ($arg0).u1.id
 end
 
 define nd_new
-  printf "u2.id: "
+  printf "%su2.id%s: ", $color_highlite, $color_end
   p ($arg0).u2.id
 end
 
 
-define nd_cfnc
-  printf "u1.cfunc: "
-  p ($arg0).u1.cfunc
-end
-
-define nd_argc
-  printf "u2.argc: "
-  p ($arg0).u2.argc
-end
-
-
 define nd_cname
-  printf "u1.id: "
+  printf "%su1.id%s: ", $color_highlite, $color_end
   p ($arg0).u1.id
 end
 
 define nd_super
-  printf "u3.node: "
+  printf "%su3.node%s: ", $color_highlite, $color_end
   rp ($arg0).u3.node
 end
 
 
 define nd_modl
-  printf "u1.id: "
+  printf "%su1.id%s: ", $color_highlite, $color_end
   p ($arg0).u1.id
 end
 
 define nd_clss
-  printf "u1.value: "
+  printf "%su1.value%s: ", $color_highlite, $color_end
   rp ($arg0).u1.value
 end
 
 
 define nd_beg
-  printf "u1.node: "
+  printf "%su1.node%s: ", $color_highlite, $color_end
   rp ($arg0).u1.node
 end
 
 define nd_end
-  printf "u2.node: "
+  printf "%su2.node%s: ", $color_highlite, $color_end
   rp ($arg0).u2.node
 end
 
 define nd_state
-  printf "u3.state: "
+  printf "%su3.state%s: ", $color_highlite, $color_end
   p ($arg0).u3.state
 end
 
 define nd_rval
-  printf "u2.value: "
+  printf "%su2.value%s: ", $color_highlite, $color_end
   rp ($arg0).u2.value
 end
 
 
 define nd_nth
-  printf "u2.argc: "
+  printf "%su2.argc%s: ", $color_highlite, $color_end
   p ($arg0).u2.argc
 end
 
 
 define nd_tag
-  printf "u1.id: "
+  printf "%su1.id%s: ", $color_highlite, $color_end
   p ($arg0).u1.id
 end
 
 define nd_tval
-  printf "u2.value: "
+  printf "%su2.value%s: ", $color_highlite, $color_end
   rp ($arg0).u2.value
 end
 
+define nd_tree
+  set $buf = (struct RString *)rb_str_buf_new(0)
+  call dump_node((VALUE)($buf), rb_str_tmp_new(0), 0, ($arg0))
+  printf "%s\n", $buf->as.heap.ptr
+end
+
 define rb_p
   call rb_p($arg0)
 end
@@ -645,34 +850,31 @@ define rb_numtable_entry
     set $rb_numtable_p = $rb_numtable_tbl->as.packed.bins
     while $rb_numtable_p && $rb_numtable_p < $rb_numtable_tbl->as.packed.bins+$rb_numtable_tbl->num_entries
       if $rb_numtable_p.k == $rb_numtable_id
-	set $rb_numtable_key = $rb_numtable_p.k
-	set $rb_numtable_rec = $rb_numtable_p.v
-	set $rb_numtable_p = 0
+        set $rb_numtable_key = $rb_numtable_p.k
+        set $rb_numtable_rec = $rb_numtable_p.v
+        set $rb_numtable_p = 0
       else
-	set $rb_numtable_p = $rb_numtable_p + 1
+        set $rb_numtable_p = $rb_numtable_p + 1
       end
     end
   else
-    set $rb_numtable_p = $rb_numtable_tbl->as.big.bins[$rb_numtable_id % $rb_numtable_tbl->num_bins]
+    set $rb_numtable_p = $rb_numtable_tbl->as.big.bins[st_numhash($rb_numtable_id) % $rb_numtable_tbl->num_bins]
     while $rb_numtable_p
       if $rb_numtable_p->key == $rb_numtable_id
-	set $rb_numtable_key = $rb_numtable_p->key
-	set $rb_numtable_rec = $rb_numtable_p->record
-	set $rb_numtable_p = 0
+        set $rb_numtable_key = $rb_numtable_p->key
+        set $rb_numtable_rec = $rb_numtable_p->record
+        set $rb_numtable_p = 0
       else
-	set $rb_numtable_p = $rb_numtable_p->next
+        set $rb_numtable_p = $rb_numtable_p->next
       end
     end
   end
 end
 
 define rb_id2name
-  rb_numtable_entry global_symbols.id_str (ID)$arg0
-  if $rb_numtable_rec
-    rp $rb_numtable_rec
-  else
-    echo undef\n
-  end
+  ruby_gdb_init
+  printf "%sID%s: ", $color_type, $color_end
+  rp_id $arg0
 end
 document rb_id2name
   Print the name of id
@@ -683,10 +885,10 @@ define rb_method_entry
   set $rb_method_entry_id = (ID)$arg1
   set $rb_method_entry_me = (rb_method_entry_t *)0
   while !$rb_method_entry_me && $rb_method_entry_klass
-    rb_numtable_entry $rb_method_entry_klass->m_tbl $rb_method_entry_id
+    rb_numtable_entry $rb_method_entry_klass->m_tbl_wrapper->tbl $rb_method_entry_id
     set $rb_method_entry_me = (rb_method_entry_t *)$rb_numtable_rec
     if !$rb_method_entry_me
-      set $rb_method_entry_klass = (struct RClass *)$rb_method_entry_klass->ptr->super
+      set $rb_method_entry_klass = (struct RClass *)RCLASS_SUPER($rb_method_entry_klass)
     end
   end
   if $rb_method_entry_me
@@ -701,16 +903,20 @@ document rb_method_entry
 end
 
 define rb_classname
-  call classname($arg0)
-  rb_p $
-  print *(struct RClass*)($arg0)
+  set $rb_classname = ((struct RClass_and_rb_classext_t*)$arg0)->classext->classpath
+  if $rb_classname != RUBY_Qfalse
+    print_string $rb_classname
+    printf "\n"
+  else
+    echo anonymous class/module\n
+  end
 end
 
 define rb_ancestors
   set $rb_ancestors_module = $arg0
   while $rb_ancestors_module
-    rp $rb_ancestors_module
-    set $rb_ancestors_module = ((struct RClass *)($rb_ancestors_module))->ptr.super
+    rp_class $rb_ancestors_module
+    set $rb_ancestors_module = RCLASS_SUPER($rb_ancestors_module)
   end
 end
 document rb_ancestors
@@ -737,7 +943,7 @@ define iseq
       set $operand_size = ((INSN*)($arg0))->operand_size
       set $operands = ((INSN*)($arg0))->operands
       while $i < $operand_size
-	rp $operands[$i++]
+        rp $operands[$i++]
       end
     end
   end
@@ -747,7 +953,7 @@ define iseq
 end
 
 define rb_ps
-  rb_ps_vm ruby_current_vm
+  rb_ps_vm ruby_current_vm_ptr
 end
 document rb_ps
 Dump all threads and their callstacks
@@ -755,38 +961,309 @@ end
 
 define rb_ps_vm
   print $ps_vm = (rb_vm_t*)$arg0
-  set $ps_threads = (st_table*)$ps_vm->living_threads
-  if $ps_threads->entries_packed
-    set $ps_threads_i = 0
-    while $ps_threads_i < $ps_threads->num_entries
-      set $ps_threads_key = (st_data_t)$ps_threads->as.packed.entries[$ps_threads_i].key
-      set $ps_threads_val = (st_data_t)$ps_threads->as.packed.entries[$ps_threads_i].val
-      rb_ps_thread $ps_threads_key $ps_threads_val
-      set $ps_threads_i = $ps_threads_i + 1
-    end
-  else
-    set $ps_threads_ptr = (st_table_entry*)$ps_threads->head
-    while $ps_threads_ptr
-      set $ps_threads_key = (st_data_t)$ps_threads_ptr->key
-      set $ps_threads_val = (st_data_t)$ps_threads_ptr->record
-      rb_ps_thread $ps_threads_key $ps_threads_val
-      set $ps_threads_ptr = (st_table_entry*)$ps_threads_ptr->fore
+  set $ps_thread_ln      = $ps_vm->ractor.main_ractor.threads.set.n.next
+  set $ps_thread_ln_last = $ps_vm->ractor.main_ractor.threads.set.n.prev
+  while 1
+    set $ps_thread_th = (rb_thread_t *)$ps_thread_ln
+    set $ps_thread = (VALUE)($ps_thread_th->self)
+    rb_ps_thread $ps_thread
+    if $ps_thread_ln == $ps_thread_ln_last
+      loop_break
     end
+    set $ps_thread_ln = $ps_thread_ln->next
   end
 end
 document rb_ps_vm
 Dump all threads in a (rb_vm_t*) and their callstacks
 end
 
+define print_lineno
+  set $cfp = $arg0
+  set $iseq = $cfp->iseq
+  set $pos = $cfp->pc - $iseq->body->iseq_encoded
+  if $pos != 0
+    set $pos = $pos - 1
+  end
+
+  set $index = 0
+  set $size = $iseq->body->insns_info.size
+  set $table = $iseq->body->insns_info.body
+  set $positions = $iseq->body->insns_info.positions
+  #printf "size: %d\n", $size
+  if $size == 0
+  else
+  if $size == 1
+    printf "%d", $table[0].line_no
+  else
+    if $positions
+      # get_insn_info_linear_search
+      set $index = 1
+      while $index < $size
+        #printf "table[%d]: position: %d, line: %d, pos: %d\n", $i, $positions[$i], $table[$i].line_no, $pos
+        if $positions[$index] > $pos
+          loop_break
+        end
+        set $index = $index + 1
+        if $positions[$index] == $pos
+          loop_break
+        end
+      end
+    else
+      # get_insn_info_succinct_bitvector
+      set $sd = $iseq->body->insns_info.succ_index_table
+      set $immediate_table_size = sizeof($sd->imm_part) / sizeof(uint64_t) * 9
+      if $pos < $immediate_table_size
+        set $i = $pos / 9
+        set $j = $pos % 9
+        set $index = ((int)($sd->imm_part[$i] >> ($j * 7))) & 0x7f
+      else
+        set $block_index = ($pos - $immediate_table_size) / 512
+        set $block = &$sd->succ_part[$block_index]
+        set $block_bit_index = ($pos - $immediate_table_size) % 512
+        set $small_block_index = $block_bit_index / 64
+        set $small_block_popcount = $small_block_index == 0 ? 0 : (((int)($block->small_block_ranks >> (($small_block_index - 1) * 9))) & 0x1ff)
+        set $x = $block->bits[$small_block_index] << (63 - $block_bit_index % 64)
+        set $x = ($x & 0x5555555555555555) + ($x >> 1 & 0x5555555555555555)
+        set $x = ($x & 0x3333333333333333) + ($x >> 2 & 0x3333333333333333)
+        set $x = ($x & 0x0707070707070707) + ($x >> 4 & 0x0707070707070707)
+        set $x = ($x & 0x001f001f001f001f) + ($x >> 8 & 0x001f001f001f001f)
+        set $x = ($x & 0x0000003f0000003f) + ($x >>16 & 0x0000003f0000003f)
+        set $popcnt = ($x & 0x7f) + ($x >>32 & 0x7f)
+        set $index = $block->rank + $small_block_popcount + $popcnt
+      end
+    end
+    printf "%d", $table[$index-1].line_no
+  end
+  end
+end
+
+define check_method_entry
+  set $imemo = (struct RBasic *)$arg0
+  if $imemo != RUBY_Qfalse
+    set $type = ($imemo->flags >> 12) & 0x07
+    if $type == imemo_ment
+      set $me = (rb_callable_method_entry_t *)$imemo
+    else
+    if $type == imemo_svar
+      set $imemo = ((struct vm_svar *)$imemo)->cref_or_me
+      check_method_entry $imemo
+    end
+    end
+  end
+end
+
+define print_id
+  set $id = $arg0
+  # rb_id_to_serial
+  if $id > tLAST_OP_ID
+    set $serial = (rb_id_serial_t)($id >> RUBY_ID_SCOPE_SHIFT)
+  else
+    set $serial = (rb_id_serial_t)$id
+  end
+  if $serial && $serial <= ruby_global_symbols.last_id
+    set $idx = $serial / ID_ENTRY_UNIT
+    set $ids = (struct RArray *)ruby_global_symbols.ids
+    set $flags = $ids->basic.flags
+    if ($flags & RUBY_FL_USER1)
+      set $idsptr = $ids->as.ary
+      set $idslen = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
+    else
+      set $idsptr = $ids->as.heap.ptr
+      set $idslen = $ids->as.heap.len
+    end
+    if $idx < $idslen
+      set $t = 0
+      set $ary = (struct RArray *)$idsptr[$idx]
+      if $ary != RUBY_Qnil
+        set $flags = $ary->basic.flags
+        if ($flags & RUBY_FL_USER1)
+          set $aryptr = $ary->as.ary
+          set $arylen = (($flags & (RUBY_FL_USER3|RUBY_FL_USER4)) >> (RUBY_FL_USHIFT+3))
+        else
+          set $aryptr = $ary->as.heap.ptr
+          set $arylen = $ary->as.heap.len
+        end
+        set $result = $aryptr[($serial % ID_ENTRY_UNIT) * ID_ENTRY_SIZE + $t]
+        if $result != RUBY_Qnil
+          print_string $result
+        else
+          echo undef
+        end
+      end
+    end
+  end
+end
+
+define print_pathobj
+  set $flags = ((struct RBasic*)($arg0))->flags
+  if ($flags & RUBY_T_MASK) == RUBY_T_STRING
+    print_string $arg0
+  end
+  if ($flags & RUBY_T_MASK) == RUBY_T_ARRAY
+    if $flags & RUBY_FL_USER1
+      set $str = ((struct RArray*)($arg0))->as.ary[0]
+    else
+      set $str = ((struct RArray*)($arg0))->as.heap.ptr[0]
+    end
+    print_string $str
+  end
+end
+
 define rb_ps_thread
   set $ps_thread = (struct RTypedData*)$arg0
-  set $ps_thread_id = $arg1
-  print $ps_thread_th = (rb_thread_t*)$ps_thread->data
+  set $ps_thread_th = (rb_thread_t*)$ps_thread->data
+  printf "* #<Thread:%p rb_thread_t:%p native_thread:%p>\n", \
+    $ps_thread, $ps_thread_th, $ps_thread_th->nt
+  set $cfp = $ps_thread_th->ec->cfp
+  set $cfpend = (rb_control_frame_t *)($ps_thread_th->ec->vm_stack + $ps_thread_th->ec->vm_stack_size)-1
+  while $cfp < $cfpend
+    if $cfp->iseq
+      if !((VALUE)$cfp->iseq & RUBY_IMMEDIATE_MASK) && (((imemo_ifunc << RUBY_FL_USHIFT) | RUBY_T_IMEMO)==$cfp->iseq->flags & ((RUBY_IMEMO_MASK << RUBY_FL_USHIFT) | RUBY_T_MASK))
+        printf "%d:ifunc ", $cfpend-$cfp
+        set print symbol-filename on
+        output/a $cfp->iseq.body
+        set print symbol-filename off
+        printf "\n"
+      else
+      if $cfp->pc
+        set $location = $cfp->iseq->body->location
+        printf "%d:", $cfpend-$cfp
+        print_pathobj $location.pathobj
+        printf ":"
+        print_lineno $cfp
+        printf ":in `"
+        print_string $location.label
+        printf "'\n"
+      else
+        printf "%d: ???.rb:???:in `???'\n", $cfpend-$cfp
+      end
+      end
+    else
+      # if VM_FRAME_TYPE($cfp->flag) == VM_FRAME_MAGIC_CFUNC
+      set $ep = $cfp->ep
+      if ($ep[0] & 0xffff0001) == 0x55550001
+        #define VM_ENV_FLAG_LOCAL 0x02
+        #define VM_ENV_PREV_EP(ep)   GC_GUARDED_PTR_REF(ep[VM_ENV_DATA_INDEX_SPECVAL])
+        set $me = 0
+        set $env_specval = $ep[-1]
+        set $env_me_cref = $ep[-2]
+        while ($env_specval & 0x02) != 0
+          check_method_entry $env_me_cref
+          if $me != 0
+            loop_break
+          end
+          set $ep = $ep[0]
+          set $env_specval = $ep[-1]
+          set $env_me_cref = $ep[-2]
+        end
+        if $me == 0
+          check_method_entry $env_me_cref
+        end
+        printf "%d:", $cfpend-$cfp
+        set print symbol-filename on
+        output/a $me->def->body.cfunc.func
+        set print symbol-filename off
+        set $mid = $me->def->original_id
+        printf ":in `"
+        print_id $mid
+        printf "'\n"
+      else
+        printf "%d:unknown_frame:???:in `???'\n", $cfpend-$cfp
+      end
+    end
+    set $cfp = $cfp + 1
+  end
 end
 
-# Details: https://bugs.ruby-lang.org/projects/ruby-trunk/wiki/MachineInstructionsTraceWithGDB
+define rb_count_objects
+  set $objspace = ruby_current_vm_ptr->objspace
+  set $counts_00 = 0
+  set $counts_01 = 0
+  set $counts_02 = 0
+  set $counts_03 = 0
+  set $counts_04 = 0
+  set $counts_05 = 0
+  set $counts_06 = 0
+  set $counts_07 = 0
+  set $counts_08 = 0
+  set $counts_09 = 0
+  set $counts_0a = 0
+  set $counts_0b = 0
+  set $counts_0c = 0
+  set $counts_0d = 0
+  set $counts_0e = 0
+  set $counts_0f = 0
+  set $counts_10 = 0
+  set $counts_11 = 0
+  set $counts_12 = 0
+  set $counts_13 = 0
+  set $counts_14 = 0
+  set $counts_15 = 0
+  set $counts_16 = 0
+  set $counts_17 = 0
+  set $counts_18 = 0
+  set $counts_19 = 0
+  set $counts_1a = 0
+  set $counts_1b = 0
+  set $counts_1c = 0
+  set $counts_1d = 0
+  set $counts_1e = 0
+  set $counts_1f = 0
+  set $total = 0
+  set $i = 0
+  while $i < $objspace->heap_pages.allocated_pages
+    printf "\rcounting... %d/%d", $i, $objspace->heap_pages.allocated_pages
+    set $page = $objspace->heap_pages.sorted[$i]
+    set $p = $page->start
+    set $pend = $p + $page->total_slots
+    while $p < $pend
+      set $flags = $p->as.basic.flags & 0x1f
+      eval "set $counts_%02x = $counts_%02x + 1", $flags, $flags
+      set $p = $p + 1
+    end
+    set $total = $total + $page->total_slots
+    set $i = $i + 1
+  end
+  printf "\rTOTAL: %d, FREE: %d\n", $total, $counts_00
+  printf "T_OBJECT: %d\n", $counts_01
+  printf "T_CLASS: %d\n", $counts_02
+  printf "T_MODULE: %d\n", $counts_03
+  printf "T_FLOAT: %d\n", $counts_04
+  printf "T_STRING: %d\n", $counts_05
+  printf "T_REGEXP: %d\n", $counts_06
+  printf "T_ARRAY: %d\n", $counts_07
+  printf "T_HASH: %d\n", $counts_08
+  printf "T_STRUCT: %d\n", $counts_09
+  printf "T_BIGNUM: %d\n", $counts_0a
+  printf "T_FILE: %d\n", $counts_0b
+  printf "T_DATA: %d\n", $counts_0c
+  printf "T_MATCH: %d\n", $counts_0d
+  printf "T_COMPLEX: %d\n", $counts_0e
+  printf "T_RATIONAL: %d\n", $counts_0f
+  #printf "UNKNOWN_10: %d\n", $counts_10
+  printf "T_NIL: %d\n", $counts_11
+  printf "T_TRUE: %d\n", $counts_12
+  printf "T_FALSE: %d\n", $counts_13
+  printf "T_SYMBOL: %d\n", $counts_14
+  printf "T_FIXNUM: %d\n", $counts_15
+  printf "T_UNDEF: %d\n", $counts_16
+  #printf "UNKNOWN_17: %d\n", $counts_17
+  #printf "UNKNOWN_18: %d\n", $counts_18
+  #printf "UNKNOWN_19: %d\n", $counts_19
+  printf "T_IMEMO: %d\n", $counts_1a
+  printf "T_NODE: %d\n", $counts_1b
+  printf "T_ICLASS: %d\n", $counts_1c
+  printf "T_ZOMBIE: %d\n", $counts_1d
+  #printf "UNKNOWN_1E: %d\n", $counts_1e
+  printf "T_MASK: %d\n", $counts_1f
+end
+document rb_count_objects
+  Counts all objects grouped by type.
+end
+
+# Details: https://github.com/ruby/ruby/wiki/Machine-Instructions-Trace-with-GDB
 define trace_machine_instructions
-  set logging on
+  set logging enabled
   set height 0
   set width 0
   display/i $pc
@@ -800,3 +1277,60 @@ define SDR
   call rb_vmdebug_stack_dump_raw_current()
 end
 
+define rbi
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_LABEL
+    p *(LABEL*)$arg0
+  else
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_INSN
+    p *(INSN*)$arg0
+  else
+  if ((LINK_ELEMENT*)$arg0)->type == ISEQ_ELEMENT_ADJUST
+    p *(ADJUST*)$arg0
+  else
+    print *$arg0
+  end
+  end
+  end
+end
+
+define dump_node
+  set $str = rb_parser_dump_tree($arg0, 0)
+  set $flags = ((struct RBasic*)($str))->flags
+  printf "%s", (char *)(($flags & RUBY_FL_USER1) ? \
+                        ((struct RString*)$str)->as.heap.ptr : \
+                        ((struct RString*)$str)->as.embed.ary)
+end
+
+define print_flags
+  printf "RUBY_FL_WB_PROTECTED: %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_WB_PROTECTED ? "1" : "0"
+  printf "RUBY_FL_PROMOTED    : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_PROMOTED ? "1" : "0"
+  printf "RUBY_FL_FINALIZE    : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_FINALIZE ? "1" : "0"
+  printf "RUBY_FL_SHAREABLE   : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_SHAREABLE ? "1" : "0"
+  printf "RUBY_FL_EXIVAR      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_EXIVAR ? "1" : "0"
+  printf "RUBY_FL_FREEZE      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_FREEZE ? "1" : "0"
+
+  printf "RUBY_FL_USER0       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER0 ? "1" : "0"
+  printf "RUBY_FL_USER1       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER1 ? "1" : "0"
+  printf "RUBY_FL_USER2       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER2 ? "1" : "0"
+  printf "RUBY_FL_USER3       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER3 ? "1" : "0"
+  printf "RUBY_FL_USER4       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER4 ? "1" : "0"
+  printf "RUBY_FL_USER5       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER5 ? "1" : "0"
+  printf "RUBY_FL_USER6       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER6 ? "1" : "0"
+  printf "RUBY_FL_USER7       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER7 ? "1" : "0"
+  printf "RUBY_FL_USER8       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER8 ? "1" : "0"
+  printf "RUBY_FL_USER9       : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER9 ? "1" : "0"
+  printf "RUBY_FL_USER10      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER10 ? "1" : "0"
+  printf "RUBY_FL_USER11      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER11 ? "1" : "0"
+  printf "RUBY_FL_USER12      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER12 ? "1" : "0"
+  printf "RUBY_FL_USER13      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER13 ? "1" : "0"
+  printf "RUBY_FL_USER14      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER14 ? "1" : "0"
+  printf "RUBY_FL_USER15      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER15 ? "1" : "0"
+  printf "RUBY_FL_USER16      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER16 ? "1" : "0"
+  printf "RUBY_FL_USER17      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER17 ? "1" : "0"
+  printf "RUBY_FL_USER18      : %s\n", ((struct RBasic*)($arg0))->flags & RUBY_FL_USER18 ? "1" : "0"
+end
+
+source -s misc/gdb.py
+
+# Moved from beginning, since it fails on older gdbs
+set startup-with-shell off
diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
new file mode 100644
index 0000000000..d98646febf
--- /dev/null
+++ b/.git-blame-ignore-revs
@@ -0,0 +1,41 @@
+# This is a file used by GitHub to ignore the following commits on `git blame`.
+#
+# You can also do the same thing in your local repository with:
+# $ git config --local blame.ignoreRevsFile .git-blame-ignore-revs
+
+# Expand tabs
+5b21e94bebed90180d8ff63dad03b8b948361089
+c5e9af9c9d890578182a21e7b71b50334cd5579e
+e63a2115f64433b21cb5dd67c5bf8b30f87ef293
+712ac99e4d0384a941c80a9f48f62943ba7d97c0
+d1474affa8e105bece209cc9d594bb0a989859e1
+2da92388b948821269b18d6b178a680f17e41750
+5062c0c621d887367af8a054e5e5d83d7ec57dd3
+
+# Enable Style/StringLiterals cop for RubyGems/Bundler
+d7ffd3fea402239b16833cc434404a7af82d44f3
+
+# [ruby/digest] Revert tab-expansion in external files
+48b09aae7ec5632209229dcc294dd0d75a93a17f
+8a65cf3b61c60e4cb886f59a73ff6db44364bfa9
+39dc9f9093901d40d2998653948d5da38b18ee2c
+
+# [ruby/io-nonblock] Revert tab expansion
+f28287d34c03f472ffe90ea262bdde9affd4b965
+0d842fecb4f75ab3b1d4097ebdb8e88f51558041
+4ba2c66761d6a293abdfba409241d31063cefd62
+
+# Make benchmark indentation consistent
+fc4acf8cae82e5196186d3278d831f2438479d91
+
+# Make prism_compile.c indentation consistent
+40b2c8e5e7e6e5f83cee9276dc9c1922a69292d6
+d2c5867357ed88eccc28c2b3bd4a46e206e7ff85
+
+# Miss-and-revived commits
+a0f7de814ae5c299d6ce99bed5fb308a05d50ba0
+d4e24021d39e1f80f0055b55d91f8d5f22e15084
+7a56c316418980b8a41fcbdc94067b2bda2ad112
+e90282be7ba1bc8e3119f6e1a2c80356ceb3f80a
+26a9e0b4e31f7b5a9cbd755e0a15823a8fa51bae
+2f53985da9ee593fe524d408256835667938c7d7
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000..6ac6e6fcc3
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,9 @@
+*.gemspec diff=ruby
+*.rb diff=ruby
+*.inc.rs linguist-generated=true
+bin svn-properties=svn:ignore=ruby
+bin/* diff=ruby
+tool/update-deps diff=ruby
+tool/make-snapshot diff=ruby
+tool/format-release diff=ruby
+tool/leaked-globals diff=ruby
diff --git a/.github/SECURITY.md b/.github/SECURITY.md
new file mode 100644
index 0000000000..56baa29942
--- /dev/null
+++ b/.github/SECURITY.md
@@ -0,0 +1,9 @@
+# Security Policy
+
+## Supported Versions
+
+See <https://www.ruby-lang.org/en/downloads/branches/>.
+
+## Reporting a Vulnerability
+
+See <https://www.ruby-lang.org/en/security/>.
diff --git a/.github/actions/capiext/action.yml b/.github/actions/capiext/action.yml
new file mode 100644
index 0000000000..49562725f4
--- /dev/null
+++ b/.github/actions/capiext/action.yml
@@ -0,0 +1,86 @@
+name: rubyspec C-API extensions
+
+inputs:
+  builddir:
+    required: false
+    default: '.'
+  make:
+    required: false
+    default: 'make -s'
+
+outputs:
+  key:
+    value: >-
+      ${{
+      !steps.restore.outputs.cache-hit &&
+      github.ref == 'refs/heads/master' &&
+      steps.config.outputs.key
+      }}
+
+runs:
+  using: composite
+
+  steps:
+    - id: config
+      shell: bash
+      run: |
+        eval $(grep -e '^arch *=' -e '^ruby_version *=' -e '^DLEXT *=' Makefile |
+            sed 's/ *= */=/')
+        case "${ruby_version}" in
+        *+*) key=capiexts-${arch}-${ruby_version}-${{ hashFiles('src/spec/ruby/optional/capi/ext/*.[ch]') }};;
+        *)   key=;;
+        esac
+        echo version=$ruby_version >> $GITHUB_OUTPUT
+        echo key="$key" >> $GITHUB_OUTPUT
+        echo DLEXT=$DLEXT >> $GITHUB_OUTPUT
+      working-directory: ${{ inputs.builddir }}
+
+    - name: Restore previous CAPI extensions
+      uses: actions/cache/restore@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+      id: cache
+      with:
+        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
+        key: ${{ steps.config.outputs.key }}
+      if: ${{ steps.config.outputs.key }}
+
+    - name: Run test-spec with previous CAPI extension binaries
+      id: check
+      shell: bash
+      run: |
+        touch spec/ruby/optional/capi/ext/*.$DLEXT
+        [ ! -f spec/ruby/optional/capi/ext/\*.$DLEXT ]
+        ${{ inputs.make }} SPECOPTS=optional/capi test-spec
+      env:
+        DLEXT: ${{ steps.config.outputs.DLEXT }}
+      working-directory: ${{ inputs.builddir }}
+      if: ${{ steps.cache.outputs.cache-hit }}
+
+    - name: Strip CAPI extensions
+      id: strip
+      shell: bash
+      run: |
+        rm -f spec/ruby/optional/capi/ext/*.c
+        [ "$DLEXT" = bundle ] || # separated to .dSYM directories
+        strip spec/ruby/optional/capi/ext/*.$DLEXT
+      env:
+        DLEXT: ${{ steps.config.outputs.DLEXT }}
+      working-directory: ${{ inputs.builddir }}
+      if: >-
+        ${{true
+        && ! steps.cache.outputs.cache-hit
+        && github.ref_name == 'master'
+        }}
+
+    - name: Save CAPI extensions
+      uses: actions/cache/save@0400d5f644dc74513175e3cd8d07132dd4860809 # v4.2.4
+      with:
+        path: ${{ inputs.builddir }}/spec/ruby/optional/capi/ext/
+        key: ${{ steps.config.outputs.key }}
+      if: ${{ steps.strip.outcome == 'success' }}
+
+    - shell: bash
+      run: |
+        echo "::error::Change from ${prev} detected; bump up ABI version"
+      env:
+        prev: ${{ steps.config.outputs.version }}
+      if: ${{ always() && steps.check.outcome == 'failure' }}
diff --git a/.github/actions/compilers/action.yml b/.github/actions/compilers/action.yml
new file mode 100644
index 0000000000..ab5b56a889
--- /dev/null
+++ b/.github/actions/compilers/action.yml
@@ -0,0 +1,133 @@
+name: Compiles ruby in a container
+description: >-
+  Makes ruby using a dedicated container
+
+inputs:
+  tag:
+    required: false
+    default: clang-20
+    description: >-
+      container image tag to use in this run.
+
+  with_gcc:
+    required: false
+    description: >-
+      override compiler path & flags.
+
+  CFLAGS:
+    required: false
+    description: >-
+      C compiler flags to override.
+
+  CXXFLAGS:
+    required: false
+    description: >-
+      C++ compiler flags to override.
+
+  optflags:
+    required: false
+    # -O1 is faster than -O3 in our tests... Majority of time are consumed trying
+    # to optimize binaries.  Also GitHub Actions run on relatively modern CPUs
+    # compared to, say, GCC 4 or Clang 3.  We don't specify `-march=native`
+    # because compilers tend not understand what the CPU is.
+    default: '-O1'
+    description: >-
+      Compiler flags for optimisations.
+
+  cppflags:
+    required: false
+    description: >-
+      Additional preprocessor flags.
+
+  append_configure:
+    required: false
+    default: >-
+      --without-valgrind
+      --without-jemalloc
+      --without-gmp
+    description: >-
+      flags to append to configure.
+
+  enable_shared:
+    required: false
+    default: true
+    description: >-
+      Whether to build libruby.so.
+
+  check:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make check`
+
+  test_all:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make test-all` with options for test-all.
+
+  test_spec:
+    required: false
+    default: ''
+    description: >-
+      Whether to run `make test-spec` with options for mspec.
+
+  static_exts:
+    required: false
+    description: >-
+      whitespace separated list of extensions that need be linked statically.
+
+runs:
+  using: composite
+  steps:
+    - shell: bash
+      run: docker pull --quiet 'ghcr.io/ruby/ruby-ci-image:${{ inputs.tag }}'
+
+    - name: Enable Launchable conditionally
+      id: enable-launchable
+      run: echo "enable-launchable=true" >> $GITHUB_OUTPUT
+      shell: bash
+      if: >-
+        ${{
+        github.repository == 'ruby/ruby' ||
+        (github.repository != 'ruby/ruby' && env.LAUNCHABLE_TOKEN)
+        }}
+
+    - name: compile
+      shell: bash
+      run: >-
+        docker run
+        --rm
+        --user=root
+        --volume '${{ github.workspace }}:/github/workspace:ro'
+        --workdir=/github/workspace
+        --entrypoint=/github/workspace/.github/actions/compilers/entrypoint.sh
+        --env CI
+        --env GITHUB_ACTION
+        --env INPUT_WITH_GCC='${{ inputs.with_gcc || inputs.tag }}'
+        --env INPUT_CFLAGS='${{ inputs.CFLAGS }}'
+        --env INPUT_CXXFLAGS='${{ inputs.CXXFLAGS }}'
+        --env INPUT_OPTFLAGS='${{ inputs.OPTFLAGS }}'
+        --env INPUT_CPPFLAGS='${{ inputs.cppflags }}'
+        --env INPUT_APPEND_CONFIGURE='${{ inputs.append_configure }}'
+        --env INPUT_CHECK='${{ inputs.check }}'
+        --env INPUT_TEST_ALL='${{ inputs.test_all }}'
+        --env INPUT_TEST_SPEC='${{ inputs.test_spec }}'
+        --env INPUT_ENABLE_SHARED='${{ inputs.enable_shared }}'
+        --env INPUT_STATIC_EXTS='${{ inputs.static_exts }}'
+        --env LAUNCHABLE_ORGANIZATION='${{ github.repository_owner }}'
+        --env LAUNCHABLE_WORKSPACE='${{ github.event.repository.name }}'
+        --env LAUNCHABLE_ENABLED='${{ steps.enable-launchable.outputs.enable-launchable || false }}'
+        --env GITHUB_PR_HEAD_SHA='${{ github.event.pull_request.head.sha || github.sha }}'
+        --env GITHUB_PULL_REQUEST_URL='${{ github.event.pull_request.html_url }}'
+        --env GITHUB_REF='${{ github.ref }}'
+        --env GITHUB_ACTIONS
+        --env GITHUB_RUN_ID
+        --env GITHUB_REPOSITORY
+        --env GITHUB_WORKFLOW
+        --env GITHUB_RUN_NUMBER
+        --env GITHUB_EVENT_NAME
+        --env GITHUB_SHA
+        --env GITHUB_HEAD_REF
+        --env GITHUB_SERVER_URL
+        'ghcr.io/ruby/ruby-ci-image:${{ inputs.tag }}'
diff --git a/.github/actions/compilers/entrypoint.sh b/.github/actions/compilers/entrypoint.sh
new file mode 100755
index 0000000000..b554151091
--- /dev/null
+++ b/.github/actions/compilers/entrypoint.sh
@@ -0,0 +1,90 @@
+#! /bin/bash
+
+# Copyright (c) 2024 Ruby developers.  All rights reserved.
+#
+# This file is  a part of the programming language  Ruby.  Permission is hereby
+# granted, to  either redistribute and/or  modify this file, provided  that the
+# conditions  mentioned in  the file  COPYING are  met.  Consult  the file  for
+# details.
+
+grouped()
+{
+    echo "::group::${@}"
+    "${@}"
+    echo "::endgroup::"
+}
+
+set -e
+set -u
+set -o pipefail
+
+srcdir="/github/workspace/src"
+builddir="$(mktemp -dt)"
+
+export GITHUB_WORKFLOW='Compilations'
+export CONFIGURE_TTY='never'
+export RUBY_DEBUG='ci rgengc'
+export RUBY_TESTOPTS='-q --color=always --tty=no'
+export RUBY_DEBUG_COUNTER_DISABLE='1'
+export GNUMAKEFLAGS="-j$((1 + $(nproc)))"
+
+case "x${INPUT_ENABLE_SHARED}" in
+x | xno | xfalse )
+    enable_shared='--disable-shared'
+    ;;
+*)
+    enable_shared='--enable-shared'
+    ;;
+esac
+
+pushd ${builddir}
+
+grouped git config --global --add safe.directory ${srcdir}
+
+grouped ${srcdir}/configure        \
+    -C                             \
+    --with-gcc="${INPUT_WITH_GCC}" \
+    --enable-debug-env             \
+    --disable-install-doc          \
+    --with-ext=-test-/cxxanyargs,+ \
+    --without-git                  \
+    ${enable_shared}               \
+    ${INPUT_APPEND_CONFIGURE}      \
+    CFLAGS="${INPUT_CFLAGS}"       \
+    CXXFLAGS="${INPUT_CXXFLAGS}"   \
+    optflags="${INPUT_OPTFLAGS}"   \
+    cppflags="${INPUT_CPPFLAGS}"   \
+    debugflags='-ggdb3' # -g0 disables backtraces when SEGV.  Do not set that.
+
+popd
+
+if [[ -n "${INPUT_STATIC_EXTS}" ]]; then
+    echo "::group::ext/Setup"
+    set -x
+    mkdir ${builddir}/ext
+    (
+        for ext in ${INPUT_STATIC_EXTS}; do
+            echo "${ext}"
+        done
+    ) >> ${builddir}/ext/Setup
+    set +x
+    echo "::endgroup::"
+fi
+
+if [ -n "$INPUT_TEST_ALL" ]; then
+  tests=" -- $INPUT_TEST_ALL"
+else
+  tests=" -- ruby -ext-"
+fi
+
+pushd ${builddir}
+
+grouped make showflags
+grouped make all
+# grouped make install
+
+# Run only `make test` by default. Run other tests if specified.
+grouped make test
+if [[ -n "$INPUT_CHECK" ]]; then grouped make test-tool; fi
+if [[ -n "$INPUT_CHECK" || -n "$INPUT_TEST_ALL" ]]; then grouped make test-all TESTS="$tests"; fi
+if [[ -n "$INPUT_CHECK" || -n "$INPUT_TEST_SPEC" ]]; then grouped env CHECK_LEAKS=true make test-spec MSPECOPT="$INPUT_TEST_SPEC"; fi
diff --git a/.github/actions/launchable/setup/action.yml b/.github/actions/launchable/setup/action.yml
new file mode 100644
index 0000000000..16af8fc3fd
--- /dev/null
+++ b/.github/actions/launchable/setup/action.yml
@@ -0,0 +1,313 @@
+name: Set up Launchable
+description: >-
+  Install the required dependencies and execute the necessary Launchable commands for test recording
+
+inputs:
+  os:
+    required: true
+    description: The operating system that CI runs on. This value is used in Launchable flavor.
+
+  test-opts:
+    default: none
+    required: false
+    description: >-
+      Test options that determine how tests are run.
+      This value is used in the Launchable flavor.
+
+  launchable-token:
+    required: false
+    description: >-
+      Launchable token is needed if you want to run Launchable on your forked repository.
+      See https://github.com/ruby/ruby/wiki/CI-Servers#launchable-ci for details.
+
+  builddir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to create Launchable report file.
+
+  srcdir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to (re-)checkout source codes. Launchable retrieves the commit information
+      from the directory.
+
+  test-task:
+    required: false
+    default: ${{ matrix.test_task }}
+    description: >-
+      Specifies a single test task to be executed.
+      This value is used in the Launchable flavor.
+      Either 'test-task' or 'multi-test-tasks' must be configured.
+
+  test-tasks:
+    required: false
+    default: '[]'
+    description: >-
+      Specifies an array of multiple test tasks to be executed.
+      For example: '["test", "test-all"]'.
+      If you want to run a single test task, use the 'test-task' input instead.
+
+  is-yjit:
+    required: false
+    default: 'false'
+    description: >-
+      Whether this workflow is executed on YJIT.
+
+outputs:
+  stdout_report_path:
+    value: ${{ steps.global.outputs.stdout_report_path }}
+    description: >-
+      Report file path for standard output.
+
+  stderr_report_path:
+    value: ${{ steps.global.outputs.stderr_report_path }}
+    description: >-
+      Report file path for standard error.
+
+runs:
+  using: composite
+
+  steps:
+    - name: Enable Launchable conditionally
+      id: enable-launchable
+      run: echo "enable-launchable=true" >> $GITHUB_OUTPUT
+      shell: bash
+      if: >-
+        ${{
+        (github.repository == 'ruby/ruby'
+          || (github.repository != 'ruby/ruby'
+          && env.LAUNCHABLE_TOKEN))
+        && (inputs.test-task == 'check'
+          || inputs.test-task == 'test-all'
+          || inputs.test-task == 'test'
+          || contains(fromJSON(inputs.test-tasks), 'test-all')
+          || contains(fromJSON(inputs.test-tasks), 'test'))
+        }}
+
+    # Launchable CLI requires Python and Java.
+    # https://www.launchableinc.com/docs/resources/cli-reference/
+    - name: Set up Python
+      uses: actions/setup-python@871daa956ca9ea99f3c3e30acb424b7960676734 # v5.0.0
+      with:
+        python-version: "3.x"
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && !endsWith(inputs.os, 'ppc64le') && !endsWith(inputs.os, 's390x') }}
+
+    - name: Set up Java
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'temurin'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && !endsWith(inputs.os, 'ppc64le') && !endsWith(inputs.os, 's390x') }}
+
+    - name: Set up Java ppc64le
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'semeru'
+        architecture: 'ppc64le'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && endsWith(inputs.os, 'ppc64le') }}
+
+    - name: Set up Java s390x
+      uses: actions/setup-java@7a445ee88d4e23b52c33fdc7601e40278616c7f8 # v4.0.0
+      with:
+        distribution: 'semeru'
+        architecture: 's390x'
+        java-version: '17'
+      if: >-
+        ${{ steps.enable-launchable.outputs.enable-launchable
+        && endsWith(inputs.os, 's390x') }}
+
+    - name: Set global vars
+      id: global
+      shell: bash
+      run: |
+        test_all_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test-all' || contains(fromJSON(inputs.test-tasks), 'test-all') }}"
+        btest_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test' || contains(fromJSON(inputs.test-tasks), 'test') }}"
+        test_spec_enabled="${{ inputs.test-task == 'check' ||  inputs.test-task == 'test-spec' || contains(fromJSON(inputs.test-tasks), 'test-spec') }}"
+        echo test_all_enabled="${test_all_enabled}" >> $GITHUB_OUTPUT
+        echo btest_enabled="${btest_enabled}" >> $GITHUB_OUTPUT
+        echo test_spec_enabled="${test_spec_enabled}" >> $GITHUB_OUTPUT
+        echo test_all_report_file='launchable_test_all_report.json' >> $GITHUB_OUTPUT
+        echo btest_report_file='launchable_btest_report.json' >> $GITHUB_OUTPUT
+        echo test_spec_report_dir='launchable_test_spec_report' >> $GITHUB_OUTPUT
+        echo stdout_report_path="launchable_stdout.log" >> $GITHUB_OUTPUT
+        echo stderr_report_path="launchable_stderr.log" >> $GITHUB_OUTPUT
+      if: steps.enable-launchable.outputs.enable-launchable
+
+    - name: Set environment variables for Launchable
+      shell: bash
+      run: |
+        : # GITHUB_PULL_REQUEST_URL are used for commenting test reports in Launchable Github App.
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/link.py#L42
+        echo "GITHUB_PULL_REQUEST_URL=${{ github.event.pull_request.html_url }}" >> $GITHUB_ENV
+        : # The following envs are necessary in Launchable tokenless authentication.
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L20
+        echo "LAUNCHABLE_ORGANIZATION=${{ github.repository_owner }}" >> $GITHUB_ENV
+        echo "LAUNCHABLE_WORKSPACE=${{ github.event.repository.name }}" >> $GITHUB_ENV
+        : # https://github.com/launchableinc/cli/blob/v1.80.1/launchable/utils/authentication.py#L71
+        echo "GITHUB_PR_HEAD_SHA=${{ github.event.pull_request.head.sha || github.sha }}" >> $GITHUB_ENV
+        echo "LAUNCHABLE_TOKEN=${{ inputs.launchable-token }}" >> $GITHUB_ENV
+        : # To prevent a slowdown in CI, disable request retries when the Launchable server is unstable.
+        echo "LAUNCHABLE_SKIP_TIMEOUT_RETRY=1" >> $GITHUB_ENV
+        echo "LAUNCHABLE_COMMIT_TIMEOUT=1" >> $GITHUB_ENV
+      if: steps.enable-launchable.outputs.enable-launchable
+
+    - name: Set up path
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      # Since updated PATH variable will be available in only subsequent actions, we need to add the path beforehand.
+      # https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#adding-a-system-path
+      run: echo "$(python -msite --user-base)/bin" >> $GITHUB_PATH
+      if: >-
+        ${{
+        steps.enable-launchable.outputs.enable-launchable
+        && (startsWith(inputs.os, 'macos')
+          || endsWith(inputs.os, 'ppc64le')
+          || endsWith(inputs.os, 's390x'))
+        }}
+
+    - name: Set up Launchable
+      id: setup-launchable
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        set -x
+        pip install --user launchable
+        : # The build name cannot include a slash, so we replace the string here.
+        github_ref="${{ github.ref }}"
+        github_ref="${github_ref//\//_}"
+        : # With the --name option, we need to configure a unique identifier for this build.
+        : # To avoid setting the same build name as the CI which runs on other branches, we use the branch name here.
+        build_name="${github_ref}_${GITHUB_PR_HEAD_SHA}"
+        test_opts="${{ inputs.test-opts }}"
+        test_opts="${test_opts// /}"
+        test_opts="${test_opts//=/:}"
+        test_all_test_suite='test-all'
+        btest_test_suite='btest'
+        test_spec_test_suite='test-spec'
+        if [ "${{ inputs.is-yjit }}" = "true" ]; then
+          test_all_test_suite="yjit-${test_all_test_suite}"
+          btest_test_suite="yjit-${btest_test_suite}"
+          test_spec_test_suite="yjit-${test_spec_test_suite}"
+        fi
+        # launchable_setup target var -- refers ${target} prefixed variables
+        launchable_setup() {
+          local target=$1 session
+          eval [ "\${${target}_enabled}" = "true" ] || return
+          eval local suite=\${${target}_test_suite}
+          session=$(launchable record session \
+            --build "${build_name}" \
+            --observation \
+            --flavor os="${{ inputs.os }}" \
+            --flavor test_task="${{ inputs.test-task }}" \
+            --flavor test_opts="${test_opts}" \
+            --flavor workflow="${{ github.workflow }}" \
+            --test-suite ${suite} \
+            )
+          echo "${target}_session=${session}" >> $GITHUB_OUTPUT
+        }
+
+        launchable record build --name "${build_name}"
+        if launchable_setup test_all; then
+          echo "TESTS=${TESTS:+$TESTS }--launchable-test-reports=${test_all_report_file}" >> $GITHUB_ENV
+        fi
+        if launchable_setup btest; then
+          echo "BTESTS=${BTESTS:+$BTESTS }--launchable-test-reports=${btest_report_file}" >> $GITHUB_ENV
+        fi
+        if launchable_setup test_spec; then
+          echo "SPECOPTS=${SPECOPTS:$SPECOPTS }--launchable-test-reports=${test_spec_report_dir}" >> $GITHUB_ENV
+          echo test_spec_enabled=true >> $GITHUB_OUTPUT
+        fi
+
+        echo launchable_setup_dir=$(pwd) >> $GITHUB_OUTPUT
+      if: steps.enable-launchable.outputs.enable-launchable
+      env:
+        test_all_enabled: ${{ steps.global.outputs.test_all_enabled }}
+        btest_enabled: ${{ steps.global.outputs.btest_enabled }}
+        test_spec_enabled: ${{ steps.global.outputs.test_spec_enabled }}
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: make test-spec report directory in build directory
+      shell: bash
+      working-directory: ${{ inputs.builddir }}
+      run: mkdir "${test_spec_report_dir}"
+      if: ${{ steps.setup-launchable.outputs.test_spec_enabled == 'true' }}
+      env:
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: Clean up test results in Launchable
+      uses: gacts/run-and-post-run@674528335da98a7afc80915ff2b4b860a0b3553a # v1.4.0
+      with:
+        shell: bash
+        working-directory: ${{ inputs.builddir }}
+        post: |
+          rm -f "${test_all_report_file}"
+          rm -f "${btest_report_file}"
+          rm -fr "${test_spec_report_dir}"
+          rm -f launchable_stdout.log
+          rm -f launchable_stderr.log
+      if: always() && steps.setup-launchable.outcome == 'success'
+      env:
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+
+    - name: Record test results in Launchable
+      uses: gacts/run-and-post-run@674528335da98a7afc80915ff2b4b860a0b3553a # v1.4.0
+      with:
+        shell: bash
+        working-directory: ${{ inputs.builddir }}
+        post: |
+          if [[ "${test_all_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${test_all_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${test_all_session}" \
+              raw "${test_all_report_file}" || true; \
+          fi
+
+          if [[ "${btest_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${btest_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${btest_session}" \
+              raw "${btest_report_file}" || true; \
+          fi
+
+          if [[ "${test_spec_enabled}" = "true" ]]; then \
+            launchable record attachment \
+              --session "${test_spec_session}" \
+              "${stdout_report_path}" \
+              "${stderr_report_path}"; \
+            launchable record tests \
+              --session "${test_spec_session}" \
+              raw ${test_spec_report_dir}/* || true; \
+          fi
+      if: ${{ always() && steps.setup-launchable.outcome == 'success' }}
+      env:
+        test_all_report_file: ${{ steps.global.outputs.test_all_report_file }}
+        btest_report_file: ${{ steps.global.outputs.btest_report_file }}
+        test_spec_report_dir: ${{ steps.global.outputs.test_spec_report_dir }}
+        test_all_enabled: ${{ steps.global.outputs.test_all_enabled }}
+        btest_enabled: ${{ steps.global.outputs.btest_enabled }}
+        test_spec_enabled: ${{ steps.global.outputs.test_spec_enabled }}
+        test_all_session: ${{ steps.setup-launchable.outputs.test_all_session }}
+        btest_session: ${{ steps.setup-launchable.outputs.btest_session }}
+        test_spec_session: ${{ steps.setup-launchable.outputs.test_spec_session }}
+        stdout_report_path: ${{ steps.global.outputs.stdout_report_path }}
+        stderr_report_path: ${{ steps.global.outputs.stderr_report_path }}
+        LAUNCHABLE_SETUP_DIR: ${{ steps.setup-launchable.outputs.launchable_setup_dir }}
diff --git a/.github/actions/setup/directories/action.yml b/.github/actions/setup/directories/action.yml
new file mode 100644
index 0000000000..0e8ffd59ef
--- /dev/null
+++ b/.github/actions/setup/directories/action.yml
@@ -0,0 +1,194 @@
+name: Setup directories etc.
+description: >-
+  Set up the source code and build directories (plus some
+  environmental tweaks)
+
+inputs:
+  srcdir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Directory to (re-)checkout source codes.  This will be created
+      if absent.  If there is no `configure` file that is also
+      generated inside.
+
+  builddir:
+    required: false
+    default: ${{ github.workspace }}
+    description: >-
+      Where binaries and other generated contents go.  This will be
+      created if absent.
+
+  make-command:
+    required: false
+    type: string
+    default: 'make'
+    description: >-
+      The command of `make`.
+
+  makeup:
+    required: false
+    type: boolean
+    # Note that `default: false` evaluates to a string constant
+    # `'false'`, which is a truthy value :sigh:
+    # https://github.com/actions/runner/issues/2238
+    default: ''
+    description: >-
+      If set to true, additionally runs `make up`.
+
+  checkout:
+    required: false
+    type: boolean
+    default: true
+    description: >-
+      If set to '' (false), skip running actions/checkout. This is useful when
+      you don't want to overwrite a GitHub token that is already set up.
+
+  dummy-files:
+    required: false
+    type: boolean
+    default: ''
+    description: >-
+      If set to true, creates dummy files in build dir.
+
+  fetch-depth:
+    required: false
+    default: '1'
+    description: The depth of commit history fetched from the remote repository
+
+  clean:
+    required: false
+    type: boolean
+    default: ''
+    description: >-
+      If set to true, clean build directory.
+
+outputs: {} # nothing?
+
+runs:
+  using: composite
+
+  steps:
+    # Note that `shell: bash` works on both Windows and Linux, but not
+    # `shell: sh`.  This is because GitHub hosted Windows runners have
+    # their bash manually installed.
+    - shell: bash
+      run: |
+        mkdir -p ${{ inputs.srcdir }}
+        mkdir -p ${{ inputs.builddir }}
+
+    # Did you know that actions/checkout works without git(1)?  We are
+    # checking that here.
+    - id: which
+      shell: bash
+      run: |
+        echo "git=`command -v git`" >> "$GITHUB_OUTPUT"
+        echo "sudo=`sudo true && command -v sudo`" >> "$GITHUB_OUTPUT"
+        echo "autoreconf=`command -v autoreconf`" >> "$GITHUB_OUTPUT"
+
+    - if: steps.which.outputs.git
+      shell: bash
+      run: |
+        git config --global core.autocrlf false
+        git config --global core.eol lf
+        git config --global advice.detachedHead 0
+        git config --global init.defaultBranch garbage
+
+    - if: inputs.checkout
+      uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+      with:
+        path: ${{ inputs.srcdir }}
+        fetch-depth: ${{ inputs.fetch-depth }}
+
+    - uses: actions/cache@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+      with:
+        path: ${{ inputs.srcdir }}/.downloaded-cache
+        key: ${{ runner.os }}-${{ runner.arch }}-downloaded-cache
+
+    - if: steps.which.outputs.autoreconf
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: ./autogen.sh --install
+
+    # This is for MinGW.
+    - if: runner.os == 'Windows'
+      shell: bash
+      run: echo "GNUMAKEFLAGS=-j$((2 * NUMBER_OF_PROCESSORS))" >> $GITHUB_ENV
+
+    - if: runner.os == 'Linux'
+      shell: bash
+      run: echo "GNUMAKEFLAGS=-sj$((1 + $(nproc)))" >> "$GITHUB_ENV"
+
+    # macOS' GNU make is so old that they doesn't understand `GNUMAKEFLAGS`.
+    - if: runner.os == 'macOS'
+      shell: bash
+      run: echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> "$GITHUB_ENV"
+
+    - if: inputs.makeup
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        touch config.status .rbconfig.time
+        for mk in Makefile GNUmakefile; do
+          sed -f tool/prereq.status template/$mk.in > $mk
+        done
+        make up
+
+    # Cleanup, runs even on failure
+    - if: always() && inputs.makeup
+      shell: bash
+      working-directory: ${{ inputs.srcdir }}
+      run: |
+        rm -f config.status .rbconfig.time \
+          Makefile GNUmakefile uncommon.mk enc.mk noarch-fake.rb
+
+    - if: steps.which.outputs.sudo
+      shell: bash
+      run: |
+        sudo chmod -R go-w /usr/share
+        chmod -v go-w $HOME $HOME/.config || :
+        declare -a dirs # -A is not supported by old bash, e.g. macos
+        SAVE_IFS="$IFS" IFS=:; set $PATH
+        for d do
+          while [ -d "$d" ]; do
+            case "$IFS${dirs[*]}$IFS" in *"$IFS$d$IFS"*) ;; *) dirs+=("$d");; esac
+            d="${d%/*}"
+          done
+        done
+        IFS="$SAVE_IFS"
+        sudo chmod -v go-w "${dirs[@]}" || :
+
+    - if: inputs.dummy-files == 'true'
+      shell: bash
+      id: dummy-files
+      working-directory: ${{ inputs.builddir }}
+      run: |
+        : Create dummy files in build dir
+        set {{a..z},{A..Z},{0..9},foo,bar,test,zzz}.rb
+        for file; do \
+          echo > $file "raise 'do not load $file'"; \
+        done
+        # drop {a..z}.rb if case-insensitive filesystem
+        grep -F A.rb a.rb > /dev/null && set "${@:27}"
+        echo clean="cd ${{ inputs.builddir }} && rm $*" >> $GITHUB_OUTPUT
+
+    - if: inputs.clean == 'true'
+      shell: bash
+      id: clean
+      run: |
+        echo distclean='cd ${{ inputs.builddir }} && ${{ inputs.make-command }} distclean' >> $GITHUB_OUTPUT
+        echo remained-files='find ${{ inputs.builddir }} -ls' >> $GITHUB_OUTPUT
+        [ "${{ inputs.builddir }}" = "${{ inputs.srcdir }}" ] ||
+        echo final='rmdir ${{ inputs.builddir }}' >> $GITHUB_OUTPUT
+
+    - name: clean
+      uses: gacts/run-and-post-run@81b6ce503cde93862cec047c54652e45c5dca991 # v1.4.3
+      with:
+        working-directory:
+        post: |
+          ${{ steps.dummy-files.outputs.clean }}
+          ${{ steps.clean.outputs.distclean }}
+          ${{ steps.clean.outputs.remained-files }}
+          ${{ steps.clean.outputs.final }}
+      # rmdir randomly fails due to launchable files
+      continue-on-error: true
diff --git a/.github/actions/setup/macos/action.yml b/.github/actions/setup/macos/action.yml
new file mode 100644
index 0000000000..d0072ff828
--- /dev/null
+++ b/.github/actions/setup/macos/action.yml
@@ -0,0 +1,29 @@
+name: Setup macOS environment
+description: >-
+  Installs necessary packages via Homebrew.
+
+inputs: {} # nothing?
+
+outputs: {} # nothing?
+
+runs:
+  using: composite
+
+  steps:
+    - name: brew
+      shell: bash
+      run: |
+        brew install --quiet jemalloc gmp libffi openssl@3 zlib autoconf automake libtool
+
+    - name: Set ENV
+      shell: bash
+      run: |
+        dir_config() {
+          local args=() lib var="$1"; shift
+          for lib in "$@"; do
+            args+=("--with-${lib%@*}-dir=$(brew --prefix $lib)")
+          done
+          echo "$var=${args[*]}" >> $GITHUB_ENV
+        }
+        dir_config ruby_configure_args gmp
+        dir_config CONFIGURE_ARGS openssl@3
diff --git a/.github/actions/setup/ubuntu/action.yml b/.github/actions/setup/ubuntu/action.yml
new file mode 100644
index 0000000000..a9e5b41951
--- /dev/null
+++ b/.github/actions/setup/ubuntu/action.yml
@@ -0,0 +1,53 @@
+name: Setup ubuntu environment
+description: >-
+  At the beginning there was no way but to copy & paste `apt-get`
+  everywhere.  But now that we have composite actions, it seems better
+  merge them into one.
+
+inputs:
+  arch:
+    required: false
+    default: ''
+    description: >-
+      Architecture.  Because we run this on a GitHub-hosted runner
+      acceptable value for this input is very limited.
+
+outputs:
+  arch:
+    value: ${{ steps.uname.outputs.uname }}
+    description: >-
+      Actual architecture.  This could be different from the one
+      passed to the `inputs.arch`.  For instance giving `i386` to this
+      action yields `i686`.
+
+runs:
+  using: composite
+
+  steps:
+    - name: set SETARCH
+      shell: bash
+      run: echo "SETARCH=${setarch}" >> "$GITHUB_ENV"
+      env:
+        setarch: ${{ inputs.arch && format('setarch {0} --', inputs.arch) }}
+
+    - id: uname
+      name: uname
+      shell: bash
+      run: |
+        echo uname=`${SETARCH} uname -m` >> "$GITHUB_OUTPUT"
+        echo dpkg=`${SETARCH} uname -m | sed s/686/386/` >> "$GITHUB_OUTPUT"
+
+    - name: apt-get
+      shell: bash
+      env:
+        arch: ${{ inputs.arch && format(':{0}', steps.uname.outputs.dpkg) || '' }}
+      run: |
+        set -x
+        ${arch:+sudo dpkg --add-architecture ${arch#:}}
+        sudo apt-get update -qq || :
+        sudo apt-get install --no-install-recommends -qq -y -o=Dpkg::Use-Pty=0 \
+        ${arch:+cross}build-essential${arch/:/-} \
+        libssl-dev${arch} libyaml-dev${arch} libreadline6-dev${arch} \
+        zlib1g-dev${arch} libncurses5-dev${arch} libffi-dev${arch} \
+        autoconf ruby
+        sudo apt-get install -qq -y pkg-config${arch} || :
diff --git a/.github/actions/slack/action.yml b/.github/actions/slack/action.yml
new file mode 100644
index 0000000000..4a398da1d1
--- /dev/null
+++ b/.github/actions/slack/action.yml
@@ -0,0 +1,51 @@
+name: Post a message to slack
+description: >-
+  We have our ruby/action-slack webhook.  However its arguments are
+  bit verbose to be listed in every workflow files.  Better merge them
+  into one.
+
+inputs:
+  SLACK_WEBHOOK_URL:
+    required: true
+    description: >-
+      The URL to post the payload.  This is an input because it tends
+      to be stored in a secrets vault and a composite action cannot
+      look into one.
+
+  label:
+    required: false
+    description: >-
+      Human-readable description of the run, something like "DEBUG=1".
+      This need not be unique among runs.
+
+  event_name:
+    required: false
+    default: 'push'
+    description: >-
+      Target event to trigger notification. Notify only push by default.
+
+  extra_channel_id:
+    required: false
+    description: >-
+      Slack channel ID to notify besides #alerts and #alerts-emoji.
+
+outputs: {} # Nothing?
+
+runs:
+  using: composite
+
+  steps:
+    - uses: ruby/action-slack@54175162371f1f7c8eb94d7c8644ee2479fcd375 # v3.2.2
+      with:
+        payload: |
+          {
+            "ci": "GitHub Actions",
+            "env": "${{ github.workflow }}${{ inputs.label && format(' / {0}', inputs.label) }}",
+            "url": "https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+            "commit": "${{ github.sha }}",
+            "branch": "${{ github.ref_name }}"
+            ${{ inputs.extra_channel_id && format(', "extra_channel_id": "{0}"', inputs.extra_channel_id) }}
+          }
+      env:
+        SLACK_WEBHOOK_URL: ${{ inputs.SLACK_WEBHOOK_URL }}
+      if: ${{ github.event_name == inputs.event_name && startsWith(github.repository, 'ruby/') }}
diff --git a/.github/auto_request_review.yml b/.github/auto_request_review.yml
new file mode 100644
index 0000000000..38496d5ceb
--- /dev/null
+++ b/.github/auto_request_review.yml
@@ -0,0 +1,20 @@
+files:
+  'yjit*': [team:jit]
+  'yjit/**/*': [team:jit]
+  'yjit/src/cruby_bindings.inc.rs': []
+  'bootstraptest/test_yjit*': [team:jit]
+  'test/ruby/test_yjit*': [team:jit]
+  'zjit*': [team:jit]
+  'zjit/**/*': [team:jit]
+  'zjit/src/cruby_bindings.inc.rs': []
+  'test/ruby/test_zjit*': [team:jit]
+  'defs/jit.mk': [team:jit]
+  'tool/zjit_bisect.rb': [team:jit]
+  'doc/jit/*': [team:jit]
+  # Skip github workflow files because the team don't necessarily need to review dependabot updates for GitHub Actions. It's noisy in notifications, and they're auto-merged anyway.
+options:
+  ignore_draft: true
+  # This currently doesn't work as intended. We want to skip reviews when only
+  # cruby_bingings.inc.rs is modified, but this skips reviews even when other
+  # files are modified as well. To be enabled after fixing the behavior.
+  #last_files_match_only: true
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000000..2c2982d1d4
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,22 @@
+version: 2
+updates:
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'github-actions'
+    directory: '/.github/actions/slack'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'github-actions'
+    directory: '/.github/actions/setup/directories'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'cargo'
+    directory: '/yjit'
+    schedule:
+      interval: 'daily'
+  - package-ecosystem: 'vcpkg'
+    directory: '/'
+    schedule:
+      interval: 'daily'
diff --git a/.github/labeler.yml b/.github/labeler.yml
new file mode 100644
index 0000000000..e81aed8e98
--- /dev/null
+++ b/.github/labeler.yml
@@ -0,0 +1,6 @@
+Documentation:
+- changed-files:
+  - all-globs-to-all-files: doc/**
+
+Backport:
+- base-branch: 'ruby_3_\d'
diff --git a/.github/workflows/annocheck.yml b/.github/workflows/annocheck.yml
new file mode 100644
index 0000000000..899d601aef
--- /dev/null
+++ b/.github/workflows/annocheck.yml
@@ -0,0 +1,110 @@
+name: Annocheck
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  compile:
+    name: test-annocheck
+
+    runs-on: ubuntu-latest
+
+    container:
+      image: ghcr.io/ruby/ruby-ci-image:gcc-11
+      options: --user root
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    env:
+      CONFIGURE_TTY: never
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci rgengc
+      RUBY_TESTOPTS: >-
+        -q
+        --color=always
+        --tty=no
+      # FIXME: Drop skipping options
+      # https://bugs.ruby-lang.org/issues/18061
+      # https://sourceware.org/annobin/annobin.html/Test-pie.html
+      TEST_ANNOCHECK_OPTS: '--skip-pie --skip-gaps'
+
+    steps:
+      - run: id
+        working-directory:
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      # Minimal flags to pass the check.
+      # -g0 disables backtraces when SEGV.  Do not set that.
+      - name: Run configure
+        run: >
+          ../src/configure -C
+          --enable-debug-env
+          --disable-install-doc
+          --with-ext=-test-/cxxanyargs,+
+          --without-valgrind
+          --without-jemalloc
+          --without-gmp
+          --with-gcc="gcc-11 -fcf-protection -Wa,--generate-missing-build-notes=yes"
+          --enable-shared
+          debugflags=-ggdb3
+          optflags=-O2
+          LDFLAGS=-Wl,-z,now
+
+      - run: make showflags
+
+      - run: make
+
+      - run: make test-annocheck
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/auto_request_review.yml b/.github/workflows/auto_request_review.yml
new file mode 100644
index 0000000000..207315a084
--- /dev/null
+++ b/.github/workflows/auto_request_review.yml
@@ -0,0 +1,20 @@
+name: Auto Request Review
+on:
+  pull_request_target:
+    types: [opened, ready_for_review, reopened]
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  auto-request-review:
+    name: Auto Request Review
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' && github.base_ref == 'master' }}
+    steps:
+      - name: Request review based on files changes and/or groups the author belongs to
+        uses: necojackarc/auto-request-review@e89da1a8cd7c8c16d9de9c6e763290b6b0e3d424 # v0.13.0
+        with:
+          # scope: public_repo
+          token: ${{ secrets.MATZBOT_AUTO_REQUEST_REVIEW_TOKEN }}
diff --git a/.github/workflows/auto_review_pr.yml b/.github/workflows/auto_review_pr.yml
new file mode 100644
index 0000000000..ad0e63ba12
--- /dev/null
+++ b/.github/workflows/auto_review_pr.yml
@@ -0,0 +1,33 @@
+name: Auto Review PR
+on:
+  pull_request_target:
+    types: [opened, ready_for_review, reopened]
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  auto-review-pr:
+    name: Auto Review PR
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' && github.base_ref == 'master' }}
+
+    permissions:
+      pull-requests: write
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6.0.1
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.4'
+          bundler: none
+
+      - name: Auto Review PR
+        run: ruby tool/auto_review_pr.rb "$GITHUB_PR_NUMBER"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_PR_NUMBER: ${{ github.event.pull_request.number }}
diff --git a/.github/workflows/baseruby.yml b/.github/workflows/baseruby.yml
new file mode 100644
index 0000000000..d3e734f885
--- /dev/null
+++ b/.github/workflows/baseruby.yml
@@ -0,0 +1,74 @@
+name: BASERUBY Check
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  baseruby:
+    name: BASERUBY
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    strategy:
+      matrix:
+        ruby:
+          - ruby-3.1
+          - ruby-3.2
+          - ruby-3.3
+
+    steps:
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler: none
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+
+      - run: ./configure --disable-install-doc
+
+      - run: make all
+
+      - run: make test
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.ruby }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/bundled_gems.yml b/.github/workflows/bundled_gems.yml
new file mode 100644
index 0000000000..59f64e8312
--- /dev/null
+++ b/.github/workflows/bundled_gems.yml
@@ -0,0 +1,190 @@
+name: bundled_gems
+
+env:
+  UPDATE_ENABLED: true
+
+on:
+  push:
+    branches: ['master']
+    paths:
+      - '.github/workflows/bundled_gems.yml'
+      - 'gems/bundled_gems'
+  pull_request:
+    branches: ['master']
+    paths:
+      - '.github/workflows/bundled_gems.yml'
+      - 'gems/bundled_gems'
+  merge_group:
+  schedule:
+    - cron: '45 6 * * *'
+  workflow_dispatch:
+
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
+
+jobs:
+  update:
+    permissions:
+      contents: write # for Git to git push
+
+    if: ${{ github.event_name != 'schedule' || github.repository == 'ruby/ruby' }}
+
+    name: update ${{ github.workflow }}
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
+
+      - name: Set ENV
+        run: |
+          echo "TODAY=$(date +%F)" >> $GITHUB_ENV
+
+      - name: Download previous gems list
+        run: |
+          mkdir -p .downloaded-cache
+          for data in bundled_gems.json default_gems.json; do
+            ln -s .downloaded-cache/$data .
+            curl -O -R -z ./$data https://stdgems.org/$data
+          done
+
+      - name: Update bundled gems list
+        id: bundled_gems
+        run: |
+          ruby -i~ tool/update-bundled_gems.rb gems/bundled_gems >> $GITHUB_OUTPUT
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
+
+      - name: Update spec/bundler/support/builders.rb
+        run: |
+          #!ruby
+          rake_version = File.read("gems/bundled_gems")[/^rake\s+(\S+)/, 1]
+          print ARGF.read.sub(/^ *def rake_version\s*\K".*?"/) {rake_version.dump}
+        shell: ruby -i~ {0} spec/bundler/support/builders.rb
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
+
+      - name: Maintain updated gems list in NEWS
+        run: |
+          ruby tool/update-NEWS-gemlist.rb bundled
+        if: ${{ env.UPDATE_ENABLED == 'true' }}
+
+      - name: Check diffs
+        id: diff
+        run: |
+          news= gems=
+          git diff --color --no-ext-diff --ignore-submodules --exit-code -- NEWS.md ||
+          news=true
+          git diff --color --no-ext-diff --ignore-submodules --exit-code -- gems/bundled_gems ||
+          gems=true
+          git add -- NEWS.md gems/bundled_gems
+          git add -- spec/bundler/support/builders.rb
+          echo news=$news >> $GITHUB_OUTPUT
+          echo gems=$gems >> $GITHUB_OUTPUT
+          echo update=${news:-$gems} >> $GITHUB_OUTPUT
+
+      - name: Commit
+        id: commit
+        run: |
+          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
+          message="Update bundled gems list"
+          if [ -z "${gems}" ]; then
+            git commit --message="[DOC] ${message} at ${GITHUB_SHA:0:30}"
+          else
+            git commit --message="${message} as of ${TODAY}"
+          fi
+        env:
+          TODAY: ${{ steps.bundled_gems.outputs.latest_date || env.TODAY }}
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          gems: ${{ steps.diff.outputs.gems }}
+        if: ${{ steps.diff.outputs.update }}
+
+      - name: Development revision of bundled gems
+        run: |
+          #!ruby
+          file = "gems/bundled_gems"
+
+          SECONDS_IN_DAY = 86400
+          today = Time.new("#{ENV['TODAY']}Z")
+          if !(december = today.month == 12)
+            days = 30
+          elsif (days = 26 - today.day).positive?
+            days += 4
+          else
+            puts "::info:: just after released"
+            exit
+          end
+
+          since = "#{today.year-1}-12-26"
+          ref = ENV['GITHUB_REF']
+          puts "::group::\e[94mfetching \e[1m#{file}\e[22m since \e[1m#{since}\e[22m from \e[1m#{ref}\e[m"
+          system(*%W[git fetch --shallow-since=#{since} --no-tags origin #{ref}], exception: true)
+          puts "::endgroup::"
+
+          puts "\e[94mchecking development version bundled gems older than \e[1m#{days}\e[22m days\e[m"
+          limit = today.to_i - days * SECONDS_IN_DAY
+          old = 0
+          IO.popen(%W"git blame --line-porcelain -- #{file}") do |blame|
+            while head = blame.gets("\n\t") and s = blame.gets
+              next unless (gem = s.split(/\s+|#.*/)).size > 3
+              time = head[/^committer-time \K\d+/].to_i
+              next if (d = limit - time) <= 0
+              d /= SECONDS_IN_DAY
+              line = head[/\A\h+ \d+ \K\d+/].to_i
+              level = if d < days; 'warning'; else old += 1; 'error'; end
+              d += days
+              puts "::#{level} file=#{file},line=#{line},title=Older than #{d} days::#{gem[0]} #{gem[3]}"
+            end
+          end
+          abort "::error title=Too long-standing gems::The release comes soon." if december and old.nonzero?
+        shell: ruby {0}
+        env:
+          file: ${{ steps.logs.outputs.file }}
+          days: ${{ steps.logs.outputs.days }}
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/ubuntu
+        if: ${{ steps.diff.outputs.gems }}
+
+      - name: Build
+        run: |
+          ./autogen.sh
+          ./configure -C --disable-install-doc
+          make
+        if: ${{ steps.diff.outputs.gems }}
+
+      - name: Prepare bundled gems
+        run: |
+          make -s prepare-gems
+        if: ${{ steps.diff.outputs.gems }}
+
+      - name: Test bundled gems
+        run: |
+          make -s test-bundled-gems
+        timeout-minutes: 30
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+        if: ${{ steps.diff.outputs.gems }}
+
+      - name: Push
+        run: |
+          git push origin ${GITHUB_REF#refs/heads/}
+        if: >-
+          ${{
+          github.repository == 'ruby/ruby' &&
+          !startsWith(github.event_name, 'pull') &&
+          steps.commit.outcome == 'success'
+          }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/check_dependencies.yml b/.github/workflows/check_dependencies.yml
new file mode 100644
index 0000000000..c5dec65e48
--- /dev/null
+++ b/.github/workflows/check_dependencies.yml
@@ -0,0 +1,59 @@
+name: Check Dependencies
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  update-deps:
+    name: Dependency checks
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+      fail-fast: true
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+        if: ${{ contains(matrix.os, 'ubuntu') }}
+
+      - uses: ./.github/actions/setup/macos
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - uses: ./.github/actions/setup/directories
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - name: Run configure
+        run: ./configure -C --disable-install-doc --disable-rubygems --with-gcc 'optflags=-O0' 'debugflags=-save-temps=obj -g'
+
+      - run: make fix-depends
+
+      - run: git diff --no-ext-diff --ignore-submodules --exit-code
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.os }} / Dependencies need to update
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/check_misc.yml b/.github/workflows/check_misc.yml
new file mode 100644
index 0000000000..2a2bd1df53
--- /dev/null
+++ b/.github/workflows/check_misc.yml
@@ -0,0 +1,127 @@
+name: Misc
+on: [push, pull_request, merge_group]
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  checks:
+    name: Miscellaneous checks
+
+    permissions:
+      contents: write # for Git to git push
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
+
+      - name: Check for code styles
+        run: |
+          set -x
+          ruby tool/auto-style.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA"
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.pull_request.base.sha }}
+          GITHUB_NEW_SHA: ${{ github.event.pull_request.merge_commit_sha }}
+        # Skip 'push' events because post_push.yml fixes them on push
+        if: ${{ github.repository == 'ruby/ruby' && startsWith(github.event_name, 'pull') }}
+
+      - name: Check for bash specific substitution in configure.ac
+        run: |
+          git grep -n '\${[A-Za-z_0-9]*/' -- configure.ac && exit 1 || :
+
+      - name: Check for header macros
+        run: |
+          fail=
+          for header in ruby/*.h; do
+            git grep -l -F -e $header -e HAVE_`echo $header | tr a-z./ A-Z__` -- . > /dev/null && continue
+            fail=1
+            echo $header
+          done
+          exit $fail
+        working-directory: include
+
+      - id: now
+        run: |
+          date +"mon=%-m"%n"day=%-d" >> $GITHUB_OUTPUT
+        env:
+          TZ: Tokyo/Asia
+
+      - id: deprecation
+        run: |
+          eval $(sed -n 's/^#define RUBY_API_VERSION_\(MAJOR\|MINOR\) /\1=/p' include/ruby/version.h)
+          if git --no-pager grep --color -o 'rb_warn_deprecated_to_remove_at('$MAJOR'\.'$MINOR',.*' -- '*.c' >&2; then
+              false
+          else
+              true
+          fi
+        continue-on-error: ${{ steps.now.outputs.mon < 12 }}
+
+      - name: Check if to generate documents
+        id: rdoc
+        run: |
+          set -- $(sed 's/#.*//;/^rdoc /!d' gems/bundled_gems)
+          { echo version=$2; echo ref=$4; } >> $GITHUB_OUTPUT
+          echo RDOC='ruby -W0 --disable-gems tool/rdoc-srcdir -q' >> $GITHUB_ENV
+
+      - name: Checkout rdoc
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/rdoc
+          ref: ${{ steps.rdoc.outputs.ref }}
+          path: .bundle/gems/rdoc-${{ steps.rdoc.outputs.version }}
+        if: ${{ steps.rdoc.outputs.ref != '' }}
+
+      - name: Generate rdoc
+        run: |
+          set -x
+          gempath=$(ruby -e 'print Gem.user_dir, "/bin"')
+          PATH=$gempath:$PATH
+          gem install --user bundler
+          bundle config --local path vendor/bundle
+          bundle install --jobs 4
+          bundle exec rake generate
+        working-directory: .bundle/gems/rdoc-${{ steps.rdoc.outputs.version }}
+        if: ${{ steps.rdoc.outputs.ref != '' }}
+
+      - name: Core docs coverage
+        run: |
+          $RDOC -C -x ^ext -x ^lib .
+
+      - name: Generate docs
+        id: docs
+        run: |
+          $RDOC --op html .
+          echo htmlout=ruby-html-${GITHUB_SHA:0:10} >> $GITHUB_OUTPUT
+        # Generate only when document commit/PR
+        if: >-
+          ${{false
+          || contains(github.event.head_commit.message, '[ruby/rdoc]')
+          || contains(github.event.head_commit.message, '[DOC]')
+          || contains(github.event.pull_request.title, '[DOC]')
+          || contains(github.event.pull_request.labels.*.name, 'Documentation')
+          }}
+
+      - name: Upload docs
+        uses: actions/upload-artifact@v6.0.0
+        with:
+          path: html
+          name: ${{ steps.docs.outputs.htmlout }}
+        if: ${{ steps.docs.outcome == 'success' }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
new file mode 100644
index 0000000000..a92c93b476
--- /dev/null
+++ b/.github/workflows/codeql-analysis.yml
@@ -0,0 +1,121 @@
+name: 'CodeQL'
+
+on:
+  push:
+    branches: ['master']
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  schedule:
+    - cron: '0 12 * * *'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read # for github/codeql-action/init to get workflow details
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/autobuild to send a status report
+    # CodeQL fails to run pull requests from dependabot due to missing write access to upload results.
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    env:
+      enable_install_doc: no
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - language: cpp
+          - language: ruby
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Install libraries
+        if: ${{ contains(matrix.os, 'macos') }}
+        uses: ./.github/actions/setup/macos
+
+      - name: Install libraries
+        if : ${{ matrix.os == 'ubuntu-latest' }}
+        uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+
+      - name: Remove an obsolete rubygems vendored file
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        run: sudo rm /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          languages: ${{ matrix.language }}
+          trap-caching: false
+          debug: true
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          category: '/language:${{ matrix.language }}'
+          upload: False
+          output: sarif-results
+
+      - name: filter-sarif
+        uses: advanced-security/filter-sarif@f3b8118a9349d88f7b1c0c488476411145b6270d # v1.0.1
+        with:
+          patterns: |
+            +**/*.rb
+            -lib/uri/mailto.rb:rb/overly-large-range
+            -lib/uri/rfc3986_parser.rb:rb/overly-large-range
+            -lib/bundler/vendor/uri/lib/uri/mailto.rb:rb/overly-large-range
+            -lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb:rb/overly-large-range
+            -test/ruby/test_io.rb:rb/non-constant-kernel-open
+            -test/open-uri/test_open-uri.rb:rb/non-constant-kernel-open
+            -test/open-uri/test_ssl.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/binread_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/readlines_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/foreach_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/write_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/io/read_spec.rb:rb/non-constant-kernel-open
+            -spec/ruby/core/kernel/open_spec.rb:rb/non-constant-kernel-open
+          input: sarif-results/${{ matrix.language }}.sarif
+          output: sarif-results/${{ matrix.language }}.sarif
+        if: ${{ matrix.language == 'ruby' }}
+        continue-on-error: true
+
+      - name: Upload SARIF
+        uses: github/codeql-action/upload-sarif@e296a935590eb16afc0c0108289f68c87e2a89a5 # v4.30.7
+        with:
+          sarif_file: sarif-results/${{ matrix.language }}.sarif
+        continue-on-error: true
diff --git a/.github/workflows/compilers.yml b/.github/workflows/compilers.yml
new file mode 100644
index 0000000000..8c0ca54e0b
--- /dev/null
+++ b/.github/workflows/compilers.yml
@@ -0,0 +1,335 @@
+# Some tests depending on this name 'Compilations' via $GITHUB_WORKFLOW. Make sure to update such tests when renaming this workflow.
+name: Compilations
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+# Each job is split so that they roughly take 30min to run through.
+jobs:
+  compile-if:
+    name: 'omnibus compilations, trigger'
+    runs-on: ubuntu-latest
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+    steps:
+      - run: true
+        working-directory:
+
+  compile1:
+    name: 'omnibus compilations, #1'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      # Set fetch-depth: 10 so that Launchable can receive commits information.
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - name: 'clang 18 LTO'
+        uses: './.github/actions/compilers'
+        with:
+          tag: clang-18
+          with_gcc: 'clang-18 -flto=auto'
+          optflags: '-O2'
+          enable_shared: false
+        timeout-minutes: 30
+      - { uses: './.github/actions/compilers', name: '-O0', with: { optflags: '-O0 -march=x86-64 -mtune=generic' }, timeout-minutes: 5 }
+      # - { uses: './.github/actions/compilers', name: '-O3', with: { optflags: '-O3 -march=x86-64 -mtune=generic', check: true } }
+
+  compile2:
+    name: 'omnibus compilations, #2'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - name: 'GCC 15 LTO'
+        uses: './.github/actions/compilers'
+        with:
+          tag: gcc-15
+          with_gcc: 'gcc-15 -flto=auto -ffat-lto-objects -Werror=lto-type-mismatch'
+          optflags: '-O2'
+          enable_shared: false
+        timeout-minutes: 10
+      - { uses: './.github/actions/compilers', name: 'ext/Setup', with: { static_exts: 'etc json/* */escape' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 15', with: { tag: 'gcc-15' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 14', with: { tag: 'gcc-14' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 13', with: { tag: 'gcc-13' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 12', with: { tag: 'gcc-12' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 11', with: { tag: 'gcc-11' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 10', with: { tag: 'gcc-10' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 9',  with: { tag: 'gcc-9'  }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 8',  with: { tag: 'gcc-8'  }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GCC 7',  with: { tag: 'gcc-7'  }, timeout-minutes: 5 }
+
+  compile3:
+    name: 'omnibus compilations, #3'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'clang 22', with: { tag: 'clang-22' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 21', with: { tag: 'clang-21' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 20', with: { tag: 'clang-20' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 19', with: { tag: 'clang-19' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 18', with: { tag: 'clang-18' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 17', with: { tag: 'clang-17' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 16', with: { tag: 'clang-16' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 15', with: { tag: 'clang-15' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 14', with: { tag: 'clang-14' }, timeout-minutes: 5 }
+
+  compile4:
+    name: 'omnibus compilations, #4'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'clang 13', with: { tag: 'clang-13' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 12', with: { tag: 'clang-12' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 11', with: { tag: 'clang-11' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 10', with: { tag: 'clang-10' }, timeout-minutes: 5 }
+        # llvm-objcopy<=9 doesn't have --wildcard. It compiles, but leaves Rust symbols in libyjit.o and fail `make test-leaked-globals`.
+      - { uses: './.github/actions/compilers', name: 'clang 9',  with: { tag: 'clang-9',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 8',  with: { tag: 'clang-8',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 7',  with: { tag: 'clang-7',   append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'clang 6',  with: { tag: 'clang-6.0', append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+
+  compile5:
+    name: 'omnibus compilations, #5'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      # -Wno-strict-prototypes is necessary with current clang-15 since
+      # older autoconf generate functions without prototype and -pedantic
+      # now implies strict-prototypes. Disabling the error but leaving the
+      # warning generates a lot of noise from use of ANYARGS in
+      # rb_define_method() and friends.
+      # See: https://github.com/llvm/llvm-project/commit/11da1b53d8cd3507959022cd790d5a7ad4573d94
+      - { uses: './.github/actions/compilers', name: 'C99',      with: { CFLAGS: '-std=c99 -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C11',   with: { CFLAGS:   '-std=c11   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C17',   with: { CFLAGS:   '-std=c17   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C23',   with: { CFLAGS:   '-std=c2x   -Werror=pedantic -pedantic-errors -Wno-strict-prototypes' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++98', with: { CXXFLAGS: '-std=c++98 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++11', with: { CXXFLAGS: '-std=c++11 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++14', with: { CXXFLAGS: '-std=c++14 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++17', with: { CXXFLAGS: '-std=c++17 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+
+  compile6:
+    name: 'omnibus compilations, #6'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'C++20', with: { CXXFLAGS: '-std=c++20 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++23', with: { CXXFLAGS: '-std=c++23 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'C++26', with: { CXXFLAGS: '-std=c++26 -Werror=pedantic -pedantic-errors -Wno-c++11-long-long' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'gmp',                 with: { append_configure: '--with-gmp', test_all: 'ruby/test_bignum.rb', test_spec: "/github/workspace/src/spec/ruby/core/integer" }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'jemalloc',            with: { append_configure: '--with-jemalloc' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'valgrind',            with: { append_configure: '--with-valgrind' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'coroutine=ucontext',  with: { append_configure: '--with-coroutine=ucontext' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'coroutine=pthread',   with: { append_configure: '--with-coroutine=pthread' }, timeout-minutes: 5 }
+
+  compile7:
+    name: 'omnibus compilations, #7'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'disable-jit',         with: { append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-yjit',        with: { append_configure: '--disable-yjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-zjit',        with: { append_configure: '--disable-zjit' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-dln',         with: { append_configure: '--disable-dln' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'enable-mkmf-verbose', with: { append_configure: '--enable-mkmf-verbose' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'disable-rubygems',    with: { append_configure: '--disable-rubygems' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RUBY_DEVEL',          with: { append_configure: '--enable-devel' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=0',            with: { cppflags: '-DOPT_THREADED_CODE=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=1',            with: { cppflags: '-DOPT_THREADED_CODE=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'OPT_THREADED_CODE=2',            with: { cppflags: '-DOPT_THREADED_CODE=2' }, timeout-minutes: 5 }
+
+  compile8:
+    name: 'omnibus compilations, #8'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'NDEBUG',                         with: { cppflags: '-DNDEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RUBY_DEBUG',                     with: { cppflags: '-DRUBY_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ARRAY_DEBUG',                    with: { cppflags: '-DARRAY_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'BIGNUM_DEBUG',                   with: { cppflags: '-DBIGNUM_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'CCAN_LIST_DEBUG',                with: { cppflags: '-DCCAN_LIST_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'CPDEBUG=-1',                     with: { cppflags: '-DCPDEBUG=-1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ENC_DEBUG',                      with: { cppflags: '-DENC_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_DEBUG',                       with: { cppflags: '-DGC_DEBUG' }, timeout-minutes: 5 }
+
+  compile9:
+    name: 'omnibus compilations, #9'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'HASH_DEBUG',                     with: { cppflags: '-DHASH_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'ID_TABLE_DEBUG',                 with: { cppflags: '-DID_TABLE_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_DEBUG=-1',                with: { cppflags: '-DRGENGC_DEBUG=-1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'SYMBOL_DEBUG',                   with: { cppflags: '-DSYMBOL_DEBUG' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_CHECK_MODE',              with: { cppflags: '-DRGENGC_CHECK_MODE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'VM_CHECK_MODE',                  with: { cppflags: '-DVM_CHECK_MODE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_EMBED_CI=0',                 with: { cppflags: '-DUSE_EMBED_CI=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_FLONUM=0',                   with: { cppflags: '-DUSE_FLONUM=0', append_configure: '--disable-yjit --disable-zjit' }, timeout-minutes: 5 }
+
+  compileX:
+    name: 'omnibus compilations, #10'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'USE_LAZY_LOAD',                  with: { cppflags: '-DUSE_LAZY_LOAD' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_SYMBOL_GC=0',                with: { cppflags: '-DUSE_SYMBOL_GC=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_THREAD_CACHE=0',             with: { cppflags: '-DUSE_THREAD_CACHE=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_RUBY_DEBUG_LOG=1',           with: { cppflags: '-DUSE_RUBY_DEBUG_LOG=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'USE_DEBUG_COUNTER',              with: { cppflags: '-DUSE_DEBUG_COUNTER=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'SHARABLE_MIDDLE_SUBSTRING',      with: { cppflags: '-DSHARABLE_MIDDLE_SUBSTRING=1' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'DEBUG_FIND_TIME_NUMGUESS',       with: { cppflags: '-DDEBUG_FIND_TIME_NUMGUESS' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'DEBUG_INTEGER_PACK',             with: { cppflags: '-DDEBUG_INTEGER_PACK' }, timeout-minutes: 5 }
+
+  compileB:
+    name: 'omnibus compilations, #11'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'GC_DEBUG_STRESS_TO_CLASS',       with: { cppflags: '-DGC_DEBUG_STRESS_TO_CLASS' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_ENABLE_LAZY_SWEEP=0',         with: { cppflags: '-DGC_ENABLE_LAZY_SWEEP=0' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_PROFILE_DETAIL_MEMORY',       with: { cppflags: '-DGC_PROFILE_DETAIL_MEMORY' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'GC_PROFILE_MORE_DETAIL',         with: { cppflags: '-DGC_PROFILE_MORE_DETAIL' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'MALLOC_ALLOCATED_SIZE_CHECK',    with: { cppflags: '-DMALLOC_ALLOCATED_SIZE_CHECK' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_ESTIMATE_OLDMALLOC',      with: { cppflags: '-DRGENGC_ESTIMATE_OLDMALLOC' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'RGENGC_PROFILE',                 with: { cppflags: '-DRGENGC_PROFILE' }, timeout-minutes: 5 }
+
+  compileC:
+    name: 'omnibus compilations, #12'
+    runs-on: ubuntu-latest
+    needs: compile-if
+    if: ${{ needs.compile-if.result == 'success' }}
+    timeout-minutes: 60
+    services: { docuum: { image: 'stephanmisc/docuum', options: '--init', volumes: [ '/root', '/var/run/docker.sock:/var/run/docker.sock' ] } }
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - { uses: './.github/actions/setup/directories', with: { srcdir: 'src', builddir: 'build', makeup: true, fetch-depth: 10 } }
+      - { uses: './.github/actions/compilers', name: 'VM_DEBUG_BP_CHECK',              with: { cppflags: '-DVM_DEBUG_BP_CHECK' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'VM_DEBUG_VERIFY_METHOD_CACHE',   with: { cppflags: '-DVM_DEBUG_VERIFY_METHOD_CACHE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'YJIT_FORCE_ENABLE',              with: { cppflags: '-DYJIT_FORCE_ENABLE' }, timeout-minutes: 5 }
+      - { uses: './.github/actions/compilers', name: 'UNIVERSAL_PARSER',               with: { cppflags: '-DUNIVERSAL_PARSER' }, timeout-minutes: 5 }
+
+  compilemax:
+    name: 'omnibus compilations, result'
+    runs-on: ubuntu-latest
+    if: ${{ always() }}
+    needs:
+      - 'compile1'
+      - 'compile2'
+      - 'compile3'
+      - 'compile4'
+      - 'compile5'
+      - 'compile6'
+      - 'compile7'
+      - 'compile8'
+      - 'compile9'
+      - 'compileX'
+      - 'compileB'
+      - 'compileC'
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with: { sparse-checkout-cone-mode: false, sparse-checkout: /.github }
+      - uses: ./.github/actions/slack
+        with:
+          label: 'omnibus'
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+      - run: false
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/cygwin.yml b/.github/workflows/cygwin.yml
new file mode 100644
index 0000000000..ac73991fe8
--- /dev/null
+++ b/.github/workflows/cygwin.yml
@@ -0,0 +1,71 @@
+name: Cygwin
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    runs-on: windows-2022
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - run: git config --global core.autocrlf input
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Setup Cygwin
+        uses: cygwin/cygwin-install-action@master
+        with:
+          packages: ruby gcc-core make autoconf libtool libssl-devel libyaml-devel libffi-devel zlib-devel rubygems
+
+      - name: configure
+        run: |
+          ./autogen.sh
+          ./configure --disable-install-doc
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - name: Extract bundled gems
+        run: |
+          make ruby -j5
+          make extract-gems
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - name: make all
+        timeout-minutes: 30
+        run: make -j4 V=1
+        shell: C:\cygwin\bin\bash.EXE --noprofile --norc -e -o igncr -o pipefail {0}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: Cygwin
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/default_gems_list.yml b/.github/workflows/default_gems_list.yml
new file mode 100644
index 0000000000..1c7e2195c8
--- /dev/null
+++ b/.github/workflows/default_gems_list.yml
@@ -0,0 +1,99 @@
+name: Update default gems list
+on: [push, pull_request, merge_group]
+
+env:
+  UPDATE_NEWS_ENABLED: true
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  update_default_gems_list:
+    name: Update default gems list
+
+    permissions:
+      contents: write # for Git to git push
+
+    runs-on: ubuntu-latest
+
+    if: ${{ github.repository == 'ruby/ruby' }}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          token: ${{ (github.repository == 'ruby/ruby' && !startsWith(github.event_name, 'pull')) && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - id: gems
+        run: true
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          makeup: true
+          # Skip overwriting MATZBOT_AUTO_UPDATE_TOKEN
+          checkout: '' # false (ref: https://github.com/actions/runner/issues/2238)
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Download previous gems list
+        run: |
+          data=default_gems.json
+          mkdir -p .downloaded-cache
+          ln -s .downloaded-cache/$data .
+          curl -O -R -z ./$data https://stdgems.org/$data
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Make default gems list
+        run: |
+          #!ruby
+          require 'rubygems'
+          $:.unshift "lib"
+          rgver = File.foreach("lib/rubygems.rb") do |line|
+            break $1 if /^\s*VERSION\s*=\s*"([^"]+)"/ =~ line
+          end
+          gems = Dir.glob("{ext,lib}/**/*.gemspec").map do |f|
+            spec = Gem::Specification.load(f)
+            "#{spec.name} #{spec.version}"
+          end.sort
+          File.open("gems/default_gems", "w") do |f|
+            f.puts "RubyGems #{rgver}"
+            f.puts gems
+          end
+        shell: ruby --disable=gems {0}
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Maintain updated gems list in NEWS
+        run: |
+          ruby tool/update-NEWS-gemlist.rb default
+        if: ${{ steps.gems.outcome == 'success' && env.UPDATE_NEWS_ENABLED == 'true' }}
+
+      - name: Check diffs
+        id: diff
+        run: |
+          git diff --color --no-ext-diff --ignore-submodules --exit-code NEWS.md ||
+          echo update=true >> $GITHUB_OUTPUT
+        if: ${{ steps.gems.outcome == 'success' }}
+
+      - name: Commit
+        run: |
+          git pull --ff-only origin ${GITHUB_REF#refs/heads/}
+          git commit --message="Update default gems list at ${GITHUB_SHA:0:30} [ci skip]" NEWS.md
+          git push origin ${GITHUB_REF#refs/heads/}
+        env:
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+        if: >-
+          ${{
+          github.repository == 'ruby/ruby' &&
+          !startsWith(github.event_name, 'pull') &&
+          steps.diff.outputs.update
+          }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/dependabot_automerge.yml b/.github/workflows/dependabot_automerge.yml
new file mode 100644
index 0000000000..a95c7005c4
--- /dev/null
+++ b/.github/workflows/dependabot_automerge.yml
@@ -0,0 +1,32 @@
+# from https://github.com/gofiber/swagger/blob/main/.github/workflows/dependabot_automerge.yml
+name: Dependabot auto-merge
+on:
+  pull_request:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'ruby/ruby'
+    steps:
+      - name: Dependabot metadata
+        uses: dependabot/fetch-metadata@21025c705c08248db411dc16f3619e6b5f9ea21a # v2.5.0
+        id: metadata
+
+      - name: Wait for status checks
+        uses: lewagon/wait-on-check-action@3603e826ee561ea102b58accb5ea55a1a7482343 # v1.4.1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          check-regexp: 'make \(check, .*\)'
+          wait-interval: 30
+
+      - name: Auto-merge for Dependabot PRs
+        if: ${{ steps.metadata.outputs.update-type == 'version-update:semver-minor' || steps.metadata.outputs.update-type == 'version-update:semver-patch' }}
+        run: gh pr merge --auto --rebase "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.MATZBOT_DEPENDABOT_MERGE_TOKEN }}
diff --git a/.github/workflows/labeler.yml b/.github/workflows/labeler.yml
new file mode 100644
index 0000000000..16dbac1afa
--- /dev/null
+++ b/.github/workflows/labeler.yml
@@ -0,0 +1,12 @@
+name: "Pull Request Labeler"
+on:
+- pull_request_target
+
+jobs:
+  labeler:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/labeler@v6
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
new file mode 100644
index 0000000000..29adcab39a
--- /dev/null
+++ b/.github/workflows/macos.yml
@@ -0,0 +1,202 @@
+name: macOS
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        include:
+          - test_task: check
+            os: macos-14
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-gcc=gcc-14'
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-jemalloc --with-opt-dir=$(brew --prefix jemalloc)'
+          - test_task: check
+            os: macos-14
+            configure_args: '--with-gmp'
+          - test_task: test-all
+            test_opts: --repeat-count=2
+            os: macos-14
+          - test_task: test-bundler-parallel
+            os: macos-14
+          - test_task: test-bundled-gems
+            os: macos-14
+          - test_task: check
+            os: macos-15
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
+    runs-on: ${{ matrix.os }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 0 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: make sure that kern.coredump=1
+        run: |
+          sysctl -n kern.coredump
+          sudo sysctl -w kern.coredump=1
+          sudo chmod -R +rwx /cores/
+
+      - name: Delete unused SDKs
+        # To free up disk space to not run out during the run
+        run: |
+          sudo rm -rf ~/.dotnet
+          sudo rm -rf /Library/Android
+          sudo rm -rf /Library/Developer/CoreSimulator
+        continue-on-error: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc ${ruby_configure_args} ${{ matrix.configure_args }}
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - run: make hello
+
+      - name: runirb
+        run: |
+          echo IRB::VERSION | make runirb RUNOPT="-- -f"
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os }}
+          test-opts: ${{ matrix.test_opts }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: Set extra test options
+        run: |
+          echo "TESTS=$TESTS ${{ matrix.test_opts }}" >> $GITHUB_ENV
+          echo "RUBY_TEST_TIMEOUT_SCALE=10" >> $GITHUB_ENV # With --repeat-count=2, flaky test by timeout occurs frequently for some reason
+        if: matrix.test_opts
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          ulimit -c unlimited
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"}
+        timeout-minutes: 90
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
+      - name: make skipped tests
+        run: |
+          make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - name: CAPI extensions
+        uses: ./.github/actions/capiext
+        with:
+          builddir: build
+        env:
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ contains(matrix.extra_checks, 'capi') }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.os }} / ${{ matrix.test_task }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+      - name: Resolve job ID
+        id: job_id
+        uses: actions/github-script@main
+        env:
+          matrix: ${{ toJson(matrix) }}
+        with:
+          script: |
+            const { data: workflow_run } = await github.rest.actions.listJobsForWorkflowRun({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              run_id: context.runId
+            });
+            const matrix = JSON.parse(process.env.matrix);
+            const job_name = `${context.job}${matrix ? ` (${Object.values(matrix).join(", ")})` : ""}`;
+            return workflow_run.jobs.find((job) => job.name === job_name).id;
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/mingw.yml b/.github/workflows/mingw.yml
new file mode 100644
index 0000000000..5c639ad48b
--- /dev/null
+++ b/.github/workflows/mingw.yml
@@ -0,0 +1,243 @@
+name: MinGW
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+# Notes:
+# Actions console encoding causes issues, see test-all & test-spec steps
+#
+jobs:
+  make:
+    runs-on: windows-${{ matrix.os }}
+
+    name: ${{ github.workflow }} (${{ matrix.msystem }})
+
+    env:
+      MSYSTEM: ${{ matrix.msystem }}
+      MSYS2_ARCH: >-
+        ${{
+        contains(matrix.msystem, 'arm64') && 'aarch64' ||
+        contains(matrix.msystem, '64') && 'x86_64' || 'i686'
+        }}
+      MINGW_PACKAGE_PREFIX: >-
+        mingw-w${{
+        endsWith(matrix.msystem, '64') && '64' || '32'
+        }}-${{
+        startsWith(matrix.msystem, 'clang') && 'clang' ||
+        startsWith(matrix.msystem, 'ucrt') && 'ucrt' ||
+        'mingw'
+        }}-${{
+        contains(matrix.msystem, 'arm64') && 'aarch64' ||
+        endsWith(matrix.msystem, '64') && 'x86_64' || 'i686'
+        }}
+      CFLAGS: '-mtune=generic -O3 -pipe'
+      CXXFLAGS: '-mtune=generic -O3 -pipe'
+      CPPFLAGS: '-D_FORTIFY_SOURCE=2 -D__USE_MINGW_ANSI_STDIO=1 -DFD_SETSIZE=2048'
+      LDFLAGS: '-pipe'
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
+    strategy:
+      matrix:
+        include:
+          # To mitigate flakiness of MinGW CI, we test only one runtime that newer MSYS2 uses.
+          # Ruby 3.2 is the first Windows Ruby to use OpenSSL 3.x
+          - msystem: 'UCRT64'
+            os: 2022
+            test_task: 'check'
+            test-all-opts: '--name=!/TestObjSpace#test_reachable_objects_during_iteration/'
+          - msystem: 'CLANGARM64'
+            os: 11-arm
+            test_task: 'check'
+      fail-fast: false
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: msys2/setup-msys2@4f806de0a5a7294ffabaff804b38a9b435a73bda # v2.30.0
+        id: msys2
+        with:
+          msystem: ${{ matrix.msystem }}
+          update: true
+          install: >-
+            git
+            make
+            ruby
+            autoconf
+            ${{ env.MINGW_PACKAGE_PREFIX }}-gcc
+            ${{ env.MINGW_PACKAGE_PREFIX }}-ragel
+            ${{ env.MINGW_PACKAGE_PREFIX }}-openssl
+            ${{ env.MINGW_PACKAGE_PREFIX }}-libyaml
+            ${{ env.MINGW_PACKAGE_PREFIX }}-libffi
+
+      - name: Set up env
+        id: setup-env
+        working-directory:
+        run: |
+          $msys2 = ${env:MSYS2_LOCATION}
+          $msystem = ${env:MSYSTEM}.ToLower()
+          echo $msys2\usr\bin $msys2\$msystem\bin |
+            Tee-Object ${env:GITHUB_PATH} -Append -Encoding utf-8
+
+          # Use the fast device for the temporary directory.
+          # %TEMP% is inconsistent with %TMP% and test-all expects they are consistent.
+          # https://github.com/actions/virtual-environments/issues/712#issuecomment-613004302
+          $tmp = ${env:RUNNER_TEMP}
+          echo HOME=$home TMP=$tmp TEMP=$tmp TMPDIR=$tmp |
+            Tee-Object ${env:GITHUB_ENV} -Append -Encoding utf-8
+        shell: pwsh             # cmd.exe does not strip spaces before `|`.
+        env:
+          MSYS2_LOCATION: ${{ steps.msys2.outputs.msys2-location }}
+          MSYSTEM: ${{ matrix.msystem }}
+
+      - name: Remove Strawberry Perl pkg-config
+        working-directory:
+        # `pkg-config.bat` included in Strawberry Perl is written in
+        # Perl and doesn't work when another msys2 `perl` precede its
+        # own `perl`.
+        #
+        # ```
+        # Can't find C:\Strawberry\perl\bin\pkg-config.bat on PATH, '.' not in PATH.
+        # ```
+        run: |
+          Get-Command pkg-config.bat | % { ren $_.path ($_.path + "~") }
+        shell: pwsh
+
+      - name: Misc system & package info
+        working-directory:
+        run: |
+          group() { echo ::group::$'\e[94;1m'"$*"$'\e[m'; }
+          endgroup() { echo ::endgroup::; }
+
+          group Path
+          cygpath -wa / . $(type -p cygpath bash sh)
+          endgroup
+
+          I() {
+              group $1
+              run Where type -pa $1 && { [ $# -eq 1 ] || run Version "$@"; } ||
+                  failed+=($1)
+              endgroup
+          }
+          run() { local w m=$1; shift; w="$("$@")" && show "$m" && indent "$w"; }
+          indent() { [ -z "$1" ] || echo "$1" | /bin/sed '/^$/!s/^/  /'; }
+          show() { echo $'\e[96m'"$*"$'\e[m'; }
+
+          failed=()
+
+          I gcc.exe --version
+          I ragel.exe --version
+          I make.exe --version
+          I openssl.exe version
+          I libcrypto-3-x64.dll
+          I libssl-3-x64.dll
+
+          group Packages
+          pacman -Qs $MINGW_PACKAGE_PREFIX-* | /bin/sed -n "s,local/$MINGW_PACKAGE_PREFIX-,,p"
+          endgroup
+
+          [ ${#failed[@]} -eq 0 ]
+        shell: sh
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: configure
+        run: >
+          ../src/configure --disable-install-doc --prefix=/.
+          --build=$CHOST --host=$CHOST --target=$CHOST
+        shell: sh
+        env:
+          CHOST: ${{ env.MSYS2_ARCH }}-w64-mingw32
+
+      - name: make all
+        timeout-minutes: 30
+        run: make -j4
+
+      - name: make install
+        run: make DESTDIR=../install install-nodoc
+
+      - name: Set up Launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: windows-2022
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          test-tasks: '["test", "test-all", "test-spec"]'
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: test
+        timeout-minutes: 30
+        run: make test test-tool
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test' }}
+
+      - name: test-all
+        timeout-minutes: 45
+        run: |
+          make ${{ StartsWith(matrix.test_task, 'test/') && matrix.test_task || 'test-all' }}
+        env:
+          RUBY_TESTOPTS: >-
+            --retry --job-status=normal --show-skip --timeout-scale=1.5 -j4
+            ${{ matrix.test-all-opts }}
+            ${{ env.TESTS }}
+          BUNDLER_VERSION:
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test-all' || StartsWith(matrix.test_task, 'test/') }}
+
+      - name: test-spec
+        timeout-minutes: 10
+        run: |
+          make ${{ StartsWith(matrix.test_task, 'spec/') && matrix.test_task || 'test-spec' }}
+        if: ${{ matrix.test_task == 'check' || matrix.test_task == 'test-spec' || StartsWith(matrix.test_task, 'spec/') }}
+
+      - uses: ./src/.github/actions/slack
+        with:
+          label: ${{ matrix.msystem }} / ${{ matrix.test_task }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
+    shell: cmd
diff --git a/.github/workflows/modgc.yml b/.github/workflows/modgc.yml
new file mode 100644
index 0000000000..1d14934df8
--- /dev/null
+++ b/.github/workflows/modgc.yml
@@ -0,0 +1,176 @@
+name: ModGC
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  check:
+    strategy:
+      matrix:
+        gc:
+          - name: default
+          - name: mmtk
+            mmtk_build: release
+        os: [macos-latest, ubuntu-latest]
+        include:
+          - test_task: check
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci
+
+    runs-on: ${{ matrix.os }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries (macOS)
+        uses: ./.github/actions/setup/macos
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Install libraries (Ubuntu)
+        uses: ./.github/actions/setup/ubuntu
+        if: ${{ contains(matrix.os, 'ubuntu') }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+        if: ${{ contains(matrix.os, 'ubuntu') }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: false
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: make sure that kern.coredump=1
+        run: |
+          sysctl -n kern.coredump
+          sudo sysctl -w kern.coredump=1
+          sudo chmod -R +rwx /cores/
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Delete unused SDKs
+        # To free up disk space to not run out during the run
+        run: |
+          sudo rm -rf ~/.dotnet
+          sudo rm -rf /Library/Android
+          sudo rm -rf /Library/Developer/CoreSimulator
+        continue-on-error: true
+        if: ${{ contains(matrix.os, 'macos') }}
+
+      - name: Setup Ruby GC Directory
+        run: |
+          echo "MODULAR_GC_DIR=$HOME/ruby_gc" >> $GITHUB_ENV
+
+      - name: Run configure
+        env:
+          arch: ${{ matrix.arch }}
+        run: >-
+          $SETARCH ../src/configure -C --disable-install-doc --with-modular-gc=${{ env.MODULAR_GC_DIR }}
+          ${arch:+--target=$arch-$OSTYPE --host=$arch-$OSTYPE}
+
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+      - name: Set MMTk environment variables
+        run: |
+          echo 'EXCLUDES=../src/test/.excludes-mmtk' >> $GITHUB_ENV
+          echo 'MSPECOPT=-B../src/spec/mmtk.mspec' >> $GITHUB_ENV
+        if: ${{ matrix.gc.name == 'mmtk' }}
+
+      - run: $SETARCH make
+
+      - name: Build Modular  GC
+        run: |
+          echo "RUBY_GC_LIBRARY=${{ matrix.gc.name }}" >> $GITHUB_ENV
+          make install-modular-gc MODULAR_GC=${{ matrix.gc.name }} MMTK_BUILD=${{ matrix.gc.mmtk_build }}
+          make distclean-modular-gc MODULAR_GC=${{ matrix.gc.name }}
+
+      - run: $SETARCH make hello
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os || 'ubuntu-22.04' }}
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          $SETARCH make -s ${{ matrix.test_task }} \
+            ${TESTS:+TESTS="$TESTS"} \
+            ${{ !contains(matrix.test_task, 'bundle') && 'RUBYOPT=-w' || '' }}
+        timeout-minutes: ${{ matrix.gc.timeout || 40 }}
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
+      - name: make skipped tests
+        run: |
+          $SETARCH make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}${{ matrix.arch }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/parse_y.yml b/.github/workflows/parse_y.yml
new file mode 100644
index 0000000000..87facc8a55
--- /dev/null
+++ b/.github/workflows/parse_y.yml
@@ -0,0 +1,100 @@
+name: parse.y
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        include:
+          - test_task: check
+          - test_task: test-bundler-parallel
+          - test_task: test-bundled-gems
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci
+      SETARCH: ${{ matrix.arch && format('setarch {0}', matrix.arch) }}
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc cppflags=-DRUBY_DEBUG --with-parser=parse.y
+
+      - run: make
+
+      - run: make TESTRUN_SCRIPT='-renvutil -v -e "exit EnvUtil.current_parser == %[parse.y]"' run
+        env:
+          RUNOPT0: -I$(tooldir)/lib
+
+      - name: make ${{ matrix.test_task }}
+        run: make -s ${{ matrix.test_task }} RUN_OPTS="$RUN_OPTS" SPECOPTS="$SPECOPTS"
+        env:
+          RUBY_TESTOPTS: ${{ matrix.testopts }}
+          EXCLUDES: '../src/test/.excludes-parsey'
+          RUN_OPTS: ${{ matrix.run_opts || '--parser=parse.y' }}
+          SPECOPTS: ${{ matrix.specopts || '-T --parser=parse.y' }}
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.run_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/post_push.yml b/.github/workflows/post_push.yml
new file mode 100644
index 0000000000..318444c0a2
--- /dev/null
+++ b/.github/workflows/post_push.yml
@@ -0,0 +1,85 @@
+name: Post-push
+on:
+  push:
+    branches:
+      - master
+      - 'ruby_*_*'
+jobs:
+  hooks:
+    name: Post-push hooks
+    runs-on: ubuntu-latest
+    if: ${{ github.repository == 'ruby/ruby' }}
+    steps:
+      - name: Sync git.ruby-lang.org
+        run: |
+          mkdir -p ~/.ssh
+          (umask 066; printenv RUBY_GIT_SYNC_PRIVATE_KEY > ~/.ssh/id_ed25519)
+          ssh-keyscan -t ed25519 git.ruby-lang.org >> ~/.ssh/known_hosts
+          ssh -i ~/.ssh/id_ed25519 git-sync@git.ruby-lang.org "sudo -u git /home/git/git.ruby-lang.org/bin/update-ruby.sh $GITHUB_REF"
+        env:
+          GITHUB_REF: ${{ github.ref }}
+          RUBY_GIT_SYNC_PRIVATE_KEY: ${{ secrets.RUBY_GIT_SYNC_PRIVATE_KEY }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - name: Fetch changesets on bugs.ruby-lang.org
+        run: |
+          curl "https://bugs.ruby-lang.org/sys/fetch_changesets?key=${REDMINE_SYS_API_KEY}" -s --fail-with-body -w '* status: %{http_code}\n'
+        env:
+          REDMINE_SYS_API_KEY: ${{ secrets.REDMINE_SYS_API_KEY }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          fetch-depth: 500 # for notify-slack-commits
+          token: ${{ secrets.MATZBOT_AUTO_UPDATE_TOKEN }}
+
+      - name: Notify commit to Slack
+        run: ruby tool/notify-slack-commits.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          SLACK_WEBHOOK_URL_ALERTS: ${{ secrets.SLACK_WEBHOOK_URL_ALERTS }}
+          SLACK_WEBHOOK_URL_COMMITS: ${{ secrets.SLACK_WEBHOOK_URL_COMMITS }}
+          SLACK_WEBHOOK_URL_RUBY_JP: ${{ secrets.SLACK_WEBHOOK_URL_RUBY_JP }}
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - name: Notify commit to ruby-cvs
+        run: |
+          SENDMAIL="ssh -i ${HOME}/.ssh/id_ed25519 git-sync@git.ruby-lang.org /usr/sbin/sendmail" \
+            ruby tool/commit-email.rb . ruby-cvs@g.ruby-lang.org \
+            "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" "$GITHUB_REF" \
+            --viewer-uri "https://github.com/ruby/ruby/commit/" \
+            --error-to cvs-admin@ruby-lang.org
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GITHUB_REF: ${{ github.ref }}
+        if: ${{ github.ref == 'refs/heads/master' || startsWith(github.ref, 'refs/heads/ruby_') }}
+
+      - name: Auto-correct code styles
+        run: |
+          set -x
+          ruby tool/auto-style.rb "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          EMAIL: svn-admin@ruby-lang.org
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - name: Push PR notes to GitHub
+        run: ruby tool/notes-github-pr.rb "$(pwd)/.git" "$GITHUB_OLD_SHA" "$GITHUB_NEW_SHA" refs/heads/master
+        env:
+          GITHUB_OLD_SHA: ${{ github.event.before }}
+          GITHUB_NEW_SHA: ${{ github.event.after }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+          EMAIL: svn-admin@ruby-lang.org
+        if: ${{ github.ref == 'refs/heads/master' }}
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/pr-playground.yml b/.github/workflows/pr-playground.yml
new file mode 100644
index 0000000000..f3c0556429
--- /dev/null
+++ b/.github/workflows/pr-playground.yml
@@ -0,0 +1,127 @@
+name: Post Playground link to PR
+on:
+  pull_request_target:
+    types: [labeled]
+  workflow_run:
+    workflows: ["WebAssembly"]
+    types: [completed]
+
+jobs:
+  post-summary:
+    name: Post Playground link
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    # Post a comment only if the PR status check is passed and the PR is labeled with `Playground`.
+    # Triggered twice: when the PR is labeled and when PR build is passed.
+    if: >-
+      ${{ false
+      || (true
+        && github.event_name == 'pull_request_target'
+        && contains(github.event.pull_request.labels.*.name, 'Playground'))
+      || (true
+        && github.event_name == 'workflow_run'
+        && github.event.workflow_run.conclusion == 'success'
+        && github.event.workflow_run.event == 'pull_request')
+      }}
+    steps:
+      - uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const fs = require('fs/promises');
+
+            const buildWorkflowPath = '.github/workflows/wasm.yml';
+            const findSuccessfuBuildRun = async (pr) => {
+              const opts = github.rest.actions.listWorkflowRunsForRepo.endpoint.merge({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                status: 'success',
+                branch: pr.head.ref,
+              });
+              const runs = await github.paginate(opts);
+              const buildRun = runs.find(run => run.path == buildWorkflowPath);
+              return buildRun;
+            }
+
+            const postComment = async (body, pr) => {
+              const { data: comments } = await github.rest.issues.listComments({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: pr.number,
+              });
+
+              const commentOpts = { owner: context.repo.owner, repo: context.repo.repo, body: comment };
+
+              const existingComment = comments.find(comment => comment.body.startsWith(magicComment));
+              if (existingComment) {
+                core.info(`Updating existing comment: ${existingComment.html_url}`);
+                await github.rest.issues.updateComment({
+                  ...commentOpts, comment_id: existingComment.id
+                });
+              } else {
+                await github.rest.issues.createComment({
+                  ...commentOpts, issue_number: pr.number
+                });
+              }
+            }
+
+            const derivePRNumber = async () => {
+              if (context.payload.pull_request) {
+                return context.payload.pull_request.number;
+              }
+              // Workaround for https://github.com/orgs/community/discussions/25220
+
+              const { data: { artifacts } } = await github.rest.actions.listWorkflowRunArtifacts({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                run_id: context.payload.workflow_run.id,
+              });
+              const artifact = artifacts.find(artifact => artifact.name == 'github-pr-info');
+              if (!artifact) {
+                throw new Error('Cannot find github-pr-info.txt artifact');
+              }
+
+              const { data } = await github.rest.actions.downloadArtifact({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                artifact_id: artifact.id,
+                archive_format: 'zip',
+              });
+
+              await fs.writeFile('pr-info.zip', Buffer.from(data));
+              await exec.exec('unzip', ['pr-info.zip']);
+              return await fs.readFile('github-pr-info.txt', 'utf8');
+            }
+
+            const prNumber = await derivePRNumber();
+
+            const { data: pr } = await github.rest.pulls.get({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              pull_number: prNumber,
+            });
+
+            core.info(`Checking if the PR ${prNumber} is labeled with Playground...`);
+            if (!pr.labels.some(label => label.name == 'Playground')) {
+              core.info(`The PR is not labeled with Playground.`);
+              return;
+            }
+
+            core.info(`Checking if the build is successful for ${pr.head.ref} in ${pr.head.repo.owner.login}/${pr.head.repo.name}...`);
+            const buildRun = await findSuccessfuBuildRun(pr);
+            if (!buildRun) {
+              core.info(`No successful build run found for ${buildWorkflowPath} on ${pr.head.ref} yet.`);
+              return;
+            }
+            core.info(`Found a successful build run: ${buildRun.html_url}`);
+
+            const runLink = `${process.env.GITHUB_SERVER_URL}/${process.env.GITHUB_REPOSITORY}/actions/runs/${process.env.GITHUB_RUN_ID}`;
+            const magicComment = `<!-- AUTO-GENERATED-COMMENT-PR-PLAYGROUND -->`;
+            const comment = `${magicComment}
+            **Try on Playground**: https://ruby.github.io/play-ruby?run=${buildRun.id}
+            This is an automated comment by [\`pr-playground.yml\`](${runLink}) workflow.
+            `;
+            core.info(`Comment: ${comment}`);
+            await postComment(comment, pr);
+
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000000..3caeee9a3b
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,107 @@
+name: Publish Ruby packages
+
+on:
+  repository_dispatch:
+    types:
+      - release
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version of the Ruby package to release'
+        required: true
+        default: '3.3.4'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6.0.1
+
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.3.4
+
+      - name: Store Ruby version
+        run: |
+          echo "RUBY_VERSION=${{ github.event.client_payload.version || github.event.inputs.version }}" >> $GITHUB_ENV
+
+      - name: Store ABI version
+        run: echo "ABI_VERSION=$(echo ${{ env.RUBY_VERSION }} | cut -d '.' -f 1-2)" >> $GITHUB_ENV
+
+      - name: Copy draft package `/tmp` to `/pub` directory
+        run: tool/release.sh ${{ env.RUBY_VERSION }}
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.FTP_R_L_O_AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.FTP_R_L_O_AWS_SECRET_ACCESS_KEY }}
+          AWS_DEFAULT_REGION: us-west-2
+
+      - name: Purge URLs of release package
+        run: |
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.tar.gz
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.tar.xz
+          curl -X POST \
+            -H "Fastly-Key: ${{ secrets.FASTLY_PURGE_TOKEN }}" \
+            https://api.fastly.com/purge/cache.ruby-lang.org/pub/ruby/${{ env.ABI_VERSION }}/ruby-${{ env.RUBY_VERSION }}.zip
+
+      - name: Create a release on GitHub
+        run: |
+          RELEASE_TAG=$(ruby tool/ruby-version.rb tag "${{ env.RUBY_VERSION }}")
+          echo $RELEASE_TAG
+          PREVIOUS_RELEASE_TAG=$(ruby tool/ruby-version.rb previous-tag "${{ env.RUBY_VERSION }}")
+          echo $PREVIOUS_RELEASE_TAG
+          tool/gen-github-release.rb $PREVIOUS_RELEASE_TAG $RELEASE_TAG --no-dry-run
+        env:
+          GITHUB_TOKEN: ${{ secrets.MATZBOT_AUTO_UPDATE_TOKEN }}
+
+      - name: Update versions index
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/actions/dispatches \
+            -d '{"event_type": "update_index"}'
+
+      - name: Build and push Docker images
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/docker-images/actions/workflows/build.yml/dispatches \
+            -d '{"ref": "master", "inputs": {"ruby_version": "${{ env.RUBY_VERSION }}"}}'
+
+      - name: Build snapcraft packages
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/snap.ruby/dispatches \
+            -d '{"event_type": "build", "client_payload": {"ruby_version": "${{ env.RUBY_VERSION }}"}}'
+
+      - name: Store the latest LTS version of OpenSSL
+        run: |
+          echo "OPENSSL_VERSION=`curl -s https://api.github.com/repos/openssl/openssl/releases | jq -r '.[].tag_name | select(startswith("openssl-3.0"))' | sort -Vr | head -n1 | cut -d'-' -f2`" >> $GITHUB_ENV
+
+      - name: Update ruby-build definition
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.RUBY_BUILD_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/rbenv/ruby-build/dispatches \
+            -d '{"event_type": "update-ruby", "client_payload": {"ruby_version": "${{ env.RUBY_VERSION }}", "openssl_version": "${{ env.OPENSSL_VERSION }}"}}'
+
+      - name: Update all-ruby definition
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/all-ruby/dispatches \
+            -d '{"event_type": "update"}'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 0000000000..5d4474d978
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,18 @@
+name: Start release workflow
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build release package
+        run: |
+          curl -L -X POST \
+            -H "Authorization: Bearer ${{ secrets.MATZBOT_GITHUB_WORKFLOW_TOKEN }}" \
+            -H "Accept: application/vnd.github+json" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/ruby/actions/dispatches \
+            -d '{"event_type": "${{ github.ref }}"}'
diff --git a/.github/workflows/rust-warnings.yml b/.github/workflows/rust-warnings.yml
new file mode 100644
index 0000000000..a2e3208e52
--- /dev/null
+++ b/.github/workflows/rust-warnings.yml
@@ -0,0 +1,60 @@
+# Surface Rust warnings on PRs that touch any Rust code.
+# Not a required check so we never block people over new warnings
+# that might come from a new Rust version being released.
+name: Rust warnings
+on:
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    paths:
+      - '**.rs'
+      - '!**.inc.rs'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  rust-warnings:
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - name: Install Rust
+        run: rustup default beta
+
+      - name: Rust warnings
+        shell: bash
+        run: |
+          set -eu
+          cargo check --quiet --all-features --message-format=json \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
+            | tee messages.txt
+          (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
+
+      - name: "📜 `rustdoc` warnings"
+        shell: bash
+        run: |
+          set -eu
+          cargo doc --document-private-items --all --no-deps --message-format=json \
+            | jq -r 'select(.message.level | IN("warning", "error")) | .message.rendered' \
+            | tee messages.txt
+          (exit "${PIPESTATUS[0]}") && ! grep --quiet '[^[:space:]]' messages.txt
diff --git a/.github/workflows/scorecards.yml b/.github/workflows/scorecards.yml
new file mode 100644
index 0000000000..c607098997
--- /dev/null
+++ b/.github/workflows/scorecards.yml
@@ -0,0 +1,78 @@
+# This workflow uses actions that are not certified by GitHub. They are provided
+# by a third-party and are governed by separate terms of service, privacy
+# policy, and support documentation.
+
+name: Scorecard supply-chain security
+on:
+  # For Branch-Protection check. Only the default branch is supported. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
+  branch_protection_rule:
+  # To guarantee Maintained check is occasionally updated. See
+  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
+  schedule:
+    - cron: '39 3 * * 5'
+  # push:
+  #   branches: [ "master" ]
+
+# Declare default permissions as read only.
+permissions: read-all
+
+jobs:
+  analysis:
+    name: Scorecard analysis
+    runs-on: ubuntu-latest
+    # `publish_results: true` only works when run from the default branch. conditional can be removed if disabled.
+    if: github.event.repository.default_branch == github.ref_name || github.event_name == 'pull_request'
+    permissions:
+      # Needed to upload the results to code-scanning dashboard.
+      security-events: write
+      # Needed to publish results and get a badge (see publish_results below).
+      id-token: write
+      # Uncomment the permissions below if installing in a private repository.
+      # contents: read
+      # actions: read
+
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          persist-credentials: false
+
+      - name: "Run analysis"
+        uses: ossf/scorecard-action@4eaacf0543bb3f2c246792bd56e8cdeffafb205a # v2.4.3
+        with:
+          results_file: results.sarif
+          results_format: sarif
+          # (Optional) "write" PAT token. Uncomment the `repo_token` line below if:
+          # - you want to enable the Branch-Protection check on a *public* repository, or
+          # - you are installing Scorecard on a *private* repository
+          # To create the PAT, follow the steps in https://github.com/ossf/scorecard-action?tab=readme-ov-file#authentication-with-fine-grained-pat-optional.
+          # repo_token: ${{ secrets.SCORECARD_TOKEN }}
+
+          # Public repositories:
+          #   - Publish results to OpenSSF REST API for easy access by consumers
+          #   - Allows the repository to include the Scorecard badge.
+          #   - See https://github.com/ossf/scorecard-action#publishing-results.
+          # For private repositories:
+          #   - `publish_results` will always be set to `false`, regardless
+          #     of the value entered here.
+          publish_results: true
+
+          # (Optional) Uncomment file_mode if you have a .gitattributes with files marked export-ignore
+          # file_mode: git
+
+      # Upload the results as artifacts (optional). Commenting out will disable uploads of run results in SARIF
+      # format to the repository Actions tab.
+      - name: "Upload artifact"
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        with:
+          name: SARIF file
+          path: results.sarif
+          retention-days: 5
+
+      # Upload the results to GitHub's code scanning dashboard (optional).
+      # Commenting out will disable upload of results to your repo's Code Scanning dashboard
+      - name: "Upload to code-scanning"
+        uses: github/codeql-action/upload-sarif@v4
+        with:
+          sarif_file: results.sarif
diff --git a/.github/workflows/spec_guards.yml b/.github/workflows/spec_guards.yml
new file mode 100644
index 0000000000..cf4661555c
--- /dev/null
+++ b/.github/workflows/spec_guards.yml
@@ -0,0 +1,67 @@
+name: Rubyspec Version Guards Check
+
+on:
+  push:
+    paths:
+      - '.github/workflows/spec_guards.yml'
+      - 'spec/**'
+      - '!spec/*.md'
+  pull_request:
+    paths:
+      - '.github/workflows/spec_guards.yml'
+      - 'spec/**'
+      - '!spec/*.md'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  rubyspec:
+    name: Rubyspec
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    strategy:
+      matrix:
+        # Specs from ruby/spec should still run on all supported Ruby versions.
+        # This also ensures the needed ruby_version_is guards are there, see spec/README.md.
+        ruby:
+          - ruby-3.2
+          - ruby-3.3
+          - ruby-3.4
+          - ruby-4.0
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler: none
+
+      - run: gem install webrick
+
+      - run: ruby ../mspec/bin/mspec
+        working-directory: spec/ruby
+        env:
+          CHECK_LEAKS: true
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.ruby }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
diff --git a/.github/workflows/sync_default_gems.yml b/.github/workflows/sync_default_gems.yml
new file mode 100644
index 0000000000..9ff97d5a4e
--- /dev/null
+++ b/.github/workflows/sync_default_gems.yml
@@ -0,0 +1,77 @@
+name: Sync default gems
+
+env:
+  DEFAULT_GEM_SYNC_ENABLED: true
+
+on:
+  workflow_dispatch:
+    inputs:
+      gem:
+        required: true
+        description: 'Name of the gem to be synchronized'
+        type: string
+      before:
+        required: true
+        description: 'Gem commit SHA before sync'
+        type: string
+      after:
+        required: true
+        description: 'Gem commit SHA after sync'
+        type: string
+
+jobs:
+  sync_default_gems:
+    name: Sync default gem ${{ github.event.inputs.gem }}
+
+    permissions:
+      contents: write # for Git to git push
+
+    runs-on: ubuntu-latest
+
+    if: ${{ github.repository == 'ruby/ruby' }}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        name: Check out ruby/ruby
+        with:
+          token: ${{ github.repository == 'ruby/ruby' && secrets.MATZBOT_AUTO_UPDATE_TOKEN || secrets.GITHUB_TOKEN }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.4'
+          bundler: none
+
+      - name: Run tool/sync_default_gems.rb
+        id: sync
+        run: |
+          ruby_before=$(git rev-parse HEAD)
+          set -x
+          ruby tool/sync_default_gems.rb "${gem_name}" "${gem_before}..${gem_after}"
+          if [[ "$(git rev-parse HEAD)" != "$ruby_before" ]]; then
+            echo update=true >> $GITHUB_OUTPUT
+          fi
+        env:
+          gem_name: ${{ github.event.inputs.gem }}
+          gem_before: ${{ github.event.inputs.before }}
+          gem_after: ${{ github.event.inputs.after }}
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+
+      - name: Push
+        run: |
+          git pull --rebase origin ${GITHUB_REF#refs/heads/}
+          git push origin ${GITHUB_REF#refs/heads/}
+        if: ${{ steps.sync.outputs.update && env.DEFAULT_GEM_SYNC_ENABLED == 'true' }}
+        env:
+          EMAIL: svn-admin@ruby-lang.org
+          GIT_AUTHOR_NAME: git
+          GIT_COMMITTER_NAME: git
+
+      - uses: ./.github/actions/slack
+        with:
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+          label: "${{ github.event.inputs.gem }} (<https://github.com/${{ github.event.inputs.gem == 'rubygems' && 'rubygems' || 'ruby' }}/${{ github.event.inputs.gem }}/compare/${{ github.event.inputs.before }}...${{ github.event.inputs.after }}|diff>)"
+          event_name: workflow_dispatch
+          extra_channel_id: C05FPKAU743 # alerts-sync
+        if: ${{ failure() }}
diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
new file mode 100644
index 0000000000..88c19b6fe6
--- /dev/null
+++ b/.github/workflows/ubuntu.yml
@@ -0,0 +1,269 @@
+name: Ubuntu
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        # We enumerate every job in matrix.include to save build time
+        include:
+          - test_task: check
+            configure: 'cppflags=-DVM_CHECK_MODE'
+          - test_task: check
+            arch: i686
+          - test_task: check
+            configure: '--disable-yjit'
+          - test_task: check
+            configure: '--enable-shared --enable-load-relative'
+          - test_task: test-bundler-parallel
+            timeout: 50
+          - test_task: test-bundled-gems
+          - test_task: check
+            os: ubuntu-24.04
+            extra_checks: [capi]
+          # ubuntu-24.04-arm jobs don't start on ruby/ruby as of 2025-10-29
+          #- test_task: check
+          #  os: ubuntu-24.04-arm
+      fail-fast: false
+
+    env: &make-env
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUBY_DEBUG: ci
+
+    runs-on: ${{ matrix.os || 'ubuntu-22.04' }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps: &make-steps
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+        with:
+          arch: ${{ matrix.arch }}
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+        if: >-
+          ${{ !endsWith(matrix.os, 'arm')
+          && !endsWith(matrix.os, 'ppc64le') && !endsWith(matrix.os, 's390x') }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          clean: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Run configure
+        env:
+          arch: ${{ matrix.arch }}
+          configure: ${{ matrix.configure }}
+        run: >-
+          $SETARCH ../src/configure -C --disable-install-doc ${configure:-cppflags=-DRUBY_DEBUG}
+          ${arch:+--target=$arch-$OSTYPE --host=$arch-$OSTYPE}
+
+      - run: $SETARCH make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: $SETARCH make
+
+      - run: $SETARCH make hello
+
+      - name: runirb
+        run: |
+          echo IRB::VERSION | $SETARCH make runirb RUNOPT="-- -f"
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ${{ matrix.os || 'ubuntu-22.04' }}
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+        continue-on-error: true
+        timeout-minutes: 3
+
+      # Avoid possible test failures with the zlib applying the following patch
+      # on s390x CPU architecture.
+      # https://github.com/madler/zlib/pull/410
+      - name: Disable DFLTCC
+        run: echo "DFLTCC=0" >> $GITHUB_ENV
+        if: ${{ endsWith(matrix.os, 's390x') }}
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          $SETARCH make -s ${{ matrix.test_task }} \
+          ${TESTS:+TESTS="$TESTS"} \
+          ${{ !contains(matrix.test_task, 'bundle') && 'RUBYOPT=-w' || '' }}
+        timeout-minutes: ${{ matrix.timeout || 40 }}
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+
+      - name: make skipped tests
+        run: |
+          $SETARCH make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - name: test-pc
+        run: |
+          DESTDIR=${RUNNER_TEMP-${TMPDIR-/tmp}}/installed
+          $SETARCH make test-pc "DESTDIR=$DESTDIR"
+
+      - name: CAPI extensions
+        uses: ./.github/actions/capiext
+        with:
+          builddir: build
+          make: '$SETARCH make'
+        env:
+          RUBY_TESTOPTS: '-v --tty=no'
+        if: ${{ contains(matrix.extra_checks, 'capi') }}
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}${{ matrix.arch }}${{ matrix.os }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  make-ibm:
+    strategy:
+      matrix:
+        include:
+          - test_task: check
+            os: ubuntu-24.04-ppc64le
+          - test_task: check
+            os: ubuntu-24.04-s390x
+      fail-fast: false
+
+    env: *make-env
+
+    runs-on: ${{ matrix.os }}
+
+    if: >-
+      ${{github.repository == 'ruby/ruby'
+      && !(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps: *make-steps
+
+  # Separated from `make` job to avoid making it a required status check
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Using the same setup as ZJIT jobs
+          - bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install"
+
+      - run: make install
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "ruby::../build/install/bin/ruby" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
new file mode 100644
index 0000000000..0d2a6f0545
--- /dev/null
+++ b/.github/workflows/wasm.yml
@@ -0,0 +1,179 @@
+name: WebAssembly
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions: # added using https://github.com/step-security/secure-workflows
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        entry:
+#         # wasmtime can't compile non-optimized Asyncified binary due to locals explosion
+#         - { name: O0-debuginfo, optflags: '-O0', debugflags: '-g', wasmoptflags: '-O1' }
+#         - { name: O1,           optflags: '-O1', debugflags: ''  , wasmoptflags: '-O1' }
+          - { name: O2, optflags: '-O2', debugflags: '', wasmoptflags: '-O2' }
+#         - { name: O3,           optflags: '-O3', debugflags: ''  , wasmoptflags: '-O3' }
+#         # -O4 is equivalent to -O3 in clang, but it's different in wasm-opt
+#         - { name: O4,           optflags: '-O3', debugflags: ''  , wasmoptflags: '-O4' }
+#         - { name: Oz,           optflags: '-Oz', debugflags: ''  , wasmoptflags: '-Oz' }
+      fail-fast: false
+
+    env:
+      RUBY_TESTOPTS: '-q --tty=no'
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      WASI_SDK_VERSION_MAJOR: 25
+      WASI_SDK_VERSION_MINOR: 0
+      BINARYEN_VERSION: 113
+      WASMTIME_VERSION: v15.0.0
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Install libraries
+        run: |
+          set -ex
+          sudo apt-get update -q || :
+          sudo apt-get install --no-install-recommends -q -y ruby make autoconf git wget
+
+          wasi_sdk_deb="wasi-sdk-${WASI_SDK_VERSION_MAJOR}.${WASI_SDK_VERSION_MINOR}-x86_64-linux.deb"
+          wget "https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION_MAJOR}/${wasi_sdk_deb}"
+          sudo dpkg -i "$wasi_sdk_deb"
+          rm -f "$wasi_sdk_deb"
+
+          mkdir build-sdk
+          pushd build-sdk
+
+          wasmtime_url="https://github.com/bytecodealliance/wasmtime/releases/download/${WASMTIME_VERSION}/wasmtime-${WASMTIME_VERSION}-x86_64-linux.tar.xz"
+          wget -O - "$wasmtime_url" | tar xJf -
+          sudo ln -fs "$PWD/wasmtime-${WASMTIME_VERSION}-x86_64-linux/wasmtime" /usr/local/bin/wasmtime
+
+          binaryen_tarball="binaryen-version_${BINARYEN_VERSION}-x86_64-linux.tar.gz"
+          binaryen_url="https://github.com/WebAssembly/binaryen/releases/download/version_${BINARYEN_VERSION}/${binaryen_tarball}"
+          wget -O - "$binaryen_url" | tar xfz -
+          sudo ln -fs "$PWD/binaryen-version_${BINARYEN_VERSION}/bin/wasm-opt" /usr/local/bin/wasm-opt
+        working-directory: src
+
+      - name: Set ENV
+        run: |
+          echo "WASI_SDK_PATH=/opt/wasi-sdk" >> $GITHUB_ENV
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - name: Build baseruby
+        run: |
+          set -ex
+          mkdir ../baseruby
+          pushd ../baseruby
+          ../src/configure --prefix=$PWD/install
+          make
+          make install
+
+      - name: Download config.guess with wasi version
+        run: |
+          rm tool/config.guess tool/config.sub
+          ruby tool/downloader.rb -d tool -e gnu config.guess config.sub
+        working-directory: src
+
+      - name: Run configure
+        run: |
+          ../src/configure \
+            --host wasm32-unknown-wasi \
+            --with-baseruby=$PWD/../baseruby/install/bin/ruby \
+            --with-static-linked-ext \
+            --with-ext=cgi/escape,continuation,coverage,date,digest/bubblebabble,digest,digest/md5,digest/rmd160,digest/sha1,digest/sha2,etc,fcntl,json,json/generator,json/parser,objspace,pathname,rbconfig/sizeof,ripper,stringio,strscan,monitor \
+            LDFLAGS=" \
+              -Xlinker --stack-first \
+              -Xlinker -z -Xlinker stack-size=16777216 \
+            " \
+            optflags="${{ matrix.entry.optflags }}" \
+            debugflags="${{ matrix.entry.debugflags }}" \
+            wasmoptflags="${{ matrix.entry.wasmoptflags }} ${{ matrix.entry.debugflags }}"
+
+      # miniruby may not be built when cross-compling
+      - run: make mini ruby
+
+      - run: make install DESTDIR=$PWD/../install
+      - run: tar cfz ../install.tar.gz -C ../install .
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        with:
+          name: ruby-wasm-install
+          path: ${{ github.workspace }}/install.tar.gz
+      - name: Show Playground URL to try the build
+        run: |
+          echo "Try on Playground: https://ruby.github.io/play-ruby?run=$GITHUB_RUN_ID" >> $GITHUB_STEP_SUMMARY
+
+      - name: Run basictest
+        run: wasmtime run ./../build/miniruby --mapdir /::./ -- basictest/test.rb
+        working-directory: src
+
+      - name: Run bootstraptest (no thread)
+        run: |
+          NO_THREAD_TESTS="$(grep -L Thread -R ./bootstraptest | awk -F/ '{ print $NF }' | uniq | sed -n 's/test_\(.*\).rb/\1/p' | paste -s -d, -)"
+          ruby ./bootstraptest/runner.rb --ruby="$(which wasmtime) run $PWD/../build/ruby --mapdir /::./ -- " --verbose "--sets=$NO_THREAD_TESTS"
+        working-directory: src
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.entry.name }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+      # Workaround for https://github.com/orgs/community/discussions/25220
+      - name: Save Pull Request number
+        if: ${{ github.event_name == 'pull_request' }}
+        run: echo "${{ github.event.pull_request.number }}" >> ${{ github.workspace }}/github-pr-info.txt
+      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
+        if: ${{ github.event_name == 'pull_request' }}
+        with:
+          name: github-pr-info
+          path: ${{ github.workspace }}/github-pr-info.txt
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
new file mode 100644
index 0000000000..1d44a5482c
--- /dev/null
+++ b/.github/workflows/windows.yml
@@ -0,0 +1,201 @@
+name: Windows
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      matrix:
+        include:
+          - os: 2022
+            vc: 2022
+            test_task: check
+          - os: 2025
+            vc: 2022
+            test_task: check
+          - os: 11-arm
+            test_task: 'btest test-basic test-tool' # check and test-spec are broken yet.
+            target: arm64
+          - os: 2025
+            vc: 2022
+            test_task: test-bundled-gems
+      fail-fast: false
+
+    runs-on: windows-${{ matrix.os }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    name: Windows ${{ matrix.os }}/Visual C++ ${{ matrix.vc }} (${{ matrix.test_task }})
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      VCPKG_DEFAULT_TRIPLET: ${{ matrix.target || 'x64' }}-windows
+
+    steps:
+      - run: md build
+        working-directory:
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          # windows-11-arm has only 3.4.1, 3.4.2, 3.4.3, head
+          ruby-version: ${{ !endsWith(matrix.os, 'arm') && '3.1' || '3.4' }}
+          bundler: none
+          windows-toolchain: none
+
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          make-command: nmake
+          clean: true
+
+      - name: Install tools with scoop
+        run: |
+          Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+          iwr -useb get.scoop.sh | iex
+          Join-Path (Resolve-Path ~).Path "scoop\shims" >> $Env:GITHUB_PATH
+          scoop install vcpkg uutils-coreutils
+        shell: pwsh
+
+      - name: Restore vcpkg artifact
+        id: restore-vcpkg
+        uses: actions/cache/restore@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+        with:
+          path: src\vcpkg_installed
+          key: windows-${{ matrix.os }}-vcpkg-${{ hashFiles('src/vcpkg.json') }}
+
+      - name: Install libraries with vcpkg
+        run: |
+          vcpkg install --vcpkg-root=%USERPROFILE%\scoop\apps\vcpkg\current
+        working-directory: src
+        if: ${{ ! steps.restore-vcpkg.outputs.cache-hit }}
+
+      - name: Save vcpkg artifact
+        uses: actions/cache/save@8b402f58fbc84540c8b491a91e594a4576fec3d7 # v5.0.2
+        with:
+          path: src\vcpkg_installed
+          key: windows-${{ matrix.os }}-vcpkg-${{ hashFiles('src/vcpkg.json') }}
+        if: ${{ ! steps.restore-vcpkg.outputs.cache-hit && (github.ref_name == 'master' || startsWith(github.ref_name, 'ruby_')) }}
+
+      - name: setup env
+        # Available Ruby versions: https://github.com/actions/runner-images/blob/main/images/windows/Windows2019-Readme.md#ruby
+        # %TEMP% is inconsistent with %TMP% and test-all expects they are consistent.
+        # https://github.com/actions/virtual-environments/issues/712#issuecomment-613004302
+        run: |
+          ::- Set up VC ${{ matrix.vc }}
+          set | sort > old.env
+          call ..\src\win32\vssetup.cmd ^
+            -arch=${{ matrix.target || 'amd64' }} ^
+            ${{ matrix.vcvars && '-vcvars_ver=' || '' }}${{ matrix.vcvars }}
+          nmake -f nul
+          set TMP=%RUNNER_TEMP%
+          set TEMP=%RUNNER_TEMP%
+          set MAKEFLAGS=l
+          set /a TEST_JOBS=(15 * %NUMBER_OF_PROCESSORS% / 10) > nul
+          set RUBY_OPT_DIR=%GITHUB_WORKSPACE:\=/%/src/vcpkg_installed/%VCPKG_DEFAULT_TRIPLET%
+          set | sort > new.env
+          comm -13 old.env new.env >> %GITHUB_ENV%
+          del *.env
+
+      - name: baseruby version
+        run: ruby -v
+
+      - name: compiler version
+        run: cl
+
+      - name: volume info
+        run: Get-Volume
+        shell: pwsh
+
+      # TODO: We should use `../src` instead of `D:/a/ruby/ruby/src`
+      - name: Configure
+        run: >-
+          ../src/win32/configure.bat --disable-install-doc
+          --with-opt-dir=%RUBY_OPT_DIR%
+          --with-gmp
+
+      - run: nmake prepare-vcpkg
+
+      - run: nmake incs
+
+      - run: nmake extract-extlibs
+
+      # On all other platforms, test-spec depending on extract-gems (in common.mk) is enough.
+      # But not for this Visual Studio workflow. So here we extract gems before building.
+      - run: nmake extract-gems
+
+      # windows-11-arm runner cannot run `ruby tool/file2lastrev.rb --revision.h --output=revision.h`
+      - name: make revision.h
+        run: |
+          win32\lastrev.bat | win32\ifchange.bat --timestamp=.revision.time revision.h -
+          type revision.h
+        working-directory: src
+
+      - run: nmake
+
+      - name: Set up Launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: windows-${{ matrix.os }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          test-task: ${{ matrix.test_task || 'check' }}
+        continue-on-error: true
+        if: ${{ matrix.test_task != 'test-bundled-gems' }}
+        timeout-minutes: 3
+
+      - run: nmake ${{ matrix.test_task || 'check' }}
+        env:
+          RUBY_TESTOPTS: -j${{ env.TEST_JOBS || 4 }}
+        timeout-minutes: 70
+
+      - uses: ./.github/actions/slack
+        with:
+          label: Windows ${{ matrix.os }} / VC ${{ matrix.vc }} / ${{ matrix.test_task || 'check' }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: windows-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
+    shell: cmd
diff --git a/.github/workflows/wsl.yml b/.github/workflows/wsl.yml
new file mode 100644
index 0000000000..640f18ce42
--- /dev/null
+++ b/.github/workflows/wsl.yml
@@ -0,0 +1,70 @@
+name: Ubuntu on WSL
+
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+jobs:
+  wsl:
+    runs-on: windows-2025
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - name: Install or update WSL
+        uses: Ubuntu/WSL/.github/actions/wsl-install@main
+        with:
+          distro: Ubuntu-24.04
+
+      - name: Install dependencies
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            DEBIAN_FRONTEND=noninteractive sudo apt update
+            DEBIAN_FRONTEND=noninteractive sudo apt install -y ruby build-essential autoconf libssl-dev libyaml-dev zlib1g-dev libgmp-dev libffi-dev
+
+      - name: Check out the repository
+        uses: Ubuntu/WSL/.github/actions/wsl-checkout@main
+        with:
+          distro: Ubuntu-24.04
+          working-dir: /tmp/github/
+          submodules: true
+
+      - name: Build
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            ./autogen.sh
+            ./configure --disable-install-doc
+            make ruby -j4
+            make extract-gems
+            make -j4
+
+      - name: Test
+        uses: Ubuntu/WSL/.github/actions/wsl-bash@main
+        with:
+         distro: Ubuntu-24.04
+         working-dir: /tmp/github/
+         exec: |
+            ./ruby -v
+            # make check TESTS="-j4" MSPECOPT="-j"
diff --git a/.github/workflows/yjit-macos.yml b/.github/workflows/yjit-macos.yml
new file mode 100644
index 0000000000..a59b4d6508
--- /dev/null
+++ b/.github/workflows/yjit-macos.yml
@@ -0,0 +1,198 @@
+name: YJIT macOS
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  cargo:
+    name: cargo test
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - run: RUST_BACKTRACE=1 cargo test
+        working-directory: yjit
+
+      # Also compile and test with all features enabled
+      - run: RUST_BACKTRACE=1 cargo test --all-features
+        working-directory: yjit
+
+      # Check that we can build in release mode too
+      - run: cargo build --release
+        working-directory: yjit
+
+  make:
+    strategy:
+      matrix:
+        include:
+          - test_task: 'check'
+            configure: '--enable-yjit'
+            yjit_opts: '--yjit'
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
+            yjit_opts: '--yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc'
+            specopts: '-T --yjit-call-threshold=1 -T --yjit-verify-ctx -T --yjit-code-gc'
+      fail-fast: false
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.yjit_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc ${{ matrix.configure }}
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - name: Verify that --yjit-dump-disasm works
+        run: |
+          ./miniruby --yjit-call-threshold=1 --yjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for YJIT
+        run: |
+          echo "RUBY_YJIT_ENABLE=1" >> $GITHUB_ENV
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: Set test options for skipped tests
+        run: |
+          set -x
+          TESTS="$(echo "${{ matrix.skipped_tests }}" | sed 's| |$$/ -n!/|g;s|^|-n!/|;s|$|$$/|')"
+          echo "TESTS=${TESTS}" >> $GITHUB_ENV
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: macos-14
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          is-yjit: true
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" \
+            SPECOPTS="$SPECOPTS"
+        timeout-minutes: 60
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          PRECHECK_BUNDLED_GEMS: 'no'
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: make skipped tests
+        run: |
+          make -s test-all TESTS="${TESTS//-n!\//-n/}"
+        env:
+          GNUMAKEFLAGS: ''
+          RUBY_TESTOPTS: '-v --tty=no'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        if: ${{ matrix.test_task == 'check' && matrix.skipped_tests }}
+        continue-on-error: ${{ matrix.continue-on-skipped_tests || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }} ${{ matrix.yjit_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-14
+    needs: [make]
+    steps:
+      - name: ${{ github.workflow }} jobs have failed
+        run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/yjit-ubuntu.yml b/.github/workflows/yjit-ubuntu.yml
new file mode 100644
index 0000000000..150f0b3275
--- /dev/null
+++ b/.github/workflows/yjit-ubuntu.yml
@@ -0,0 +1,240 @@
+name: YJIT Ubuntu
+on:
+  push:
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  cargo:
+    name: cargo test
+
+    # GitHub Action's image seems to already contain a Rust 1.58.0.
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      # For now we can't run cargo test --offline because it complains about the
+      # capstone dependency, even though the dependency is optional
+      #- run: cargo test --offline
+
+      - run: RUST_BACKTRACE=1 cargo test
+        working-directory: yjit
+
+      # Also compile and test with all features enabled
+      - run: RUST_BACKTRACE=1 cargo test --all-features
+        working-directory: yjit
+
+      # Check that we can build in release mode too
+      - run: cargo build --release
+        working-directory: yjit
+
+  lint:
+    name: cargo clippy
+
+    # GitHub Action's image seems to already contain a Rust 1.58.0.
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      # Check that we don't have linting errors in release mode, too
+      - run: cargo clippy --all-targets --all-features
+        working-directory: yjit
+
+  make:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - test_task: 'yjit-bindgen'
+            hint: 'To fix: use patch in logs'
+            # Build with YJIT+ZJIT for output that works in the most number of configurations
+            configure: '--with-gcc=clang-14 --enable-yjit=dev --enable-zjit'
+            libclang_path: '/usr/lib/llvm-14/lib/libclang.so.1'
+
+          - test_task: 'check'
+            # YJIT should be automatically built in release mode on x86-64 Linux with rustc present
+            #configure: "--enable-yjit RUSTC='rustc +1.58.0'"
+            configure: "RUSTC='rustc +1.58.0'"
+            rust_version: '1.58.0'
+
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
+
+          - test_task: 'check'
+            configure: '--enable-yjit=dev'
+            yjit_opts: '--yjit-call-threshold=1 --yjit-verify-ctx --yjit-code-gc'
+            specopts: '-T --yjit-call-threshold=1 -T --yjit-verify-ctx -T --yjit-code-gc'
+
+          - test_task: 'test-bundled-gems'
+            configure: '--enable-yjit=dev'
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.yjit_opts }}
+      YJIT_BENCH_OPTS: ${{ matrix.yjit_bench_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+      RUBY_DEBUG: ci
+      RUST_BACKTRACE: 1
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Install Rust
+        if: ${{ matrix.rust_version }}
+        run: rustup install ${{ matrix.rust_version }} --profile minimal
+
+      - name: Remove cargo
+        # Since this tests a `rustc` build for release, remove `cargo` to ensure
+        # that only `rustc` is used.
+        if: ${{ contains(matrix.configure, 'rustc') }}
+        run: sudo rm $(which -a cargo | uniq)
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix=$(pwd)/install ${{ matrix.configure }}
+
+      - run: make incs
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - name: Verify that --yjit-dump-disasm works
+        run: |
+          ./miniruby --yjit-call-threshold=1 --yjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for YJIT
+        run: |
+          echo "RUBY_YJIT_ENABLE=1" >> $GITHUB_ENV
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      # Check that the binary was built with YJIT
+      - name: Check YJIT enabled
+        run: ./miniruby --yjit -v | grep "+YJIT"
+
+      - name: Set up Launchable
+        id: launchable
+        uses: ./.github/actions/launchable/setup
+        with:
+          os: ubuntu-22.04
+          test-opts: ${{ matrix.configure }}
+          launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
+          builddir: build
+          srcdir: src
+          is-yjit: true
+        continue-on-error: true
+        timeout-minutes: 3
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          test -n "${LAUNCHABLE_STDOUT}" && exec 1> >(tee "${LAUNCHABLE_STDOUT}")
+          test -n "${LAUNCHABLE_STDERR}" && exec 2> >(tee "${LAUNCHABLE_STDERR}")
+
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" MSPECOPT=--debug SPECOPTS="$SPECOPTS" \
+            YJIT_BENCH_OPTS="$YJIT_BENCH_OPTS" YJIT_BINDGEN_DIFF_OPTS="$YJIT_BINDGEN_DIFF_OPTS"
+        timeout-minutes: 90
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          YJIT_BINDGEN_DIFF_OPTS: '--exit-code'
+          LIBCLANG_PATH: ${{ matrix.libclang_path }}
+          LAUNCHABLE_STDOUT: ${{ steps.launchable.outputs.stdout_report_path }}
+          LAUNCHABLE_STDERR: ${{ steps.launchable.outputs.stderr_report_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-latest
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/zjit-macos.yml b/.github/workflows/zjit-macos.yml
new file mode 100644
index 0000000000..a638907811
--- /dev/null
+++ b/.github/workflows/zjit-macos.yml
@@ -0,0 +1,214 @@
+name: ZJIT macOS
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  make:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - test_task: 'check'
+            run_opts: '--zjit-call-threshold=1'
+            specopts: '-T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'check'
+            run_opts: '--zjit-disable-hir-opt --zjit-call-threshold=1'
+            specopts: '-T --zjit-disable-hir-opt -T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'zjit-check' # zjit-test + quick feedback of test_zjit.rb
+            configure: '--enable-yjit=dev --enable-zjit'
+            rust_version: "1.85.0"
+
+          - test_task: 'ruby'
+            hint: 'combo build test'
+            configure: '--enable-yjit --enable-zjit'
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.run_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+      TESTOPTS: ${{ matrix.testopts }}
+      ZJIT_RB_BUG: 1
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - name: Install libraries
+        uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Install Rust
+        if: ${{ matrix.rust_version }}
+        run: |
+          rustup install ${{ matrix.rust_version }} --profile minimal
+          rustup default ${{ matrix.rust_version }}
+
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: nextest@0.9
+        if: ${{ matrix.test_task == 'zjit-check' }}
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc ${{ matrix.configure }}
+
+      - run: make
+
+      - name: Verify that --zjit-dump-disasm works
+        run: |
+          ./miniruby --zjit-call-threshold=1 --zjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      - name: Set ENV for ZJIT
+        run: |
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" \
+            SPECOPTS="$SPECOPTS" \
+            TESTOPTS="$TESTOPTS"
+        timeout-minutes: 60
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          EXCLUDES: '../src/test/.excludes-zjit'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          PRECHECK_BUNDLED_GEMS: 'no'
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: macos-14
+    needs: [make]
+    steps:
+      - run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+  # Separated from `make` job to avoid making it a required status check for now
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Test --call-threshold=2 with 2 iterations in total
+          - ruby_opts: '--zjit-call-threshold=2'
+            bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+            configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
+
+    runs-on: macos-14
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/macos
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install" ${{ matrix.configure }}
+
+      - run: make install
+
+      # setup/directories set MAKEFLAGS=-j4 for macOS, which randomly fails sqlite3.gem builds
+      - name: Unset MAKEFLAGS
+        run: echo "MAKEFLAGS=" >> "$GITHUB_ENV"
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "zjit::../build/install/bin/ruby ${{ matrix.ruby_opts }}" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.github/workflows/zjit-ubuntu.yml b/.github/workflows/zjit-ubuntu.yml
new file mode 100644
index 0000000000..28bfec963e
--- /dev/null
+++ b/.github/workflows/zjit-ubuntu.yml
@@ -0,0 +1,267 @@
+name: ZJIT Ubuntu
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'doc/**'
+      - '**/man/*'
+      - '**.md'
+      - '**.rdoc'
+      - '**/.document'
+      - '.*.yml'
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+    # Do not use paths-ignore for required status checks
+    # https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/collaborating-on-repositories-with-code-quality-features/troubleshooting-required-status-checks#handling-skipped-but-required-checks
+  merge_group:
+
+concurrency:
+  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
+  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}
+
+permissions:
+  contents: read
+
+jobs:
+  lint:
+    name: cargo clippy
+
+    runs-on: ubuntu-22.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - run: cargo clippy --all-targets --all-features
+        working-directory: zjit
+
+  make:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - test_task: 'check'
+            run_opts: '--zjit-call-threshold=1'
+            specopts: '-T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'check'
+            run_opts: '--zjit-disable-hir-opt --zjit-call-threshold=1'
+            specopts: '-T --zjit-disable-hir-opt -T --zjit-call-threshold=1'
+            configure: '--enable-zjit=dev'
+
+            # The optimizer benefits from at least 1 iteration of profiling. Also, many
+            # regression tests in bootstraptest/test_yjit.rb assume call-threshold=2.
+          - test_task: 'btest'
+            run_opts: '--zjit-call-threshold=2'
+            configure: '--enable-zjit=dev'
+
+          - test_task: 'zjit-check' # zjit-test + quick feedback of test_zjit.rb
+            configure: '--enable-yjit --enable-zjit=dev'
+            rust_version: '1.85.0'
+
+          - test_task: 'zjit-bindgen'
+            hint: 'To fix: use patch in logs'
+            # Build with YJIT+ZJIT for output that works in the most number of configurations
+            configure: '--enable-zjit=dev --enable-yjit --with-gcc=clang-16'
+            clang_path: '/usr/bin/clang-16'
+            runs-on: 'ubuntu-24.04' # for clang-16
+
+          - test_task: 'test-bundled-gems'
+            configure: '--enable-zjit=dev'
+            run_opts: '--zjit-call-threshold=1'
+
+    env:
+      GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
+      RUN_OPTS: ${{ matrix.run_opts }}
+      YJIT_BENCH_OPTS: ${{ matrix.yjit_bench_opts }}
+      SPECOPTS: ${{ matrix.specopts }}
+      TESTOPTS: ${{ matrix.testopts }}
+      RUBY_DEBUG: ci
+      BUNDLE_JOBS: 8 # for yjit-bench
+      RUST_BACKTRACE: 1
+      ZJIT_RB_BUG: 1
+
+    runs-on: ${{ matrix.runs-on || 'ubuntu-22.04' }}
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          sparse-checkout-cone-mode: false
+          sparse-checkout: /.github
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
+        with:
+          ruby-version: '3.1'
+          bundler: none
+
+      - uses: taiki-e/install-action@v2
+        with:
+          tool: nextest@0.9
+        if: ${{ matrix.test_task == 'zjit-check' }}
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+          dummy-files: ${{ matrix.test_task == 'check' }}
+          # Set fetch-depth: 10 so that Launchable can receive commits information.
+          fetch-depth: 10
+
+      - name: Install Rust
+        if: ${{ matrix.rust_version }}
+        run: |
+          rustup install ${{ matrix.rust_version }} --profile minimal
+          rustup default ${{ matrix.rust_version }}
+
+      - name: Install rustfmt
+        if: ${{ matrix.test_task == 'zjit-bindgen' }}
+        run: rustup component add rustfmt
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix=$(pwd)/install ${{ matrix.configure }}
+
+      - run: make incs
+
+      - run: make prepare-gems
+        if: ${{ matrix.test_task == 'test-bundled-gems' }}
+
+      - run: make
+
+      - name: Verify that --zjit-dump-disasm works
+        run: |
+          ./miniruby --zjit-call-threshold=1 --zjit-dump-disasm -e0 | \
+          wc -l | \
+          ruby -ne 'raise "Disassembly seems broken in dev build (output has too few lines)" unless $_.to_i > 10'
+        if: ${{ contains(matrix.configure, 'jit=dev') }}
+
+      # Check that the binary was built with ZJIT
+      - name: Check ZJIT enabled
+        run: ./miniruby --zjit -v | grep "+ZJIT"
+        if: ${{ matrix.configure != '--disable-zjit' }}
+
+      - name: Set ENV for ZJIT
+        run: |
+          echo "RUBY_CRASH_REPORT=$(pwd)/rb_crash_%p.txt" >> $GITHUB_ENV
+
+      - name: make ${{ matrix.test_task }}
+        run: |
+          set -x
+          make -s ${{ matrix.test_task }} ${TESTS:+TESTS="$TESTS"} \
+            RUN_OPTS="$RUN_OPTS" MSPECOPT=--debug SPECOPTS="$SPECOPTS" \
+            TESTOPTS="$TESTOPTS" \
+            ZJIT_BINDGEN_DIFF_OPTS="$ZJIT_BINDGEN_DIFF_OPTS"
+        timeout-minutes: 90
+        env:
+          RUBY_TESTOPTS: '-q --tty=no'
+          EXCLUDES: '../src/test/.excludes-zjit'
+          TEST_BUNDLED_GEMS_ALLOW_FAILURES: ''
+          PRECHECK_BUNDLED_GEMS: 'no'
+          SYNTAX_SUGGEST_TIMEOUT: '5'
+          ZJIT_BINDGEN_DIFF_OPTS: '--exit-code'
+          CLANG_PATH: ${{ matrix.clang_path }}
+        continue-on-error: ${{ matrix.continue-on-test_task || false }}
+
+      - name: Dump crash logs
+        if: ${{ failure() }}
+        continue-on-error: true
+        run: |
+          tail --verbose --lines=+1 rb_crash_*.txt
+          exit 1
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ${{ matrix.test_task }} ${{ matrix.configure }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+  result:
+    if: ${{ always() }}
+    name: ${{ github.workflow }} result
+    runs-on: ubuntu-22.04
+    needs: [make]
+    steps:
+      - name: ${{ github.workflow }} jobs have failed
+        run: exit 1
+        working-directory:
+        if: ${{ contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled') }}
+
+  # Separated from `make` job to avoid making it a required status check for now
+  ruby-bench:
+    strategy:
+      matrix:
+        include:
+          # Test --call-threshold=2 with 2 iterations in total
+          - ruby_opts: '--zjit-call-threshold=2'
+            bench_opts: '--warmup=1 --bench=1 --excludes=lobsters'
+            configure: '--enable-zjit=dev_nodebug' # --enable-zjit=dev is too slow
+
+    runs-on: ubuntu-24.04
+
+    if: >-
+      ${{!(false
+      || contains(github.event.head_commit.message, '[DOC]')
+      || contains(github.event.pull_request.title, '[DOC]')
+      || contains(github.event.pull_request.labels.*.name, 'Documentation')
+      || (github.event_name == 'push' && github.event.pull_request.user.login == 'dependabot[bot]')
+      )}}
+
+    steps:
+      - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+
+      - uses: ./.github/actions/setup/ubuntu
+
+      - uses: ./.github/actions/setup/directories
+        with:
+          srcdir: src
+          builddir: build
+          makeup: true
+
+      - name: Run configure
+        run: ../src/configure -C --disable-install-doc --prefix="$(pwd)/install" ${{ matrix.configure }}
+
+      - run: make install
+
+      - name: Checkout ruby-bench
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          repository: ruby/ruby-bench
+          path: ruby-bench
+
+      # If you want to skip failing benchmark, consider using `--excludes`.
+      # e.g. `bench_opts: '--warmup=1 --bench=1 --excludes=railsbench,lobsters'`
+      - name: Run ruby-bench
+        run: ruby run_benchmarks.rb -e "zjit::../build/install/bin/ruby ${{ matrix.ruby_opts }}" ${{ matrix.bench_opts }}
+        working-directory: ruby-bench
+
+      - uses: ./.github/actions/slack
+        with:
+          label: ruby-bench ${{ matrix.bench_opts }} ${{ matrix.ruby_opts }}
+          SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
+        if: ${{ failure() }}
+
+defaults:
+  run:
+    working-directory: build
diff --git a/.gitignore b/.gitignore
index 5808bf1082..6cf5fb5f32 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,39 +1,72 @@
 *-*-*.def
+*-*-*.exp
+*-*-*.lib
 *.a
 *.bak
+*.bc
+*.bundle
 *.dSYM
 *.dmyh
 *.dylib
 *.elc
+*.i
+*.ii
 *.inc
 *.log
 *.o
+*.o.tmp
+*.obj
+*.old
 *.orig
+*.pch
+*.pdb
+*.rbinc
+*.rbbin
 *.rej
+*.s
 *.sav
+*.sl
+*.so
+*.so.*
 *.swp
+*.yarb
 *~
-.*-*
 .*.list
 .*.time
 .DS_Store
+.bundle
 .ccmalloc
 .ext
 .pc
 .ppack
 .svn
+.time
+.ruby-version
 Makefile
+cygruby*.def
 extconf.h
 y.output
 y.tab.c
+*.gcda
+*.gcno
+*.gcov
+*.vscode
+!misc/.vscode
+lcov*.info
 
 # /
+/*-fake.rb
+/*.dll
+/*.exe
+/*.res
 /*.pc
+/*.rc
 /*_prelude.c
+/.downloaded-cache
+/.top-enc.mk
+/build*/
 /COPYING.LIB
-/ChangeLog-1.8.0
-/ChangeLog.pre-alpha
-/ChangeLog.pre1_1
+/ChangeLog
 /Doxyfile
 /GNUmakefile
 /README.atheos
@@ -43,7 +76,9 @@ y.tab.c
 /archive
 /autom4te*.cache
 /automake
+/benchmark/benchmark-driver
 /beos
+/bmlog-*
 /breakpoints.gdb
 /config.cache
 /config.h
@@ -51,6 +86,13 @@ y.tab.c
 /config.status
 /config.status.lineno
 /configure
+/coverage/simplecov
+/coverage/simplecov-html
+/coverage/doclie
+/coverage/.last_run.json
+/coverage/.resultset.json*
+/coverage/assets
+/coverage/index.html
 /doc/capi
 /enc.mk
 /encdb.h
@@ -58,6 +100,9 @@ y.tab.c
 /goruby
 /id.[ch]
 /largefile.h
+/lcov-c-out
+/lcov-rb-out
+/lcov-out
 /lex.c
 /libruby*.*
 /miniprelude.c
@@ -73,39 +118,99 @@ y.tab.c
 /ppack
 /prelude.c
 /preview
+/probes.dmyh
 /probes.h
 /rbconfig.rb
 /rename2.h
 /repack
 /revision.h
+/revision.tmp
+/ripper.tmp.y
 /riscos
 /rubicon
 /ruby
+/ruby-runner
+/ruby-runner.h
 /ruby-man.rd.gz
+/rubyspec_temp
+/run.gdb
+/sizes.c
+/static-ruby
 /test.rb
+/test-coverage.dat
 /tmp
+/vcpkg_installed
 /transdb.h
 /uncommon.mk
 /verconf.h
+/verconf.mk
 /web
-/yasmdata.rb
+
+# /bin/
+
+/bin/*.exe
+/bin/*.dll
+/bin/goruby
+/bin/ruby
 
 # /benchmark/
+/benchmark/bm_require.data
 /benchmark/bmx_*.rb
+/benchmark/fasta.output.*
+/benchmark/wc.input
+
+/enc/*.def
+/enc/*.exp
+/enc/*.lib
+/enc/jis/props.h
+/enc/unicode/data
+
+# /coroutine/
+!/coroutine/**/*.s
+!/coroutine/**/*.S
 
 # /enc/trans/
 /enc/trans/*.c
+/enc/trans/*.def
+/enc/trans/*.exp
+/enc/trans/*.lib
+
+# /exe/
+/exe/goruby
+/exe/ruby
 
 # /ext/
 /ext/extinit.c
+/ext/configure-ext.mk
+/ext/*/exts.mk
+
+# /ext/-test-/cxxanyargs
+/ext/-test-/cxxanyargs/failure*.failed
+
+# /ext/-test-/win32/dln/
+/ext/-test-/win32/dln/dlntest.dll
+/ext/-test-/win32/dln/dlntest.exp
+/ext/-test-/win32/dln/dlntest.lib
+
+# /ext/-test-/gems
+/ext/-test-/gems
+
+# /ext/etc/
+/ext/etc/constdefs.h
+
+# /ext/fiddle/
+/ext/fiddle/libffi-*
 
-# /ext/dl/callback/
-/ext/dl/callback/callback-*.c
-/ext/dl/callback/callback.c
+# /ext/rbconfig/
+/ext/rbconfig/sizeof/sizes.c
+/ext/rbconfig/sizeof/limits.c
 
 # /ext/ripper/
 /ext/ripper/eventids1.c
+/ext/ripper/eventids1.h
+/ext/ripper/.eventids2-check
 /ext/ripper/eventids2table.c
+/ext/ripper/ripper_init.c
 /ext/ripper/ripper.*
 /ext/ripper/ids1
 /ext/ripper/ids2
@@ -115,13 +220,61 @@ y.tab.c
 /ext/socket/constdefs.h
 /ext/socket/constdefs.c
 
-# /ext/tk/
-/ext/tk/config_list
+# /gems
+/gems/*.gem
+/gems/src
+/gems/*-*
 
-# /spec/
-/spec/mspec
-/spec/rubyspec
+# /lib/
+/lib/ruby/[1-9]*.*
+/lib/ruby/vendor_ruby
+
+# /misc/
+/misc/**/__pycache__
+
+# for `make test-bundler`
+/.rspec_status
+
+# /tool/
+/tool/config.guess
+/tool/config.sub
 
 # /win32/
 /win32/*.ico
-/win32/.time
+
+
+# YJIT
+/yjit-bench
+/yjit_exit_locations.dump
+
+# Rust
+/target
+
+# /wasm/
+/wasm/tests/*.wasm
+
+# prism
+/lib/prism/compiler.rb
+/lib/prism/dispatcher.rb
+/lib/prism/dot_visitor.rb
+/lib/prism/dsl.rb
+/lib/prism/inspect_visitor.rb
+/lib/prism/mutation_compiler.rb
+/lib/prism/node.rb
+/lib/prism/reflection.rb
+/lib/prism/serialize.rb
+/lib/prism/visitor.rb
+/prism/api_node.c
+/prism/ast.h
+/prism/diagnostic.c
+/prism/diagnostic.h
+/prism/node.c
+/prism/prettyprint.c
+/prism/serialize.c
+/prism/token_type.c
+/prism/srcs.mk
+
+# tool/update-NEWS-gemlist.rb
+/bundled_gems.json
+/default_gems.json
+/gems/default_gems
diff --git a/.indent.pro b/.indent.pro
index 6a207a0554..1d61cbcad1 100644
--- a/.indent.pro
+++ b/.indent.pro
@@ -2,12 +2,15 @@
 -nbbb
 -nbc
 -br
+-brs
 -nbs
 -ncdb
--ce
--cli0.5
+-nce
+-cdw
+-cli2
+-cbi2
 -ndj
--ei
+-ncs
 -nfc1
 -i4
 -l120
@@ -16,6 +19,14 @@
 -psl
 -sc
 -sob
+-sbi4
+-nut
+-par
 
 -TID
 -TVALUE
+-Tst_data_t
+-Tst_index_t
+-Tst_table
+-Trb_data_type_t
+-TFILE
diff --git a/.mailmap b/.mailmap
new file mode 100644
index 0000000000..213a0f4916
--- /dev/null
+++ b/.mailmap
@@ -0,0 +1,431 @@
+git[bot]                                <svn-admin@ruby-lang.org>
+git[bot]                                <svn-admin@ruby-lang.org> git <svn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+svn[bot]                                <svn-admin@ruby-lang.org> svn <svn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# a_matsuda
+Akira Matsuda                           <ronnie@dio.jp>
+Akira Matsuda                           <ronnie@dio.jp> <a_matsuda@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# aamine
+Minero Aoki                             <aamine@loveruby.net>
+Minero Aoki                             <aamine@loveruby.net> <aamine@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akira
+akira yamada                            <akira@ruby-lang.org>
+## akira yamada                         <akira@ruby-lang.org> <akira@rice.p.arika.org>
+akira yamada                            <akira@ruby-lang.org> <akira@arika.org>
+akira yamada                            <akira@ruby-lang.org> <akira@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akiyoshi
+AKIYOSHI, Masamichi                     <masamichi.akiyoshi@hp.com>
+AKIYOSHI, Masamichi                     <masamichi.akiyoshi@hp.com> <akiyoshi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# akr
+Tanaka Akira                            <akr@fsij.org>
+Tanaka Akira                            <akr@fsij.org> <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# arai
+Koji Arai                               <jca02266@nifty.ne.jp>
+Koji Arai                               <jca02266@nifty.ne.jp> <arai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# arton
+Akio Tajima                             <artonx@yahoo.co.jp>
+Akio Tajima                             <artonx@yahoo.co.jp> <arton@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# aycabta
+aycabta                                 <aycabta@gmail.com>
+aycabta                                 <aycabta@gmail.com> <aycabta@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ayumin
+Ayumu AIZAWA                            <ayumu.aizawa@gmail.com>
+Ayumu AIZAWA                            <ayumu.aizawa@gmail.com> <ayumin@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# azav
+Alexander Zavorine                      <alexandre.zavorine@nokia.com>
+Alexander Zavorine                      <alexandre.zavorine@nokia.com> <azav@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# charliesome
+Charlie Somerville                      <charliesome@ruby-lang.org>
+Charlie Somerville                      <charliesome@ruby-lang.org> <charliesome@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# dave
+Dave Thomas                             <dave@pragprog.com>
+Dave Thomas                             <dave@pragprog.com> <dave@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# davidflanagan
+David Flanagan                          <davidflanagan@ruby-lang.org>
+David Flanagan                          <davidflanagan@ruby-lang.org> <david@think32>
+David Flanagan                          <davidflanagan@ruby-lang.org> <david@davidflanagan.com>
+David Flanagan                          <davidflanagan@ruby-lang.org> <davidflanagan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# dblack
+David A. Black                          <dblack@rubypal.com>
+David A. Black                          <dblack@rubypal.com> <dblack@wobblini.net>
+David A. Black                          <dblack@rubypal.com> <dblack@superlink.net>
+David A. Black                          <dblack@rubypal.com> <dblack@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# drbrain
+Eric Hodel                              <drbrain@segment7.net>
+Eric Hodel                              <drbrain@segment7.net> <drbrain@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# duerst
+Martin Dürst                            <duerst@it.aoyama.ac.jp>
+Martin Dürst                            <duerst@it.aoyama.ac.jp> <duerst@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# eban
+WATANABE Hirofumi                       <eban@ruby-lang.org>
+WATANABE Hirofumi                       <eban@ruby-lang.org> <eban@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# emboss
+Martin Bosslet                          <Martin.Bosslet@gmail.com>
+Martin Bosslet                          <Martin.Bosslet@gmail.com> <Martin.Bosslet@googlemail.com>
+Martin Bosslet                          <Martin.Bosslet@gmail.com> <emboss@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# eregon
+Benoit Daloze                           <eregontp@gmail.com>
+Benoit Daloze                           <eregontp@gmail.com> <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# evan
+Evan Phoenix                            <evan@ruby-lang.org>
+Evan Phoenix                            <evan@ruby-lang.org> <evan@fallingsnow.net>
+Evan Phoenix                            <evan@ruby-lang.org> <evan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# glass
+Masaki Matsushita                       <glass.saga@gmail.com>
+Masaki Matsushita                       <glass.saga@gmail.com> <glass@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gogotanaka
+Kazuki Tanaka                           <gogotanaka@ruby-lang.org>
+Kazuki Tanaka                           <gogotanaka@ruby-lang.org> <gogotanaka@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gotoken
+Kentaro Goto                            <gotoken@gmail.com>
+Kentaro Goto                            <gotoken@gmail.com> <gotoken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gotoyuzo
+GOTOU Yuuzou                            <gotoyuzo@notwork.org>
+GOTOU Yuuzou                            <gotoyuzo@notwork.org> <gotoyuzo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# gsinclair
+Gavin Sinclair                          <gsinclair@soyabean.com.au>
+Gavin Sinclair                          <gsinclair@soyabean.com.au> <gsinclair@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# H_Konishi
+KONISHI Hiromasa                        <konishih@fd6.so-net.ne.jp>
+KONISHI Hiromasa                        <konishih@fd6.so-net.ne.jp> <H_Konishi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# headius
+Charles Oliver Nutter                   <headius@headius.com>
+Charles Oliver Nutter                   <headius@headius.com> <headius@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# hone
+Terence Lee                             <hone@heroku.com>
+Terence Lee                             <hone@heroku.com> <hone@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# hsbt
+Hiroshi SHIBATA                         <hsbt@ruby-lang.org>
+Hiroshi SHIBATA                         <hsbt@ruby-lang.org> <hsbt@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# iwamatsu
+Nobuhiro Iwamatsu                       <iwamatsu@nigauri.org>
+Nobuhiro Iwamatsu                       <iwamatsu@nigauri.org> <iwamatsu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# jeg2
+James Edward Gray II                    <james@graysoftinc.com>
+James Edward Gray II                    <james@graysoftinc.com> <jeg2@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# jim
+Jim Weirich                             <jim@tardis.local>
+Jim Weirich                             <jim@tardis.local> <jim@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# k0kubun
+Takashi Kokubun                         <takashikkbn@gmail.com>
+Takashi Kokubun                         <takashikkbn@gmail.com> <k0kubun@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kanemoto
+Yutaka Kanemoto                         <kanemoto@ruby-lang.org>
+Yutaka Kanemoto                         <kanemoto@ruby-lang.org> <kanemoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# katsu
+UENO Katsuhiro                          <katsu@blue.sky.or.jp>
+UENO Katsuhiro                          <katsu@blue.sky.or.jp> <katsu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kazu
+Kazuhiro NISHIYAMA                      <zn@mbf.nifty.com>
+Kazuhiro NISHIYAMA                      <zn@mbf.nifty.com> <kazu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# keiju
+Keiju Ishitsuka                         <keiju@ishitsuka.com>
+Keiju Ishitsuka                         <keiju@ishitsuka.com> <keiju@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# knu
+Akinori MUSHA                           <knu@iDaemons.org>
+Akinori MUSHA                           <knu@iDaemons.org> <knu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ko1
+Koichi Sasada                           <ko1@atdot.net>
+Koichi Sasada                           <ko1@atdot.net> <ko1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kosaki
+KOSAKI Motohiro                         <kosaki.motohiro@gmail.com>
+KOSAKI Motohiro                         <kosaki.motohiro@gmail.com> <kosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kosako
+K.Kosako                                <sndgk393@ybb.ne.jp>
+K.Kosako                                <sndgk393@ybb.ne.jp> <kosako@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kou
+Sutou Kouhei                            <kou@clear-code.com>
+Sutou Kouhei                            <kou@clear-code.com> <kou@cozmixng.org>
+Sutou Kouhei                            <kou@clear-code.com> <kou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# kouji
+Kouji Takao                             <kouji.takao@gmail.com>
+Kouji Takao                             <kouji.takao@gmail.com> <kouji@takao7.net>
+Kouji Takao                             <kouji.takao@gmail.com> <kouji@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ksaito
+Kazuo Saito                             <ksaito@uranus.dti.ne.jp>
+Kazuo Saito                             <ksaito@uranus.dti.ne.jp> <ksaito@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ktsj
+Kazuki Tsujimoto                        <kazuki@callcc.net>
+Kazuki Tsujimoto                        <kazuki@callcc.net> <ktsj@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# luislavena
+Luis Lavena                             <luislavena@gmail.com>
+Luis Lavena                             <luislavena@gmail.com> <luislavena@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mame
+Yusuke Endoh                            <mame@ruby-lang.org>
+## Yusuke Endoh                         <mame@ruby-lang.org> <mame@tsg.ne.jp>
+Yusuke Endoh                            <mame@ruby-lang.org> <mame@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# marcandre
+Marc-Andre Lafortune                    <github@marc-andre.ca>
+Marc-Andre Lafortune                    <ruby-core@marc-andre.ca>
+Marc-Andre Lafortune                    <ruby-core@marc-andre.ca> <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# matz
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp>
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp> <matz@ruby-lang.org>
+Yukihiro "Matz" Matsumoto               <matz@ruby.or.jp> <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# michal
+Michal Rokos                            <michal@ruby-lang.org>
+Michal Rokos                            <michal@ruby-lang.org> <michal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mneumann
+Michael Neumann                         <mneumann@ruby-lang.org>
+Michael Neumann                         <mneumann@ruby-lang.org> <mneumann@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# mrkn
+Kenta Murata                            <mrkn@mrkn.jp>
+Kenta Murata                            <mrkn@mrkn.jp> <muraken@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+Kenta Murata                            <mrkn@mrkn.jp> <3959+mrkn@users.noreply.github.com>
+Kenta Murata                            <mrkn@mrkn.jp> <mrkn@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nagachika
+nagachika                               <nagachika@ruby-lang.org>
+nagachika                               <nagachika@ruby-lang.org> <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nagai
+Hidetoshi NAGAI                         <nagai@ai.kyutech.ac.jp>
+Hidetoshi NAGAI                         <nagai@ai.kyutech.ac.jp> <nagai@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nahi
+Hiroshi Nakamura                        <nahi@ruby-lang.org>
+Hiroshi Nakamura                        <nahi@ruby-lang.org> <nahi@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nari
+Narihiro Nakamura                       <authornari@gmail.com>
+Narihiro Nakamura                       <authornari@gmail.com> <nari@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# naruse
+NARUSE, Yui                             <naruse@airemix.jp>
+NARUSE, Yui                             <naruse@airemix.jp> <naruse@ruby-lang.org>
+NARUSE, Yui                             <naruse@airemix.jp> <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ngoto
+Naohisa Goto                            <ngotogenome@gmail.com>
+Naohisa Goto                            <ngotogenome@gmail.com> <ngoto@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# nobu
+Nobuyoshi Nakada                        <nobu@ruby-lang.org>
+Nobuyoshi Nakada                        <nobu@ruby-lang.org> <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# normal
+Eric Wong                               <normal@ruby-lang.org>
+Eric Wong                               <normal@ruby-lang.org> <e@80x24.org>
+Eric Wong                               <normal@ruby-lang.org> <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ntalbott
+Nathaniel Talbott                       <ntalbott@ruby-lang.org>
+Nathaniel Talbott                       <ntalbott@ruby-lang.org> <ntalbott@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ocean
+Hirokazu Yamamoto                       <ocean@m2.ccsnet.ne.jp>
+Hirokazu Yamamoto                       <ocean@m2.ccsnet.ne.jp> <ocean@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# odaira
+Rei Odaira                              <rodaira@us.ibm.com>
+Rei Odaira                              <rodaira@us.ibm.com> <Rei.Odaira@gmail.com>
+Rei Odaira                              <rodaira@us.ibm.com> <odaira@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# okkez
+okkez                                   <okkez000@gmail.com>
+okkez                                   <okkez000@gmail.com> <okkez@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# rhe
+Kazuki Yamaguchi                        <k@rhe.jp>
+Kazuki Yamaguchi                        <k@rhe.jp> <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ryan
+Ryan Davis                              <ryand-github@zenspider.com>
+Ryan Davis                              <ryand-github@zenspider.com> <ryand-ruby@zenspider.com>
+Ryan Davis                              <ryand-github@zenspider.com> <ryan@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# samuel
+Samuel Williams                         <samuel.williams@oriontransfer.co.nz>
+Samuel Williams                         <samuel.williams@oriontransfer.co.nz> <samuel@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# seki
+Masatoshi SEKI                          <m_seki@mva.biglobe.ne.jp>
+Masatoshi SEKI                          <m_seki@mva.biglobe.ne.jp> <seki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ser
+Sean Russell                            <ser@germane-software.com>
+Sean Russell                            <ser@germane-software.com> <ser@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shigek
+Shigeo Kobayashi                        <shigek@ruby-lang.org>
+Shigeo Kobayashi                        <shigek@ruby-lang.org> <shigek@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shirosaki
+Hiroshi Shirosaki                       <h.shirosaki@gmail.com>
+Hiroshi Shirosaki                       <h.shirosaki@gmail.com> <shirosaki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sho-h
+Sho Hashimoto                           <sho-h@ruby-lang.org>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho-h@netlab.jp>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho.hsmt@gmail.com>
+Sho Hashimoto                           <sho-h@ruby-lang.org> <sho-h@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shugo
+Shugo Maeda                             <shugo@ruby-lang.org>
+Shugo Maeda                             <shugo@ruby-lang.org> <shugo@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# shyouhei
+卜部昌平                                    <shyouhei@ruby-lang.org>
+卜部昌平                                    <shyouhei@ruby-lang.org> <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# siena
+Siena.                                  <siena@faculty.chiba-u.jp>
+Siena.                                  <siena@faculty.chiba-u.jp> <siena@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sonots
+sonots                                  <sonots@gmail.com>
+sonots                                  <sonots@gmail.com> <sonots@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# sorah
+Sorah Fukumori                          <her@sorah.jp>
+Sorah Fukumori                          <her@sorah.jp> <sorah@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# stomar
+Marcus Stollsteimer                     <sto.mar@web.de>
+Marcus Stollsteimer                     <sto.mar@web.de> <stomar@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# suke
+Masaki Suketa                           <masaki.suketa@nifty.ne.jp>
+Masaki Suketa                           <masaki.suketa@nifty.ne.jp> <suke@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tadd
+Tadashi Saito                           <tad.a.digger@gmail.com>
+Tadashi Saito                           <tad.a.digger@gmail.com> <tadd@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tadf
+Tadayoshi Funaba                        <tadf@dotrb.org>
+Tadayoshi Funaba                        <tadf@dotrb.org> <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# takano32
+TAKANO Mitsuhiro                        <takano32@gmail.com>
+TAKANO Mitsuhiro                        <takano32@gmail.com> <takano32@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tarui
+Masaya Tarui                            <tarui@ruby-lang.org>
+Masaya Tarui                            <tarui@ruby-lang.org> <tarui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# technorama
+Technorama Ltd.                         <oss-ruby@technorama.net>
+Technorama Ltd.                         <oss-ruby@technorama.net> <technorama@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tenderlove
+Aaron Patterson                         <tenderlove@ruby-lang.org>
+Aaron Patterson                         <tenderlove@ruby-lang.org> <tenderlove@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# tmm1
+Aman Gupta                              <ruby@tmm1.net>
+Aman Gupta                              <ruby@tmm1.net> <tmm1@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ts
+Guy Decoux                              <ts@moulon.inra.fr>
+Guy Decoux                              <ts@moulon.inra.fr> <ts@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# ttate
+Takaaki Tateishi                        <ttate@ttsky.net>
+## Takaaki Tateishi                     <ttate@ttsky.net> <ttate@kt.jaist.ac.jp>
+Takaaki Tateishi                        <ttate@ttsky.net> <ttate@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# uema2
+Takaaki Uematsu                         <uema2x@jcom.home.ne.jp>
+Takaaki Uematsu                         <uema2x@jcom.home.ne.jp> <uema2@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# usa
+U.Nakamura                              <usa@ruby-lang.org>
+U.Nakamura                              <usa@ruby-lang.org> <usa@garbagecollect.jp>
+U.Nakamura                              <usa@ruby-lang.org> <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wakou
+Wakou Aoyama                            <wakou@ruby-lang.org>
+Wakou Aoyama                            <wakou@ruby-lang.org> <wakou@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wanabe
+wanabe                                  <s.wanabe@gmail.com>
+wanabe                                  <s.wanabe@gmail.com> <wanabe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# watson1978
+Watson                                  <watson1978@gmail.com>
+Watson                                  <watson1978@gmail.com> <watson1978@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# wew
+William Webber                          <william@williamwebber.com>
+William Webber                          <william@williamwebber.com> <wew@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# why
+why the lucky stiff                     <why@ruby-lang.org>
+why the lucky stiff                     <why@ruby-lang.org> <why@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# xibbar
+Takeyuki FUJIOKA                        <xibbar@ruby-lang.org>
+Takeyuki FUJIOKA                        <xibbar@ruby-lang.org> <xibbar@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yugui
+Yuki Yugui Sonoda                       <yugui@yugui.jp>
+Yuki Yugui Sonoda                       <yugui@yugui.jp> <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yui-knk
+yui-knk                                 <spiketeika@gmail.com>
+yui-knk                                 <spiketeika@gmail.com> <yui-knk@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# yuki
+Yuki Nishijima                          <yuki24@hey.com>
+Yuki Nishijima                          <yuki24@hey.com> <mail@yukinishijima.net>
+Yuki Nishijima                          <yuki24@hey.com> <yuki@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# zsombor
+Dee Zsombor                             <zsombor@ruby-lang.org>
+Dee Zsombor                             <zsombor@ruby-lang.org> <zsombor@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
+
+# zzak
+zzak                                    <zzakscott@gmail.com>
+zzak                                    <zzakscott@gmail.com> <zzak@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
diff --git a/.rdoc_options b/.rdoc_options
new file mode 100644
index 0000000000..89265cafd4
--- /dev/null
+++ b/.rdoc_options
@@ -0,0 +1,39 @@
+---
+page_dir: doc
+charset: UTF-8
+encoding: UTF-8
+main_page: index.md
+title: Documentation for Ruby development version
+visibility: :private
+rdoc_include:
+- doc
+
+exclude:
+- \.gemspec\z
+- lib/set/subclass_compatible.rb
+
+autolink_excluded_words:
+- Box
+- Class
+- Method
+- Module
+- Process
+- RDoc
+- Ruby
+- Set
+- ZJIT
+- YJIT
+
+canonical_root: https://docs.ruby-lang.org/en/master
+
+footer_content:
+  Ruby:
+    Documentation: index.html
+    Official Website: https://www.ruby-lang.org/
+    Playground: https://ruby.github.io/play-ruby/
+  Resources:
+    GitHub: https://github.com/ruby/ruby
+    Issue Tracker: https://bugs.ruby-lang.org/projects/ruby-master/issues
+    RubyGems: https://rubygems.org/
+  Community:
+    X: https://x.com/rubylangorg
diff --git a/.rspec_parallel b/.rspec_parallel
new file mode 100644
index 0000000000..aaff198a32
--- /dev/null
+++ b/.rspec_parallel
@@ -0,0 +1,2 @@
+--format progress
+--format ParallelTests::RSpec::RuntimeLogger --out tmp/parallel_runtime_rspec.log
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index db25c9eb08..0000000000
--- a/.travis.yml
+++ /dev/null
@@ -1,71 +0,0 @@
-# Copyright (C) 2011 Urabe, Shyouhei.  All rights reserved.
-#
-# This file is  a part of the programming language  Ruby.  Permission is hereby
-# granted,  to either  redistribute  or  modify this  file,  provided that  the
-# conditions  mentioned in  the file  COPYING are  met.  Consult  the  file for
-# details.
-
-# This is  a Travis-CI  build configuration file.   The list  of configurations
-# available is located in
-#
-#     http://about.travis-ci.org/docs/user/build-configuration/
-#
-# and as Ruby itself is a project written in C language,
-#
-#     http://about.travis-ci.org/docs/user/languages/c/
-#
-# is also a good place to look at.
-
-# Language specification.
-language: c
-
-# Compilers.  Several  compilers are  provided in Travis,  so we try  them all.
-# The value set here is visible via $CC environment variable.
-compiler:
-  - gcc
-  - clang
-
-# Dependencies.  Some  header files are missing  in a Travis' worker  VM, so we
-# have  to install  them.  The  "1.9.1" here  is OK.   It is  the  most adopted
-# version string  for Debian/Ubuntu, and  no dependencies have been  changed so
-# far since the 1.9.1 release.
-before_install:
-  - "sudo apt-get -qq update"
-  - "sudo apt-get -qq install $CC" # upgrade if any
-install: "sudo apt-get -qq build-dep ruby1.9.1 2>/dev/null"
-
-# Script is where the test runs.  Note  we just do "make test", not other tests
-# like  test-all, test-rubyspec.   This is  because  they take  too much  time,
-# enough for Travis to shut down the VM as being stalled.
-before_script:
-  - "autoconf"
-  - "./configure --with-gcc=$CC"
-  - "make -sj encs"
-  - "make -sj exts"
-script: "make test OPTS=-v"
-
-# Branch matrix.  Not all branches are Travis-ready so we limit branches here.
-branches:
-  only:
-    - trunk
-    - ruby_1_9_3
-
-# We want to be notified when something happens.
-notifications:
-  irc:
-    channels:
-      - "irc.freenode.org#ruby-core"
-      - "irc.freenode.org#ruby-ja"
-    on_success: change # [always|never|change] # default: always
-    on_failure: change # [always|never|change] # default: always
-    template:
-      - "%{message} by @%{author}: See %{build_url}"
-
-# Local Variables:
-# mode: YAML
-# coding: utf-8-unix
-# indent-tabs-mode: nil
-# tab-width: 4
-# fill-column: 79
-# default-justification: full
-# End:
diff --git a/BSDL b/BSDL
index a009caefea..66d93598aa 100644
--- a/BSDL
+++ b/BSDL
@@ -4,10 +4,10 @@ Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions
 are met:
 1. Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
+   notice, this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
 
 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000000..35e79dd3b9
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1 @@
+See ["Contributing to Ruby"](https://docs.ruby-lang.org/en/master/contributing/contributing_md.html), which includes setup and build instructions.
diff --git a/COPYING b/COPYING
index a1f19ff99d..428ce03ed7 100644
--- a/COPYING
+++ b/COPYING
@@ -1,56 +1,58 @@
+{日本語}[rdoc-ref:COPYING.ja]
+
 Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.jp>.
 You can redistribute it and/or modify it under either the terms of the
 2-clause BSDL (see the file BSDL), or the conditions below:
 
-  1. You may make and give away verbatim copies of the source form of the
-     software without restriction, provided that you duplicate all of the
-     original copyright notices and associated disclaimers.
+1. You may make and give away verbatim copies of the source form of the
+   software without restriction, provided that you duplicate all of the
+   original copyright notices and associated disclaimers.
 
-  2. You may modify your copy of the software in any way, provided that
-     you do at least ONE of the following:
+2. You may modify your copy of the software in any way, provided that
+   you do at least ONE of the following:
 
-       a) place your modifications in the Public Domain or otherwise
-          make them Freely Available, such as by posting said
-	  modifications to Usenet or an equivalent medium, or by allowing
-	  the author to include your modifications in the software.
+   a. place your modifications in the Public Domain or otherwise
+      make them Freely Available, such as by posting said
+      modifications to Usenet or an equivalent medium, or by allowing
+      the author to include your modifications in the software.
 
-       b) use the modified software only within your corporation or
-          organization.
+   b. use the modified software only within your corporation or
+      organization.
 
-       c) give non-standard binaries non-standard names, with
-          instructions on where to get the original software distribution.
+   c. give non-standard binaries non-standard names, with
+      instructions on where to get the original software distribution.
 
-       d) make other distribution arrangements with the author.
+   d. make other distribution arrangements with the author.
 
-  3. You may distribute the software in object code or binary form,
-     provided that you do at least ONE of the following:
+3. You may distribute the software in object code or binary form,
+   provided that you do at least ONE of the following:
 
-       a) distribute the binaries and library files of the software,
-	  together with instructions (in the manual page or equivalent)
-	  on where to get the original distribution.
+   a. distribute the binaries and library files of the software,
+      together with instructions (in the manual page or equivalent)
+      on where to get the original distribution.
 
-       b) accompany the distribution with the machine-readable source of
-	  the software.
+   b. accompany the distribution with the machine-readable source of
+      the software.
 
-       c) give non-standard binaries non-standard names, with
-          instructions on where to get the original software distribution.
+   c. give non-standard binaries non-standard names, with
+      instructions on where to get the original software distribution.
 
-       d) make other distribution arrangements with the author.
+   d. make other distribution arrangements with the author.
 
-  4. You may modify and include the part of the software into any other
-     software (possibly commercial).  But some files in the distribution
-     are not written by the author, so that they are not under these terms.
+4. You may modify and include the part of the software into any other
+   software (possibly commercial).  But some files in the distribution
+   are not written by the author, so that they are not under these terms.
 
-     For the list of those files and their copying conditions, see the
-     file LEGAL.
+   For the list of those files and their copying conditions, see the
+   file LEGAL.
 
-  5. The scripts and library files supplied as input to or produced as 
-     output from the software do not automatically fall under the
-     copyright of the software, but belong to whomever generated them, 
-     and may be sold commercially, and may be aggregated with this
-     software.
+5. The scripts and library files supplied as input to or produced as
+   output from the software do not automatically fall under the
+   copyright of the software, but belong to whomever generated them,
+   and may be sold commercially, and may be aggregated with this
+   software.
 
-  6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
-     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-     PURPOSE.
+6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+   PURPOSE.
diff --git a/COPYING.ja b/COPYING.ja
index e50d01c8d1..5de2dbcc8f 100644
--- a/COPYING.ja
+++ b/COPYING.ja
@@ -1,51 +1,53 @@
+{English}[rdoc-ref:COPYING]
+
 本プログラムはフリーソフトウェアです．2-clause BSDL
 または以下に示す条件で本プログラムを再配布できます
 2-clause BSDLについてはBSDLファイルを参照して下さい．
 
-  1. 複製は制限なく自由です．
+1. 複製は制限なく自由です．
 
-  2. 以下の条件のいずれかを満たす時に本プログラムのソースを
-     自由に変更できます．
+2. 以下の条件のいずれかを満たす時に本プログラムのソースを
+   自由に変更できます．
 
-     (a) ネットニューズにポストしたり，作者に変更を送付する
-         などの方法で，変更を公開する．
+   a.  ネットニューズにポストしたり，作者に変更を送付する
+       などの方法で，変更を公開する．
 
-     (b) 変更した本プログラムを自分の所属する組織内部だけで
-         使う．
+   b.  変更した本プログラムを自分の所属する組織内部だけで
+       使う．
 
-     (c) 変更点を明示したうえ，ソフトウェアの名前を変更する．
-         そのソフトウェアを配布する時には変更前の本プログラ
-         ムも同時に配布する．または変更前の本プログラムのソー
-         スの入手法を明示する．
+   c.  変更点を明示したうえ，ソフトウェアの名前を変更する．
+       そのソフトウェアを配布する時には変更前の本プログラ
+       ムも同時に配布する．または変更前の本プログラムのソー
+       スの入手法を明示する．
 
-     (d) その他の変更条件を作者と合意する．
+   d.  その他の変更条件を作者と合意する．
 
-  3. 以下の条件のいずれかを満たす時に本プログラムをコンパイ
-     ルしたオブジェクトコードや実行形式でも配布できます．
+3. 以下の条件のいずれかを満たす時に本プログラムをコンパイ
+   ルしたオブジェクトコードや実行形式でも配布できます．
 
-     (a) バイナリを受け取った人がソースを入手できるように，
-         ソースの入手法を明示する．
+   a.  バイナリを受け取った人がソースを入手できるように，
+       ソースの入手法を明示する．
 
-     (b) 機械可読なソースコードを添付する．
+   b.  機械可読なソースコードを添付する．
 
-     (c) 変更を行ったバイナリは名前を変更したうえ，オリジナ
-         ルのソースコードの入手法を明示する．
+   c.  変更を行ったバイナリは名前を変更したうえ，オリジナ
+       ルのソースコードの入手法を明示する．
 
-     (d) その他の配布条件を作者と合意する．
+   d.  その他の配布条件を作者と合意する．
 
-  4. 他のプログラムへの引用はいかなる目的であれ自由です．た
-     だし，本プログラムに含まれる他の作者によるコードは，そ
-     れぞれの作者の意向による制限が加えられる場合があります．
+4. 他のプログラムへの引用はいかなる目的であれ自由です．た
+   だし，本プログラムに含まれる他の作者によるコードは，そ
+   れぞれの作者の意向による制限が加えられる場合があります．
 
-     それらファイルの一覧とそれぞれの配布条件などに付いては
-     LEGALファイルを参照してください．
+   それらファイルの一覧とそれぞれの配布条件などに付いては
+   LEGALファイルを参照してください．
 
-  5. 本プログラムへの入力となるスクリプトおよび，本プログラ
-     ムからの出力の権利は本プログラムの作者ではなく，それぞ
-     れの入出力を生成した人に属します．また，本プログラムに
-     組み込まれるための拡張ライブラリについても同様です．
+5. 本プログラムへの入力となるスクリプトおよび，本プログラ
+   ムからの出力の権利は本プログラムの作者ではなく，それぞ
+   れの入出力を生成した人に属します．また，本プログラムに
+   組み込まれるための拡張ライブラリについても同様です．
 
-  6. 本プログラムは無保証です．作者は本プログラムをサポート
-     する意志はありますが，プログラム自身のバグあるいは本プ
-     ログラムの実行などから発生するいかなる損害に対しても責
-     任を持ちません．
+6. 本プログラムは無保証です．作者は本プログラムをサポート
+   する意志はありますが，プログラム自身のバグあるいは本プ
+   ログラムの実行などから発生するいかなる損害に対しても責
+   任を持ちません．
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000000..9a4b2ebbba
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,193 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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+
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+ "similar",
+]
+
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+
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+
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+ "yjit",
+ "zjit",
+]
+
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+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
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+
+[[package]]
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+[[package]]
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+checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
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+
+[[package]]
+name = "yjit"
+version = "0.1.0"
+dependencies = [
+ "capstone",
+ "jit",
+]
+
+[[package]]
+name = "zjit"
+version = "0.0.1"
+dependencies = [
+ "capstone",
+ "insta",
+ "jit",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000000..521129d92d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,60 @@
+# This is the root Cargo [workspace](https://doc.rust-lang.org/cargo/reference/workspaces.html)
+# and the root package for all the rust code that are statically linked into ruby. Rust tooling
+# limitations means all Rust code need to share a single archive library (staticlib) at the
+# integration point with non-rust code. (See rustlang/rust#44322 and #104707 for a taste of
+# the linking challenges.)
+#
+# Do not add required dependencies. This is a policy that helps downstream consumers and give
+# us tight control over what we ship. All of the optional dependencies are used exclusively
+# during development.
+#
+# Release builds avoid Cargo entirely because offline builds can fail even when none of the
+# optional dependencies are built (rust-lang/cargo#10352).
+
+[workspace]
+members = ["zjit", "yjit", "jit"]
+
+[package]
+name = "ruby"
+version = "0.0.0"
+edition = "2024"
+rust-version = "1.85.0"
+publish = false # Don't publish to crates.io
+
+[dependencies]
+yjit = { path = "yjit", optional = true }
+zjit = { path = "zjit", optional = true }
+
+[lib]
+crate-type = ["staticlib"]
+path = "ruby.rs"
+
+[features]
+disasm = ["yjit?/disasm", "zjit?/disasm"]
+runtime_checks = ["yjit?/runtime_checks", "zjit?/runtime_checks"]
+yjit = [ "dep:yjit" ]
+zjit = [ "dep:zjit" ]
+
+[profile.dev]
+opt-level = 0
+debug = true
+debug-assertions = true
+overflow-checks = true
+
+[profile.dev_nodebug]
+inherits = "dev"
+
+[profile.stats]
+inherits = "release"
+
+[profile.release]
+# NOTE: --enable-yjit and zjit builds use `rustc` without going through Cargo. You
+# might want to update the `rustc` invocation if you change this profile.
+opt-level = 3
+# The extra robustness that comes from checking for arithmetic overflow is
+# worth the performance cost for the compiler.
+overflow-checks = true
+# Generate debug info
+debug = true
+# Use ThinLTO. Much smaller output for a small amount of build time increase.
+lto = "thin"
diff --git a/ChangeLog b/ChangeLog
deleted file mode 100644
index 65075617cb..0000000000
--- a/ChangeLog
+++ /dev/null
@@ -1,28583 +0,0 @@
-Wed Dec 16 21:16:55 2015  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/fiddle/handle.c: check tainted string arguments.
-	  Patch provided by tenderlove and nobu.
-
-	* test/fiddle/test_handle.rb (class TestHandle): add test for above.
-
-Wed Dec 16 21:16:55 2015  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
-
-	* ext/dl/handle.c (rb_dlhandle_initialize): prohibits DL::dlopen
-	  with a tainted name of library.
-	  Patch by sheepman <sheepman AT sheepman.sakura.ne.jp>.
-
-	* ext/dl/handle.c (rb_dlhandle_sym): ditto
-
-Tue Aug 18 22:00:12 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
-
-	* lib/rubygems.rb: bump version to 2.0.14.1. this version fixed
-	  CVE-2015-3900.
-
-	* lib/rubygems/remote_fetcher.rb: ditto.
-
-	* test/rubygems/test_gem_remote_fetcher.rb: added testcase for CVE-2015-3900
-
-Tue Jun  2 00:10:14 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/resolv.rb (Requester#request): typo, regression introduced at
-	  r49422 (patchlevel 618).  reported and patched by Stefan Kolb
-	  [ruby-core:69429] [Backport #11204]
-
-Mon Apr 13 22:11:42 2015  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/ssl.rb: stricter hostname verification
-	  following RFC 6125. with the patch provided by Tony Arcieri and
-	  Hiroshi Nakamura [ruby-core:61545] [Bug #9644]
-	* test/openssl/test_ssl.rb: add tests for above.
-
-Tue Mar 24 16:38:14 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* spec/default.mspec: use default configuration file name.
-	  https://github.com/ruby/rubyspec/commit/cc69f337b06362e5607ffa3e3ad40ef7494960cf
-
-Tue Mar 24 16:38:14 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* spec/default.mspec: remove specific version number.
-	  https://github.com/ruby/rubyspec/commit/7a909e925c1baa9c700bd44af9241aef6e596714
-
-Tue Mar 24 16:38:14 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* common.mk: use ruby organization for rubyspec.
-
-Wed Feb 25 17:30:10 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* class.c (clone_method): fixed missing assignment introduced by
-	  previous commit.
-
-	* vm_insnhelper.c (rb_vm_rewrite_cref_stack): ditto.
-
-Wed Feb 25 15:07:01 2015  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* vm_insnhelper.c (rb_vm_rewrite_cref_stack): copy nd_refinements
-	  of original crefs. It fixes segmentation fault when calling
-	  refined method in duplicate module. [ruby-dev:48878] [Bug #10885]
-
-	* vm_core.h, class.c: change accordingly.
-
-	* test/ruby/test_refinement.rb: add a test for above.
-
-Wed Feb 25 14:53:27 2015  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* class.c (method_entry_i, class_instance_method_list,
-	  rb_obj_singleton_methods): should not include methods of
-	  superclasses if recur is false. [ruby-dev:48854] [Bug #10826]
-
-Wed Feb 25 14:53:27 2015  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_method.c (remove_method): When remove refined
-	  method, raise a NameError if the method is not
-	  defined in refined class.
-	
-	  But if the method is defined in refined class,
-	  it should keep refined method and remove original
-	  method.
-	  
-	  Patch by Seiei Higa. [ruby-core:67722] [Bug #10765]
-
-Wed Feb 25 14:41:01 2015  Seiei Higa  <hanachin@gmail.com>
-
-	* vm_method.c (check_definition): Module#public_method_defined?,
-	  Module#private_method_defined?, Module#protected_method_defined?
-	  should not use refinements. [ruby-core:67656] [Bug #10753]
-
-Wed Feb 25 14:29:19 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/sdbm/_sdbm.c: include ruby/ruby.h for PRIdPTRDIFF when a
-	  macro `DEBUG` is defined.  based on the patch by Owen Rodley in
-	  [ruby-core:67987]. [Bug #10825]
-
-Wed Feb 25 14:22:57 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (try_cppflags, try_cflags, try_ldflags): get rid of
-	  interference by modifying global variables in have_devel? method.
-	  [ruby-core:67962] [Bug #10821]
-
-Wed Feb 25 14:19:35 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* thread.c: Improve documentation for Thread#value
-	  [Bug #10694][ruby-core:67324][ci skip]
-
-Wed Feb 25 14:18:26 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* string.c: [DOC] Add missing documentation around String#chomp.
-	  Patchby @stderr [ci skip][fix GH-780]
-
-Sat Feb 21 09:48:48 2015  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic.build):
-	  use hostname= to detect and wrap IPv6 hosts.
-	  Build is accepting URI components and users may not expect
-	  that a host component needs to be wrapped with square brackets
-	  since it's not providing a URI.
-	  Note: initialize with arg_check => true does not wrap IPv6 hosts.
-	  by Joe Rafaniello <jrafanie@redhat.com>
-	  https://github.com/ruby/ruby/pull/765 fix GH-765
-
-	* test/uri/test_generic.rb: Add more tests
-
-Wed Feb 18 16:02:30 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS::Resource#==, #hash): elements
-	  returned by Kernel#instance_variables are Symbols now.
-	  [ruby-core:68128] [Bug #10857]
-
-Tue Feb 17 17:37:14 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/socket/getaddrinfo.c (get_addr): reject too long hostname to
-	  get rid of GHOST vulnerability on very old platforms.
-
-	* ext/socket/raddrinfo.c (make_hostent_internal): ditto, paranoic
-	  check for the canonical name.
-
-Fri Jan 30 16:49:15 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c: [DOC] Revise documentation by Marcus Stollsteimer at
-	  [ruby-core:66368].  [Bug #10526]
-
-	  * #inspect: be more specific about generated string, remove
-	    obsolete example.
-	  * #nil?: use code examples instead of different call-seq's.
-	  * #tap: clarify what is yielded.
-	  * Integer(): be more specific about to_int and to_i, remove
-	    reference to Ruby 1.8.
-	  * Array(): fix error.
-	  * Class: fix variable name style and indentation in example.
-	  * improve consistency, fix typos and formatting.
-
-Fri Jan 30 16:49:15 2015  Benoit Daloze  <eregontp@gmail.com>
-
-	* object.c (Module#const_defined?): [DOC] Revise the documentation.
-	  Patch by Xavier Noria.
-	  [Fixes GH-754] https://github.com/ruby/ruby/pull/754
-
-Fri Jan 30 16:49:15 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* object.c: fix document of Kernel.Stirng by @suzukaze
-	  [fix GH-743][ci skip]
-
-Fri Jan 30 16:26:57 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* pack.c (str_associate, str_associated): keep associated objects
-	  in an instance variables, instead of in the internal structure.
-
-Fri Jan 30 16:11:47 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/rdoc/text.rb (expand_tabs): get rid of infinite loop with
-	  CR.  should check if substitution occurred too.
-	  [ruby-dev:48813] [Bug #10732]
-
-Fri Jan 30 16:00:35 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (install_dirs): revert DESTDIR prefix by r39841, since
-	  it is fixed by r41648.  [ruby-core:55760] [Bug #8115]
-
-Fri Jan 30 15:47:49 2015  Eric Wong  <e@80x24.org>
-
-	* numeric.c (bit_coerce): use original value for error message
-	  [ruby-core:67405] [Bug #10711]
-	* test/ruby/test_numeric.rb (test_coerce): check error message
-
-Tue Jan 27 17:05:43 2015  Seiei Higa  <hanachin@gmail.com>
-
-	* vm_method.c (rb_alias): raise a NameError when creating alias to
-	  a refined method if the original method of the refined method is
-	  not defined.  [ruby-core:67523] [Bug #10731]
-
-Tue Jan 27 16:41:33 2015  Seiei Higa  <hanachin@gmail.com>
-
-	* vm_method.c (rb_export_method): bail out if the original method
-	  is undefined when the method is refined.
-	  [ruby-core:67387] [Bug #10706]
-
-Tue Jan 27 16:27:44 2015  Eric Wong  <e@80x24.org>
-
-	* lib/resolv.rb: consider ENETUNREACH as ResolvTimeout
-	  [ruby-core:67411] [Bug #10712]
-
-Thu Jan 22 18:15:41 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* ext/zlib/zlib.c: fix document of method signatures.
-	  [Bug #10668][ruby-core:67186][ci skip]
-
-Thu Jan 22 18:10:35 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* test/ruby/test_io.rb: added timeout for AIX environment.
-	  [ruby-core:62983][Bug #9917]
-
-Thu Jan 22 17:30:33 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* lib/net/http.rb (Net::HTTP#send_request): there is no response body
-	  with HEAD request. Patch by @rodrigosaito [fix GH-520]
-
-Thu Jan 22 17:30:33 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* test/net/http/test_http.rb (_test_send_request__HEAD): Added
-	  failing test for send_request with HEAD method.
-
-Wed Jan 14 16:53:14 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* ext/tk/lib/tkextlib/tcllib/plotchart.rb: fix to invoke correct function
-	  of tcllib. Patch by @zalt50 [fix GH-787]
-
-Wed Jan 14 16:48:15 2015  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Name#==): Compare an array of Label:Str
-	  objects.  Label#Str#== is case-insensitive.
-
-Wed Jan 14 16:48:15 2015  Ben Miller  <bmiller@rackspace.com>
-
-	* lib/resolv.rb (Resolv::DNS::Name#==): DNS is case-insensitive, so the
-	  comparison should be case-insensitive as well.
-	  [ruby-core:66498] [Bug #10550]
-
-Wed Jan 14 16:48:15 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::DNS::Name): names with different dots
-	  should be different.
-
-Wed Jan 14 16:30:51 2015  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http/response.rb (Net::HTTPResponse): require one or more
-	  spaces [Bug #10591].
-	  by leriksen <leif.eriksen.au@gmail.com>
-	  https://github.com/ruby/ruby/pull/782 fix GH-782
-	  NOTE: graph.facebook.com returns without SP Reason-Phrase.
-
-Wed Jan 14 16:23:49 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_cipher.c (ossl_cipher_update_long): update huge
-	  data gradually not to exceed INT_MAX.  workaround of OpenSSL API
-	  limitation.  [ruby-core:67043] [Bug #10633]
-
-Wed Jan 14 16:14:50 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_binary_elf): get rid of -e option of cat
-	  which is not available on BusyBox, use tr instead.
-	  [ruby-core:64824] [Bug #10210]
-
-Wed Jan 14 16:07:11 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* signal.c (ruby_signal): since SIGKILL is not supported by MSVCRT,
-	  should be treated before calling signal(3).
-	  [Bug #10615]
-
-Wed Jan 14 15:57:26 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (exec_recursive): use the same last method name as
-	  recursive_push in the error message when recursive_pop failed.
-	  [ruby-core:66742] [Bug #10579]
-
-Wed Jan 14 15:57:26 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_frame_last_func): return the most recent frame method
-	  name.
-
-	* thread.c (recursive_list_access): use the last method name,
-	  instead of the current method name which can be unset in some
-	  cases, not to use a symbol by the invalid ID.
-	  [ruby-core:66742] [Bug #10579]
-
-Wed Jan 14 15:54:18 2015  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* lib/resolv.rb: fall back if canonicalization fails.
-	  Thanks Vit Ondruch for the patch!  [ruby-core:65836]
-
-	* test/resolv/test_dns.rb: test for patch
-
-Fri Nov 28 16:43:20 2014  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/http.rb:  Do not attempt SSL session resumption when the
-	  session is expired.  [Bug #10533]
-
-Fri Nov 28 16:36:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (symbol_list): fix the node type of literal symbol list
-	  with no interpolation.  [ruby-core:66343]
-
-Fri Nov 28 16:28:07 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getlogin): set login name encoding properly.
-	  [ruby-core:66163] [Bug #10493]
-
-Fri Nov 28 16:18:44 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (method_proc): the receiver of binding from method should
-	  be same as the receiver of the method.
-	  [ruby-core:65917] [Bug #10432]
-
-Fri Nov 28 16:12:22 2014  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/net/http.rb (Net::HTTP.proxy_uri): use initializer instead
-	  of parser to handle IPv6 address. [Bug #9129]
-
-Fri Nov 28 16:05:09 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (copy_stream_body): should write in binary mode.  based on a
-	  patch by godfat (Lin Jen-Shin) at [ruby-core:56556].
-	  [ruby-core:56518] [Bug #8767]
-
-Fri Nov 28 16:05:09 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (copy_stream_body): move common open flags.
-
-Fri Nov 28 16:01:44 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rubygems/ssl_certs/AddTrustExternalCARoot{-2048,}.pem: add newer
-	  root CA for rubygems.org.  a part of r48389 of trunk.
-	  see also https://github.com/rubygems/rubygems/commit/98f5f44c7141881c756003e4256b1a96b200b98e .
-	  [Backport #10516] [ruby-core:66303]
-
-Wed Nov 19 10:19:36 2014  Eric Wong  <e@80x24.org>
-
-	* vm_eval.c (rb_yield_splat): add missing GC guard
-	  [Bug #10509]
-
-Thu Nov 13 22:31:50 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rexml/document.rb: add REXML::Document#document.
-	  reported by Tomas Hoger <thoger@redhat.com> and patched by nahi.
-
-Thu Nov  6 17:31:51 2014  Naohisa Goto  <ngotogenome@gmail.com>
-
-	* compile.c (compile_data_alloc): add padding when strict alignment
-	  is required for memory access. Currently, the padding is enabled
-	  only when the CPU is 32-bit SPARC and the compiler is GCC.
-	  [Bug #9681] [ruby-core:61715]
-
-	* compile.c (STRICT_ALIGNMENT): defined if strict alignment is required
-
-	* compile.c (ALIGNMENT_SIZE, ALIGNMENT_SIZE_MASK, PADDING_SIZE_MAX):
-	  new macros for alignemnt word size, bit mask, max size of padding.
-
-	* compile.c (calc_padding): new function to calculate padding size
-
-Wed Nov  5 18:26:49 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* vm_insnhelper.c (unknown_keyword_error): delete expected keywords
-	  directly from raw table, so that the given block is not called.
-	  derived from r48102 of trunk.
-	  [ruby-core:65837] [Bug #10413]
-
-Mon Oct 27 20:21:05 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* lib/rexml/entity.rb: keep the entity size within the limitation.
-	  reported by Willis Vandevanter <will@silentrobots.com> and
-	  patched by nahi.
-
-Mon Oct 27 13:26:46 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_method_entry_make): warn redefinition only for
-	  already defined methods, but not for undefined methods.
-	  [ruby-dev:48691] [Bug #10421]
-
-Thu Oct 23 18:56:55 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (DEFAULT_PARAMS): override
-	  options even if OpenSSL::SSL::OP_NO_SSLv3 is not defined.
-	  this is pointed out by Stephen Touset. [ruby-core:65711] [Bug #9424]
-
-Thu Oct 23 18:56:55 2014  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* test/openssl/test_ssl.rb: Reuse TLS default options from
-	  OpenSSL::SSL::SSLContext::DEFAULT_PARAMS.
-
-Thu Oct 23 18:56:55 2014  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* lib/openssl/ssl.rb: Explicitly whitelist the default
-	  SSL/TLS ciphers. Forbid SSLv2 and SSLv3, disable
-	  compression by default.
-	  Reported by Jeff Hodges.
-	  [ruby-core:59829] [Bug #9424]
-
-Mon Oct 20 14:41:45 2014  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* vm_core.h, vm.c, proc.c: fix GC mark miss on bindings.
-	  [ruby-dev:48616] [Bug #10368]
-
-	* test/ruby/test_eval.rb: add a test code.
-
-Fri Oct 17 13:22:17 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_here_document): do not append already appended
-	  and disposed code fragment.  [ruby-dev:48647] [Bug #10392]
-
-Fri Oct 17 13:19:44 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): ASCII-8BIT StringIO
-	  should be writable any encoding strings, without conversion.
-	  [ruby-core:65240] [Bug #10285]
-
-Fri Oct 17 13:10:08 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (eval_string_with_cref): fix super from eval with
-	  scope.  set klass in the current control frame to the class of
-	  the receiver in the context to be evaluated, this class/module
-	  must match the actual receiver to call super.
-	  [ruby-core:65122] [Bug #10263]
-
-Thu Oct 16 16:33:51 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regcomp.c, regexec.c: Optimization should be disabled not only for
-	  /(?<=x).*/ but also for /(?!x).*/.
-	  (merge r47598 partially. [Bug #9728])
-
-Thu Oct 16 16:23:03 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* lib/fileutils.rb: handle ENOENT error with symlink targeted to
-	  non-exists file. [ruby-dev:45933] [Bug #6716]
-
-Wed Oct 15 16:23:22 2014  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_time_tz.rb: Fix test error with tzdata-2014g.
-	  [ruby-core:65058] [Bug #10245] Reported by Vit Ondruch.
-
-Wed Oct 15 16:23:22 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* test/minitest/test_minitest_unit.rb: removed obsoleted condition
-	  for Ruby 1.8.
-	* test/ruby/test_time_tz.rb: ditto.
-
-Wed Oct 15 16:19:39 2014  Eric Wong  <e@80x24.org>
-
-	* array.c (ary_recycle_hash): add RB_GC_GUARD
-	  (rb_ary_diff): remove volatile
-	  [Bug #10369]
-
-Wed Oct 15 16:13:28 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (dir_s_aref): fix rdoc.  `Dir.glob` allows an array but
-	  `Dir[]` not.  the former accepts an optional parameter `flags`,
-	  while the latter accepts arbitrary number of arguments but no
-	  `flags`.  [ruby-core:65265] [Bug #10294]
-
-Wed Oct 15 16:12:11 2014  Rei Odaira  <Rei.Odaira@gmail.com>
-
-	* configure.in: Fix typo. [Bug #9914]
-
-Wed Oct 15 16:05:47 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* error.c: update exception tree. [DOC]
-	  reported by @hemge via twitter.
-
-Wed Oct 15 15:57:48 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (VCSUP): nothing to do if this worktree is not
-	  under any VCS (it means that the worktree may be from the release
-	  package).
-
-Wed Oct 15 15:35:39 2014  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* ext/pathname/pathname.c (path_inspect): use PRIsVALUE to preserve
-	  the result encoding.
-
-Wed Sep 17 15:09:16 2014  Natalie Weizenbaum  <nweiz@google.com>
-
-	* ext/pathname/lib/pathname.rb (SAME_PATHS):
-	  Pathname#relative_path_from uses String#casecmp to compare strings
-	  on case-insensitive filesystem platforms (e.g., Windows). This can
-	  return nil for strings with different encodings, and the code
-	  previously assumed that it always returned a Fixnum.  [Fix GH-713]
-
-Wed Sep 17 15:07:35 2014  Sho Hashimoto  <sho.hsmt@gmail.com>
-
-	* ext/fiddle/lib/fiddle/import.rb (Fiddle::Importer#sizeof): fix typo,
-	  SIZEOF_LONG_LON.  [Fix GH-714]
-
-Wed Sep 17 14:58:50 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (MakeMakefile#pkg_config): append --cflags to also
-	  $CXXFLAGS, as they are often used by C++ compiler.
-	  [ruby-core:54532] [Bug #8315]
-
-Wed Sep 17 14:58:50 2014  Shota Fukumori  <her@sorah.jp>
-
-	* lib/mkmf.rb (configuration): Make CXXFLAGS customizable.
-	  Patch by Kohei Suzuki (eagletmt). [Fixes GH-492]
-
-Wed Sep 17 14:52:38 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/csv.rb (CSV#<<): honor explicitly given encoding.  based on
-	  the patch by DAISUKE TANIWAKI <daisuketaniwaki AT gmail.com> at
-	  [ruby-core:62113].  [Bug #9766]
-
-Fri Sep 12 11:34:39 2014  Koichi Sasada  <ko1@atdot.net>
-
-	* test/ruby/test_object.rb: extend timeout.
-
-Fri Sep 12 11:34:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_obj_copy_ivar): allocate no memory for empty
-	  instance variables.  [ruby-core:64700] [Bug #10191]
-
-Fri Sep 12 11:34:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* object.c (rb_obj_copy_ivar): extract function to copy instance
-	  variables only for T_OBJECT from init_copy.
-
-Fri Sep 12 11:30:50 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* regcomp.c: Merge Onigmo 988517a4f16f14acbd7cc9d5b51a096d5153992c.
-	  [Bug #9344].
-
-Fri Sep 12 11:22:55 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (Doxyfile): revert r43888, not to require preinstalled
-	  ruby.  [ruby-core:64488] [Bug #10161]
-
-Fri Sep 12 11:15:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_reopen): create a new, temporary FD via rb_sysopen and
-	  call rb_cloexec_dup2 on it to atomically replace the file fptr->fd
-	  points to.  This leaves no possible window where fptr->fd is invalid
-	  to userspace (even for any threads running w/o GVL).  based on the
-	  patch by Eric Wong <normalperson@yhbt.net> at [ruby-core:57943].
-	  [Bug #9036]
-
-Wed Sep 10 12:34:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_close): ignore only "closed stream" IOError and
-	  NoMethodError, do not swallow other exceptions at the end of
-	  block.  [ruby-core:64463] [Bug #10153]
-
-Wed Sep 10 12:27:08 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enc/trans/euckr-tbl.rb (EUCKR_TO_UCS_TBL): add missing euro and
-	  registered signs.  [ruby-core:64452] [Bug #10149]
-
-Wed Sep 10 12:25:24 2014  Eric Wong  <e@80x24.org>
-
-	* time.c (time_timespec): fix tv_nsec overflow
-	  [Bug #10144]
-
-Wed Sep 10 12:21:51 2014  Eric Wong  <e@80x24.org>
-
-	* ext/zlib/zlib.c (gzfile_reset): preserve ZSTREAM_FLAG_GZFILE
-	  [Bug #10101]
-
-	* test/zlib/test_zlib.rb (test_rewind): test each_byte
-
-Wed Sep 10 12:06:27 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_initialize): [DOC] fix rdoc of append mode.  it does
-	  not move the pointer at open.  [ruby-core:63747] [Bug #10039]
-
-Wed Sep 10 11:50:26 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (GETASTER): should not use the numbered argument to be
-	  formatted, raise ArgumentError instead.
-	  [ruby-dev:48330] [Bug #9982]
-
-Wed Sep 10 11:43:55 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* test/openssl/test_pkey_rsa.rb (OpenSSL#test_sign_verify_memory_leak):
-	  added timeout into testcase for low performance environment.
-	  [Bug #9984][ruby-core:63367]
-
-Wed Sep 10 11:39:54 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_aset, env_has_key, env_assoc, env_has_value),
-	  (env_rassoc, env_key): prohibit tainted strings if $SAFE is
-	  non-zero.  [Bug #9976]
-
-Sat Sep  6 09:10:45 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/rdoc/generator/template/darkfish/js/jquery.js: Backport
-	  rdoc/rdoc@74f60fcb04fee1778fe2694d1a0ea6513f8e67b7
-
-Fri Sep  5 14:08:00 2014  Masaki Suketa <masaki.suketa@nifty.ne.jp>
-
-	* ext/win32ole/win32ole.c (ole_create_dcom): use the converted
-	  result if the argument can be converted to a string, to get rid
-	  of invalid access. Thanks to nobu. [ruby-dev:48467] [Bug #10127]
-
-Fri Sep  5 14:00:33 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (open): use UTF-8 version function to support
-	  non-ascii path properly.  [ruby-core:63185] [Bug #9946]
-
-Fri Sep  5 13:53:41 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): fix invalid char in eval, should raise
-	  an syntax error too, as well as directly coded.
-	  [ruby-core:64243] [Bug #10117]
-
-Fri Sep  5 13:51:10 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yyerror): preserve source code encoding in
-	  syntax error messages.  [ruby-core:64228] [Bug #10114]
-
-Fri Sep  5 13:44:53 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_count): fix wrong single-byte optimization.
-	  7bit ascii can be a trailing byte in Shift_JIS.
-	  [ruby-dev:48442] [Bug #10078]
-
-Fri Sep  5 13:36:12 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	merge r46831 partially.  these changes are from:
-	https://github.com/k-takata/Onigmo/commit/7abd7b29481f98eb92be786e3d33611fc7d000a0
-	[Bug #8716]
-
-	* include/ruby/oniguruma.h (ONIG_MAX_CAPTURE_GROUP_NUM,
-	  ONIGERR_TOO_MANY_CAPTURE_GROUPS): add cheking the number of capture
-	  groups.
-
-	* regerror.c (onig_error_code_to_format): ditto.
-
-	* regparse.c (scan_env_add_mem_entry): ditto.
-
-	* regexec.c (onig_region_copy, match_at): fix: segmation fault occurs
-	  when many groups are used.
-
-Fri Sep  5 13:06:53 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): update capa only when buffer get
-	  reallocated.
-	  http://d.hatena.ne.jp/nagachika/20140613/ruby_trunk_changes_46413_46420#r46413
-
-Fri Sep  5 13:06:53 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_resize): should consider the capacity instead
-	  of the old length, as pointed out by nagachika.
-
-Fri Sep  5 13:06:53 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (expand_path): shrink expanded path which no longer needs
-	  rooms to append.  [ruby-core:63114] [Bug #9934]
-
-Wed Sep  3 13:42:24 2014  Mark Lorenz  <mlorenz@covermymeds.com>
-
-	* lib/erb.rb (result): [DOC] no longer accepts a Proc, as
-	  Kernel.eval does not.  [fix GH-619]
-
-Wed Sep  3 13:23:29 2014  Tanaka Akira  <akr@fsij.org>
-
-	* io.c (rb_io_autoclose_p): Don't raise on frozen IO.
-
-	* test/lib/minitest/unit.rb: IO#autoclose? may raise IOError.
-
-Wed Sep  3 13:23:29 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_fileno, rb_io_inspect): non-modification does not
-	  error on frozen IO.  [ruby-dev:48241] [Bug #9865]
-
-Wed Sep  3 13:17:38 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (posix_fadvise): disable use of posix_fadvise
-	  itself on 32-bit AIX.  [ruby-core:62968] [Bug #9914]
-
-Wed Sep  3 13:17:38 2014    <kanemoto@ruby-lang.org>
-
-	* io.c (rb_io_advise): AIX currently does not support a 32-bit call to
-	  posix_fadvise() if _LARGE_FILES is defined. Patch by Rei Odaira.
-	  [ruby-core:62968] [Bug #9914]
-
-Wed Sep  3 12:48:14 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_write): use rb_str_append to
-	  reuse coderange bits other than ASCII-8BIT, and keep
-	  taintedness.  [ruby-dev:48118] [Bug #9769]
-
-Wed Sep  3 12:41:35 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_shift): fix memory leak on Windows, free environment
-	  strings block always.  [ruby-dev:48332] [Bug #9983]
-
-Wed Sep  3 12:41:35 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (env_select): fix memory leak and crash on Windows, make
-	  keys array first instead of iterating on environ directly.
-	  [ruby-dev:48325] [Bug #9978]
-
-Wed Sep  3 12:41:35 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (ruby_setenv): fix memory leak on Windows, free
-	  environment strings block after check for the size.
-	  [ruby-dev:48323] [Bug #9977]
-
-Wed Sep  3 12:24:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (match_aref, rb_reg_regsub): consider encoding of captured
-	  names, encoding-incompatible should not match.
-	  [ruby-dev:48278] [Bug #9903]
-
-Wed Sep  3 12:24:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (ruby__sfvextra): add QUOTE flag to escape unprintable
-	  characters.
-
-Wed Sep  3 12:24:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* sprintf.c (ruby__sfvextra): add QUOTE flag to escape unprintable
-	  characters.
-
-Sun Aug 31 16:59:45 2014  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_eval.c (rb_catch_protect): fix same problem of [Bug #9961].
-
-	* vm_eval.c (rb_iterate): ditto.
-
-Sun Aug 31 16:59:45 2014  Koichi Sasada  <ko1@atdot.net>
-
-	* vm.c (rb_vm_rewind_cfp): add new function to rewind specified cfp
-	  with invoking RUBY_EVENT_C_RETURN.
-	  [Bug #9961]
-
-	* vm_core.h: ditto.
-
-	* eval.c (rb_protect): use it.
-
-	* eval.c (rb_rescue2): ditto.
-
-	* vm_eval.c (rb_iterate): ditto.
-
-	* test/ruby/test_settracefunc.rb: add a test.
-
-	* vm_core.h (rb_name_err_mesg_new): 
-
-Sun Aug 31 16:50:06 2014  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (rb_iseq_compile_node): put start label of block after
-	  trace (b_call).
-	  [Bug #9964]
-
-	* test/ruby/test_settracefunc.rb: add a test.
-
-	  added assert_consistent_call_return() method check call/return
-	  consistency.
-
-Sun Aug 31 16:38:26 2014  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_core.h: add VM_FRAME_MAGIC_RESCUE to recognize normal block or
-	  rescue clause.
-
-	* vm.c (vm_exec): use VM_FRAME_MAGIC_RESCUE on at rescue/ensure.
-
-	* test/ruby/test_settracefunc.rb: should not invoke b_return at rescue
-	  clause.
-	  [Bug #9957]
-
-	* vm_dump.c (control_frame_dump): check VM_FRAME_MAGIC_RESCUE.
-
-	* vm_dump.c (vm_stack_dump_each): ditto.
-
-Sun Aug 31 16:32:10 2014  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
-
-	* lib/test/unit/parallel.rb: fix test-all parallel failure if a test
-	  is skipped after raise.
-	  DL::TestFunc#test_sinf is skipped after raise on mingw ruby.
-	  But it causes Marshal.load failure due to undefined class/module
-	  DL::DLError when doing test-all parallel and test-all doesn't
-	  complete. We create new MiniTest::Skip object to avoid Marshal.load
-	  failure.
-	  [ruby-core:62133] [Bug #9767]
-
-	* test/testunit/test_parallel.rb (TestParallel): add a test.
-
-	* test/testunit/tests_for_parallel/ptest_forth.rb: ditto.
-
-Sun Aug 31 16:24:54 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/pathname/lib/pathname.rb (cleanpath_aggressive): make all
-	  separators File::SEPARATOR from File::ALT_SEPARATOR.
-	  Reported by Daniel Rikowski.
-	  Fixed by Nobuyoshi Nakada.  [Bug #9618]
-
-	* ext/pathname/lib/pathname.rb (cleanpath_conservative): ditto.
-
-Sun Aug 31 16:23:41 2014  Naohisa Goto  <ngotogenome@gmail.com>
-
-	* lib/fileutils.rb (rmdir): rescue Errno::EEXIST in addition to
-	  ENOTEMPTY (and ENOENT), because SUSv3 describes that "If the
-	  directory is not an empty directory, rmdir() shall fail and set
-	  errno to [EEXIST] or [ENOTEMPTY]" and Solaris uses EEXIST.
-	  [Bug #9571] [ruby-dev:48017]
-
-Sun Aug 31 16:20:14 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (bind_random_port): Rescue EPERM for FreeBSD which
-	  security.mac.portacl.port_high is changed.
-	  See mac_portacl(4) for details.
-	  Reported by Jakub Szafranski.  [ruby-core:60917] [Bug #9544]
-
-Sun Aug 31 16:16:24 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* re.c (match_aref): should not ignore name after NUL byte.
-	  [ruby-dev:48275] [Bug #9902]
-
-Sun Aug 31 16:10:30 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/digest/digest.c (rb_digest_instance_equal): no need to call
-	  `to_s` twice.  [Bug #9913]
-
-Sun Aug 31 16:10:30 2014  Benoit Daloze  <eregontp@gmail.com>
-
-	* ext/digest/digest.c (rb_digest_instance_equal):
-	  fix #== for non-string arguments. [ruby-core:62967] [Bug #9913]
-
-	* test/digest/test_digest.rb: add test for above.
-
-Sun Aug 31 15:46:23 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (yield_indexed_values): extract from permute0(),
-	  rpermute0(), and rcombinate0().
-
-Sun Aug 31 15:23:25 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (rb_ary_permutation): `p` is the array of size `r`, as
-	  commented at permute0().  since `n >= r` here, buffer overflow
-	  never happened, just reduce unnecessary allocation though.
-
-Mon Jul  7 13:05:04 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* test/test_timeout.rb (test_timeout): inverted test condition.
-	  [Bug #8523]
-
-Mon Jul  7 12:57:26 2014  Masaya Tarui  <tarui@ruby-lang.org>
-
-	* st.c (st_foreach_check): change start point of search at check
-	  from top to current. [ruby-dev:48047] [Bug #9646]
-
-Mon Jul  7 12:53:45 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/gserver.rb: [DOC] Fixed typo in example by @stomar [Bug #9543]
-
-Mon Jul  7 12:52:44 2014  Zachary Scott  <e@zzak.io>
-
-	* enumerator.c: [DOC] Fix example to show Enumerator#peek behavior
-	  Patch by Erik Hollembeak [Bug #9814]
-
-Mon Jul  7 12:51:09 2014  Zachary Scott  <e@zzak.io>
-
-	* enum.c: [DOC] Use #find in example to clarify alias by @rachellogie
-	  Patch submitted via documenting-ruby/ruby#34
-
-Mon Jul  7 12:49:10 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* man/ruby.1: remove deadlink. [ruby-core:62145][Bug #9773]
-
-Mon Jul  7 12:46:28 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (not_a_member): extract name error and use same error
-	  messages.  based on the patch by Marcus Stollsteimer <sto.mar AT
-	  web.de> at [ruby-core:61721].  [Bug #9684]
-
-Mon Jul  7 12:39:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (read_all): truncate the buffer before appending read data,
-	  instead of truncating before reading.
-	  [ruby-core:55951] [Bug #8625]
-
-Mon Jul  7 12:39:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_setstrbuf, io_read): should not shorten the given buffer until
-	  read succeeds.  [ruby-core:55951] [Bug #8625]
-
-Mon Jul  7 12:16:54 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/ftp.rb (gets, readline): read lines without LF properly.
-	  [ruby-core:63205] [Bug #9949]
-
-	* test/net/ftp/test_buffered_socket.rb: related test.
-
-Mon Jul  7 12:13:09 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (body_type_1part): Gmail IMAP reports a body
-	  type as "MIXED" followed immediately by params
-	  [ruby-core:62864] [Bug #9885]
-	  Patch by @rayners (David Raynes). [Fixes GH-622] 
-	  https://github.com/ruby/ruby/pull/622
-
-Mon Jul  7 12:05:28 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (body_type_msg): should accept
-	  message/delivery-status with extra data.
-	  [ruby-core:53741] [Bug #8167]
-
-	* test/net/imap/test_imap_response_parser.rb: related test.
-
-Mon Jul  7 11:47:51 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (local_tbl_gen): remove local variables duplicated with
-	  arguments.
-
-Thu Jul  3 15:17:22 2014  Koichi Sasada  <ko1@atdot.net>
-
-	  [ruby-core:60501] [Bug #9486]
-	* vm.c (rb_vm_pop_cfunc_frame): added.  It cares c_return event.
-	  The patch base by drkaes (Stefan Kaes).
-	  [Bug #9321]
-
-	* variable.c (rb_mod_const_missing): use rb_vm_pop_cfunc_frame()
-	  instead of rb_frame_pop().
-
-	* vm_eval.c (raise_method_missing): ditto.
-
-	* vm_eval.c (rb_iterate): ditto.
-
-	* internal.h (rb_vm_pop_cfunc_frame): add decl.
-
-	* test/ruby/test_settracefunc.rb: add tests.
-	  provided by drkaes (Stefan Kaes).
-
-	* vm.c, eval.c, include/ruby/intern.h (rb_frame_pop):
-	  move definition of rb_frame_pop() and deprecate it.
-	  It doesn't care about `return' events.
-
-Fri Jun 27 17:57:16 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_substr): need to reset code range for shared
-	  string too, not only copied string.
-	  [ruby-core:62842] [Bug #9882]
-
-Fri Jun 27 17:54:09 2014  Rei Odaira  <Rei.Odaira@gmail.com>
-
-	* signal.c (ruby_signal): should return either `old.sa_sigaction`
-	  or `old.sa_handler`, depending on whether `SA_SIGINFO` is set in
-	  `old.sa_flags`, because they may not be a union.
-	  [ruby-core:62836] [Bug #9878]
-
-Fri Jun 27 17:37:12 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (BSD_vfprintf): fix string width when precision is
-	  given.  as the result of `memchr` is NULL or its offset from the
-	  start cannot exceed the size, the comparison was always false.
-	  [ruby-core:62737] [Bug #9861]
-
-Fri Jun 27 17:27:26 2014  Eric Wong  <e@80x24.org>
-
-	* process.c (proc_getgroups, proc_setgroups): use ALLOCV_N
-	  [Bug #9856]
-
-Fri Jun 27 17:19:22 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_setstrbuf): always check if the buffer is modifiable.
-	  [ruby-core:62643] [Bug #9847]
-
-Fri Jun 27 17:15:36 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (OpenSSL::SSL::SSLServer#accept):
-	  Consider Socket#accept as well as TCPServer#accept.
-	  Reported by Sam Stelfox.  [ruby-core:62064] [Bug #9750]
-
-Fri Jun 27 17:12:45 2014  Eric Wong  <e@80x24.org>
-
-	* complex.c (parse_comp): replace ALLOCA_N with ALLOCV_N/ALLOCV_END
-	  [Bug #9608]
-	* rational.c (read_digits): ditto
-
-Fri Jun 27 17:05:23 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/net/ftp.rb (transfercmd): Close TCP server socket even if an
-	  exception occur.
-
-Fri Jun 27 17:02:36 2014  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
-
-	* thread_win32.c (rb_w32_stack_overflow_handler): use Structured
-	  Exception Handling by AddVectoredExceptionHandler() for machine
-	  stack overflow on mingw.
-	  This would be equivalent to the handling using __try and __except
-	  on mswin introduced by r43748.
-
-Fri Jun 27 17:02:36 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* eval_intern.h (SAVE_ROOT_JMPBUF): workaround for the failure of
-	  test/ruby/test_exception.rb on Windows.
-	  wrap by __try and __exception statements on mswin to raise SIGSEGV
-	  when EXCEPTION_STACK_OVERFLOW is occurred, because MSVCRT doesn't
-	  handle the exception.
-	  however, (1) mingw-gcc doesn't support __try and __exception
-	  statements, and (2) we cannot retry SystemStackError after this
-	  change yet (maybe crashed) because SEH and longjmp() are too
-	  uncongenial.
-
-	* signal.c (check_stack_overflow, CHECK_STACK_OVERFLOW): now defined on
-	  Windows, too.
-
-	* thread_win32.c (ruby_stack_overflowed_p): ditto.
-
-Fri Jun 27 16:56:38 2014  Eric Wong  <e@80x24.org>
-
-	* signal.c (signal_exec): ignore immediate cmd for SIG_IGN
-	* signal.c (trap_handler): set cmd to true for SIG_IGN
-	* signal.c (trap): handle nil and true values for oldcmd
-	  [Bug #9835]
-
-Mon Jun 23 18:51:43 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mod_init_copy): always clear instance variable,
-	  constant and method tables first, regardless the source tables.
-	  [ruby-dev:48182] [Bug #9813]
-
-Mon Jun 23 18:50:13 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread.c (thread_start_func_2): stop if forked in a sub-thread,
-	  the thread has become the main thread.
-	  [ruby-core:62070] [Bug #9751]
-
-Mon Jun 23 18:35:34 2014  Josh Goebel  <dreamer3@gmail.com>
-
-	* net/protocol.rb (using_each_crlf_line): fix SMTP dot-stuffing
-	  for messages not ending with a new-line.
-	  [ruby-core:61441] [Bug #9627] [fix GH-616]
-
-Mon Jun 23 18:16:07 2014  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
-
-	* configure.in: enable SSE2 on mingw. target='i386-pc-mingw32'.
-	  [ruby-core:62095] [Bug #8358]
-
-Mon Jun 23 18:16:07 2014  Tanaka Akira  <akr@fsij.org>
-
-	* configure.in: Fix compilation error.
-	  https://bugs.ruby-lang.org/issues/8358#note-16
-
-Mon Jun 23 18:16:07 2014  Vit Ondruch  <vondruch@redhat.com>
-
-	* configure.in: add qouting brackets and append wildcard for the
-	  rest after target_cpu, to properly detect platform for SSE2
-	  instructions.  [ruby-core:60576] [Bug #8358]
-
-Mon Jun 23 18:16:07 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: use SSE2 instructions to drop unexpected precisions on
-	  other than mingw.  [ruby-core:59472] [Bug #8358]
-
-Mon Jun 23 18:16:07 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in: use SSE2 instructions for drop unexpected
-	  precisions.  [ruby-core:54738] [Bug #8358]
-
-Mon Jun 23 17:29:53 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (obj2uid, obj2gid): now getpwnam_r() and getgrnam_r()
-	  may need larger buffers than sysconf values, so retry with
-	  expanding the buffer when ERANGE is returned.
-	  [ruby-core:61325] [Bug #9600]
-
-Mon Jun 23 17:20:10 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/socket.c (sock_s_getnameinfo): Save errno for EAI_SYSTEM.
-	  Reported by Saravana kumar.  [ruby-core:61820] [Bug #9697]
-	  Fixed by Heesob Park.  [ruby-core:61868]
-
-Mon Jun 23 17:20:10 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/ipsocket.c (ip_s_getaddress): Don't access freed memory.
-
-Mon Jun 23 17:20:10 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket: always operate length of socket addess companion with
-	  socket address. 
-
-	* ext/socket/rubysocket.h (rsock_make_ipaddr): add an argument for
-	  socket address length.
-	  (rsock_ipaddr): ditto.
-
-	* ext/socket/ipsocket.c (ip_addr): pass length to rsock_ipaddr.
-	  (ip_peeraddr): ditto.
-	  (ip_s_getaddress): pass length to rsock_make_ipaddr.
-
-	* ext/socket/socket.c (make_addrinfo): pass length to rsock_ipaddr.
-	  (sock_s_getnameinfo): pass actual address length to rb_getnameinfo.
-	  (sock_s_unpack_sockaddr_in): pass length to rsock_make_ipaddr.
-	  
-	* ext/socket/init.c (rsock_s_recvfrom): pass length to rsock_ipaddr.
-	  (rsock_s_recvfrom_nonblock): ditto.
-
-	* ext/socket/tcpsocket.c (tcp_sockaddr): pass length to
-	  rsock_make_ipaddr.
-
-	* ext/socket/raddrinfo.c (make_ipaddr0): add an argument for socket
-	  address length.  pass the length to rb_getnameinfo.
-	  (rsock_ipaddr): ditto.
-	  (rsock_make_ipaddr): add an argument for socket address length. 
-	  pass the length to make_ipaddr0.
-	  (make_inetaddr): pass length to make_ipaddr0.
-	  a local variable renamed.
-	  (host_str): a local variable renamed.
-	  (port_str): ditto.
-
-Mon Jun 23 16:55:13 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (primary): flush cmdarg flags inside left-paren in a
-	  command argument, to allow parenthesed do-block as an argument
-	  without arguments parentheses.  [ruby-core:61950] [Bug #9726]
-
-Mon Jun 23 16:45:48 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/dl/cptr.c (dlptr_free), ext/dl/handle.c (dlhandle_free),
-	  ext/fiddle/handle.c (fiddle_handle_free),
-	  ext/fiddle/pointer.c (fiddle_ptr_free): fix memory leak.
-	  based on the patch Heesob Park at [ruby-dev:48021] [Bug #9599].
-
-Wed May 28 13:24:39 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rb_cv_func___builtin_unreachable): try with an
-	  external variable not only by a warning, which might not be
-	  shown due to the optimization.  [ruby-core:61647] [Bug #9665]
-
-Wed May 28 13:20:32 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_asn1.c (ossl_asn1_initialize): SYMID on a value
-	  other than Symbol is an undefined behavior.  fix up r31699.
-	  [ruby-core:62142] [Bug #9771]
-
-Wed May 28 13:18:21 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/stringio/stringio.c (strio_putc): fix for non-ascii
-	  encoding, like as IO#putc.  [ruby-dev:48114] [Bug #9765]
-
-Tue May 27 13:57:41 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/fileutils.rb (FileUtils#copy_entry): update rdoc about
-	  preserve option and permissions, following r31123.
-	  [ruby-core:62065] [Bug #9748]
-
-Tue May 27 13:42:36 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (umethod_bind): use the ancestor iclass instead of new
-	  iclass to get rid of infinite recursion, if the defined module
-	  is already included.  [ruby-core:62014] [Bug #9721]
-
-Tue May 27 13:42:36 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (rb_method_call_with_block, umethod_bind): call with
-	  IClass including the module for a module instance method.
-	  [ruby-core:61936] [Bug #9721]
-
-	* vm_insnhelper.c (vm_search_super_method): allow bound
-	  UnboundMethod case.
-
-Tue May 27 11:51:00 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (ary_reject): may be turned into a shared array during
-	  the given block.  [ruby-dev:48101] [Bug #9727]
-
-Tue May 27 11:48:22 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_buf_cat): should round up the capacity by 4KiB,
-	  but not number of rooms.  [ruby-core:61886] [Bug #9709]
-
-Tue May 27 11:46:03 2014  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/xmlrpc/client.rb (do_rpc): don't check body length.
-	  If HTTP content-encoding is used, the length may be different.
-	  [Bug #8182] [ruby-core:53811]
-
-Tue May 27 11:23:02 2014  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c (d_lite_cmp): should compare with #<.
-
-Mon May  5 00:42:35 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* ext/psych/yaml/config.h: ditto.
-
-	* ext/psych/yaml/scanner.c: ditto.
-
-	* ext/psych/yaml/yaml_private.h: ditto.
-
-Thu May  8 02:01:51 2014  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_initialize): Insert GC guard.
-
-	* ext/bigdecimal/bigdecimal.c (BigDecimal_global_new): ditto.
-
-Thu May  8 01:51:19 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl_pkey.c (ossl_pkey_verify): as EVP_VerifyFinal()
-	  finalizes only a copy of the digest context, the context must be
-	  cleaned up after initialization by EVP_MD_CTX_cleanup() or a
-	  memory leak will occur.  [ruby-core:62038] [Bug #9743]
-
-Wed Apr 30 16:39:43 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb (rl_hook_func_t): check pointer type.
-	  [ruby-dev:48089] [Bug #9702]
-
-Wed Apr 30 16:37:16 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (rb_w32_accept, open_ifs_socket, socketpair_internal):
-	  reset inherit flag of socket to avoid unintentional inheritance of
-	  socket.  note that the return value of SetHandleInformation() is not
-	  verified intentionally because old Windows may return an error.
-	  [Bug #9688] [ruby-core:61754]
-
-Wed Apr 30 16:33:57 2014  Eric Wong  <e@80x24.org>
-
-	* time.c (time_mload): freeze and preserve marshal-loaded time zone
-	* test/ruby/test_time.rb: add test for GC on loaded object
-	  [Bug #9652]
-
-Wed Apr 30 16:15:09 2014  Kohei Suzuki  <eagletmt@gmail.com>
-
-	* vm_method.c (rb_method_entry_get_without_cache): me->klass is 0
-	  for a method aliased in a module.  [ruby-core:61636] [Bug #9663]
-
-Wed Apr 30 16:15:09 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_method.c (rb_method_entry_get_without_cache): get rid of
-	  infinite recursion at aliases in a subclass and a superclass.
-	  return actually defined class for other than singleton class.
-	  [ruby-core:60431] [Bug #9475]
-
-Wed Apr 30 16:09:18 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_callee_setup_arg): turn a macro into an
-	  inline function.
-
-Wed Apr 30 15:04:25 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb: fix typo, `$defs` not `$DEFS`.
-	  [ruby-core:61756] [Bug #9578]
-
-Mon Mar 31 00:57:39 2014  James Edward Gray II  <james@graysoftinc.com>
-
-	* lib/csv.rb: Fixed a broken regular expression that was causing
-	  CSV to miss escaping some special meaning characters when used
-	  in parsing.
-	  Reported by David Unric
-	  [ruby-core:54986] [Bug #8405]
-
-Mon Mar 31 00:48:12 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* test/ruby/envutil.rb (assert_no_memory_leak): increase default value
-	  of `limit` keyword argument.
-	  assert_no_memory_leak occasionally fails with limit=1.5.
-
-Mon Mar 31 00:15:45 2014  Shota Fukumori  <her@sorah.jp>
-
-	* vm_eval.c (eval_string_with_cref): Unify to use NIL_P.
-
-Mon Mar 31 00:15:45 2014  Shota Fukumori  <her@sorah.jp>
-
-	* vm_eval.c (eval_string_with_cref): Use file path even if scope is
-	  given. Related to [ruby-core:56099] [Bug #8662] and r42103.
-
-Mon Mar 31 00:02:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (yycompile): store file name as String to keep the encoding.
-
-	* parse.y (rb_parser_compile_string_path, rb_parser_compile_file_path):
-	  new functions to pass file name as a String.
-
-	* parse.y (gettable_gen): return a copy of the original file name, not
-	  a copy in filesystem encoding.
-
-	* vm_eval.c (eval_string_with_cref): use Qundef instead of "(eval)".
-
-Sun Mar 30 23:49:21 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/openssl/ossl.c (ossl_make_error): check NULL for unknown
-	  error reasons with old OpenSSL, and insert a colon iff formatted
-	  message is not empty.
-
-Thu Mar 20 21:13:18 2014  Eric Wong  <e@80x24.org>
-
-	* variable.c (rb_const_set): delete existing entry on redefinition
-	  [Bug #9645]
-	* test/ruby/test_const.rb (test_redefinition): test for leak
-
-Thu Mar 20 20:44:17 2014  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* test/fiddle/test_c_struct_entry.rb,
-	  test/fiddle/test_c_union_entity.rb,
-	  test/fiddle/test_cparser.rb, test/fiddle/test_func.rb,
-	  test/fiddle/test_handle.rb, test/fiddle/test_import.rb,
-	  test/fiddle/test_pointer.rb: don't run test if the system
-	  don't support fiddle.
-
-Sun Mar 16 00:57:20 2014  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* ext/.document: remove refinement from documentable directories.
-
-Mon Mar  3 01:43:30 2014  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* eval_error.c (warn_printf): use rb_vsprintf instead so ruby specific
-	  extensions like PRIsVALUE can be used in format strings
-	* eval_error.c (error_print): use warn_print_str (alias for
-	  rb_write_error_str) to print a string value instead of using
-	  RSTRING_PTR and RSTRING_LEN manually
-	* eval.c (setup_exception): use PRIsVALUE instead of %s and RSTRING_PTR
-
-Mon Mar  3 01:32:14 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/readline/extconf.rb (rl_hook_func_t): define as Function for
-	  very old readline versions.  [ruby-core:61209] [Bug #9578]
-
-Mon Mar  3 01:32:14 2014  Tanaka Akira  <akr@fsij.org>
-
-	* ext/readline/readline.c (Init_readline): Use rl_hook_func_t instead
-	  of Function to support readline-6.3.  (rl_hook_func_t is available
-	  since readline-4.2.)
-	  Reported by Dmitry Medvinsky.  [ruby-core:61141] [Bug #9578]
-
-Mon Mar  3 01:25:28 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (setup_exception): preserve errinfo across calling #to_s
-	  method on the exception.  [ruby-core:61091] [Bug #9568]
-
-Mon Mar  3 01:00:00 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* numeric.c (ruby_num_interval_step_size): check signs and get rid
-	  of implementation dependent behavior of negative division.
-	  [ruby-core:61106] [Bug #9570]
-
-Mon Mar  3 00:43:33 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	(merged partially from r42781)
-	* test/ruby/test_numeric.rb (assert_step): introduce assert_step.
-
-Mon Mar  3 00:24:38 2014  Zachary Scott  <e@zzak.io>
-
-	* README.EXT.ja: [DOC] Fix typo "macro macro" @utenmiki [Fixes GH-551]
-	  https://github.com/ruby/ruby/pull/551
-
-Sat Feb 22 22:11:58 2014  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* ext/io/console/console.c (console_dev): need read access for conout$
-	  because some functions need it.  [Bug#9554]
-
-Sat Feb 22 14:01:42 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* iseq.c (iseq_load): keep type_map to get rid of memory leak.
-	  based on a patch by Eric Wong at [ruby-core:59699].  [Bug #9399]
-
-Sat Feb 22 13:56:38 2014  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* compile.c (iseq_build_from_ary_body): Use :blockptr instead of :block
-	  as hash key when loading serialized instruction sequences from arrays.
-	  [Bug #9455] [ruby-core:60146]
-
-Sat Feb 22 13:04:54 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* ext/socket/init.c (wait_connectable): break if the socket is
-	  writable to avoid infinite loops on FreeBSD and other platforms
-	  which conforms to SUSv3.  This problem cannot be reproduced with
-	  loopback interfaces, so it's hard to write test code.
-	  rsock_connect() and wait_connectable() are overly complicated, so
-	  they should be refactored, but I commit this fix as a workaround
-	  for the release of Ruby 1.9.3 scheduled on Feb 24.
-	  [ruby-core:60940] [Bug #9547]
-
-Sat Feb 22 12:55:24 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	(merged partially from r42927)
-	* lib/rubygems/core_ext/kernel_require.rb: Backport a fix for concurrent
-	  requires. [ruby-core:58918] [Backport #9224]
-	  see also https://github.com/rubygems/rubygems/pull/833
-
-Sat Feb 22 11:50:52 2014  Eric Wong  <e@80x24.org>
-
-	* ext/socket/ancdata.c (bsock_sendmsg_internal): only retry on error
-	  (bsock_recvmsg_internal): ditto
-	* test/socket/test_unix.rb: test above for infinite loop
-
-Sat Feb 22 11:44:50 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mod_init_copy): do nothing if copying self.
-	  [ruby-dev:47989] [Bug #9535]
-
-	* hash.c (rb_hash_initialize_copy): ditto.
-
-Thu Feb 20 02:14:18 2014  Zachary Scott  <e@zzak.io>
-
-	* ext/openssl/lib/openssl/buffering.rb: Fix warning in copyright
-
-Thu Feb 20 02:14:18 2014  Zachary Scott  <e@zzak.io>
-
-	* ext/openssl/lib/openssl/buffering.rb: [DOC] Fix HEREDOC comment for
-	  OpenSSL::Buffering which breaks overview because of RDoc bug
-
-Thu Feb 20 02:04:09 2014  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/.document:  Add syslog/lib to documentable items. [Bug #9228]
-
-Thu Feb 20 01:54:08 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_search_super_method): when super called in a
-	  bound UnboundMethod generated from a module, no superclass is
-	  found since the current defined class is the module, then call
-	  method_missing in that case.  [ruby-core:59619] [Bug #9377]
-
-Thu Feb 20 01:33:06 2014  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/optparse.rb:  The Integer acceptable now allows binary and
-	  hexadecimal numbers per the documentation.  [ruby-trunk - Bug #8865]
-
-	  DecimalInteger, OctalInteger, DecimalNumeric now validate their input
-	  before converting to a number.  [ruby-trunk - Bug #8865]
-
-	* test/optparse/test_acceptable.rb:  Tests for the above, tests for all
-	  numeric acceptables for existing behavior.
-
-Thu Feb 20 01:23:36 2014  Aaron Pfeifer  <aaron.pfeifer@gmail.com>
-
-	* thread.c (terminate_atfork_i): fix locking mutexes not unlocked in
-	  forks when not tracked in thread.  [ruby-core:55102] [Bug #8433]
-
-Tue Feb 18 23:48:03 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (assert_separately): require envutil in the
-	  child process too.
-
-Tue Feb 18 22:38:01 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* test/ruby/envutil.rb (Test::Unit::Assertions#assert_separately):
-	  specify the encoding of source.
-
-Mon Feb 17 02:00:36 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/open-uri.rb: Make proxy disabling working again.
-	  Fixed by Christophe Philemotte.   [ruby-core:59650] [Bug #9385]
-
-Mon Feb 17 01:57:45 2014  Benoit Daloze  <eregontp@gmail.com>
-
-	* range.c (Range#size): [DOC] improve description and add examples.
-	  Patch by @skade. [Fixes GH-501]
-
-Mon Feb 17 01:51:49 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/webrick/htmlutils.rb (WEBrick::HTMLUtils#escape): replace HTML
-	  meta chars even in non-ascii string.  [Bug #8425] [ruby-core:55052]
-
-	* lib/webrick/httputils.rb (WEBrick::HTTPUtils#{_escape,_unescape}):
-	  fix %-escape encodings.  [Bug #8425] [ruby-core:55052]
-
-Mon Feb 17 01:51:49 2014  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
-
-	* test/webrick/test_htmlutils.rb: add test for WEBrick::HTMLUtils.
-
-Mon Feb 17 01:41:59 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* array.c (rb_hash_rehash): use hash_alloc() instead of rb_hash_new().
-	  [Bug #9187]
-
-Mon Feb 17 01:41:59 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* hash.c (rb_hash_rehash): make temporary st_table under the control
-	  of GC. [Bug #9187]
-
-	* test/ruby/test_hash.rb: add a test for above.
-
-Mon Feb 17 01:41:59 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* hash.c (rb_hash_rehash): fix to free new st_table when exception
-	  is raised in do_hash(). [Bug #9187]
-
-Mon Feb 17 01:18:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval.c (rb_mod_s_constants): return its own constants for other
-	  than Module itself.  [ruby-core:59763] [Bug #9413]
-
-Mon Feb 17 01:16:00 2014  Eric Wong <e@80x24.org>
-
-	* ext/json/generator/depend: add build dependencies for json extension
-	  [Bug #9374] [ruby-core:59609]
-	* ext/json/parser/depend: ditto
-
-Mon Feb 17 01:12:57 2014  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* ext/fiddle/closure.c: use sizeof(*pcl) for correct sizeof value.
-	  [ruby-core:57599] [Bug #8978].
-
-Mon Feb 17 01:12:57 2014  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/fiddle/closure.c: use sizeof(*pcl) for correct sizeof value.
-	  [ruby-core:57599] [Bug #8978].  Thanks mame!
-
-Mon Feb 17 01:09:52 2014  Eric Wong <e@80x24.org>
-
-	* benchmark/driver: avoid large alloc in driver process
-	  [ruby-core:59869] [Bug #9430]
-
-Mon Feb 17 00:59:40 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (rb_thread_create_timer_thread): fix for platforms
-	  where PTHREAD_STACK_MIN is a dynamic value and not a compile-time
-	  constant.  [ruby-dev:47911] [Bug #9436]
-
-Mon Feb 17 00:59:40 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* thread_pthread.c (rb_thread_create_timer_thread): expand timer
-	  thread stack size to get rid of segfault on FreeBSD/powerpc64.
-	  based on the patch by Steve Wills at [ruby-core:59923].
-	  [ruby-core:56590] [Bug #8783]
-
-Mon Feb 17 00:45:44 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_modify_expand): enable capacity and disable
-	  association with packed objects when setting capa, so that
-	  pack("p") string fails to unpack properly after modified.
-
-Sun Feb 16 01:36:57 2014  Aaron Patterson <aaron@tenderlovemaking.com>
-
-	* ext/psych/yaml/emitter.c: merge libyaml 0.1.5
-	* ext/psych/yaml/loader.c: ditto
-	* ext/psych/yaml/parser.c: ditto
-	* ext/psych/yaml/reader.c: ditto
-	* ext/psych/yaml/scanner.c: ditto
-	* ext/psych/yaml/writer.c: ditto
-	* ext/psych/yaml/yaml_private.h: ditto
-
-Sun Feb 16 01:02:32 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/racc/rdoc/grammar.en.rdoc: [DOC] Correct grammar and typos
-	  Patch by Giorgos Tsiftsis [Bug #9429] [ci skip]
-
-Sun Feb 16 01:00:45 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/open-uri.rb: [DOC] use lower case version of core classes, same
-	  as commit r44878, based on patch by Jonathan Jackson [Bug #9483]
-
-Sun Feb 16 01:00:45 2014  Zachary Scott  <e@zzak.io>
-
-	* ext/ripper/lib/ripper/lexer.rb: [DOC] use lower case version of core
-	  classes when referring to return value, since we aren't directly
-	  talking about the class. Patch by Jonathan Jackson [Bug #9483]
-
-Sun Feb 16 00:57:13 2014  Ayumu AIZAWA  <ayumu.aizawa@gmail.com>
-
-	* variable.c: [DOC] adding extra example in docs.
-	  patched by Steve Klabnik. [Bug #9210]
-
-Sun Feb 16 00:54:50 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Resource::TXT#data): Return concatenated
-	  string.
-	  Patch by Ryan Brunner.  [ruby-core:58220] [Bug #9093]
-
-Sun Feb 16 00:50:59 2014  Zachary Scott  <e@zzak.io>
-
-	* ext/openssl/ossl_pkey_dh.c: Fixed typo by Sandor Szuecs [Bug #9243]
-
-Sun Feb 16 00:47:36 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/xmlrpc/client.rb: [DOC] Remove note about SSL package on RAA
-	  Since RAA has been deprecated, and the SSL package has been replaced
-	  with net/https this statement is entirely false and should be
-	  deleted. [Bug #9152]
-
-Sun Feb 16 00:44:51 2014  Zachary Scott  <e@zzak.io>
-
-	* lib/net/smtp.rb: [DOC] Remove dead link to RAA by Giorgos Tsiftsis
-	  Fixes the following bugs: [Bug #9152] [Bug #9268] [Bug #9394]
-	* lib/open-uri.rb: ditto
-
-Sun Feb 16 00:27:04 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* hash.c (rb_hash_assoc): revert r42224. table->type->compare is
-	  called only if hashes are matched.
-
-	* test/ruby/test_hash.rb: add a test to check using #== to compare.
-
-Sun Feb 16 00:27:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_initialize_copy): copy st_table type even if empty.
-	  [ruby-core:56256] [Bug #8703]
-
-Sun Feb 16 00:27:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_initialize_copy): clear old table before copy new
-	  table.
-
-Sun Feb 16 00:27:04 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* hash.c (rb_hash_assoc): aggregate object can be initialized only
-	  with link time constants.
-
-Sun Feb 16 00:27:04 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* hash.c (rb_hash_assoc): performance improvement by replacing
-	  compare function in RHASH(hash)->ntbl->type temporarily.
-
-Sun Feb 16 00:01:16 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb: Ignore name servers which cause EAFNOSUPPORT on
-	  socket creation.
-	  Reported by Bjoern Rennhak.  [ruby-core:60442] [Bug #9477]
-
-Sat Feb 15 23:58:31 2014  Tanaka Akira  <akr@fsij.org>
-
-	* lib/resolv.rb (Resolv::DNS::Message::MessageDecoder): Raise
-	  DecodeError if no data before the limit.
-	  Reported by Will Bryant.  [ruby-core:60557] [Bug #9498]
-
-Sat Feb 15 23:46:31 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (IDSET_ATTRSET_FOR_INTERN): fix off-by-one bug.
-
-	* parse.y (rb_enc_symname_type): junk ID succeeded by '=' is also
-	  attrset ID.  [ruby-core:60668] [Bug #8756]
-
-Sat Feb 15 23:42:04 2014  Richo Healy  <richo@psych0tik.net>
-
-	* test/ruby/test_struct.rb: Add regression test for question marks and
-	  bangs in struct members. [Closes GH-468]
-
-Sat Feb 15 23:26:31 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (new_struct): fix warning message, class name and encoding.
-
-Sat Feb 15 16:08:26 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* struct.c (make_struct): avoid inadvertent symbol creation.
-	  (rb_struct_aref): ditto.
-	  (rb_struct_aset): ditto.
-
-Sat Feb 15 15:32:46 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): should check ci->me->flag of
-	  a refining method in case the method is private.
-	  [ruby-core:60111] [Bug #9452]
-
-	* vm_method.c (make_method_entry_refined): set me->flag of a refined
-	  method entry to NOEX_PUBLIC in case the original method is private
-	  and it is refined as a public method.  The original flag is stored
-	  in me->def->body.orig_me, so it's OK to make a refined method
-	  entry public.  [ruby-core:60111] [Bug #9452]
-
-	* test/ruby/test_refinement.rb: related tests.
-
-Tue Feb 11 23:21:02 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* test/ruby/test_struct.rb (test_struct_question_mark): add a testcase
-	  for Struct attribute with question mark. the patch was originally
-	  written by Eric Wong [ruby-core:59095] [Backport #9248]
-
-Tue Feb 11 23:21:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id_attrset, intern_str): allow junk attrset ID for
-	  Struct.
-
-	* parse.y (rb_id_attrset): fix inconsistency with literals, allow
-	  ID_ATTRSET and return it itself, but ID_JUNK cannot make ID_ATTRSET.
-	  and raise a NameError instead of rb_bug() for invalid argument.
-
-Tue Feb 11 23:21:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_enc_symname_type): allow ID_ATTRSET for ID_INSTANCE,
-	  ID_GLOBAL, ID_CLASS, ID_JUNK too.  [Bug #8756]
-
-Tue Feb 11 23:21:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id_attrset): allow other than ID_ATTRSET.
-
-	* parse.y (intern_str): ditto.  try stem ID for ID_INSTANCE,
-	  ID_GLOBAL, ID_CLASS, ID_JUNK too.  [Bug #8756]
-
-Tue Feb 11 23:21:02 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (rb_id_attrset): check if the argument is valid type as an
-	  attribute.
-
-Tue Feb 11 00:26:19 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (GetLastError): already defined in windows.h on nowadays
-	  cygwin, and caused the confliction with the system provided
-	  definition on cygwin64.  by @kou1okada [Fixes GH-433].
-
-Mon Feb 10 01:15:10 2014  Kouhei Sutou  <kou@cozmixng.org>
-
-	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): Fix indent.
-
-Mon Feb 10 01:15:10 2014  Kouhei Sutou  <kou@cozmixng.org>
-
-	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): Add missing return
-	  value assignment.
-
-Mon Feb 10 01:15:10 2014  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* ext/socket/raddrinfo.c (nogvl_getaddrinfo): work around for Ubuntu
-	  13.04's getaddrinfo issue with mdns4. [ruby-list:49420]
-
-Mon Feb 10 00:42:12 2014  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* ext/thread/thread.c (rb_szqueue_clear): notify SZQUEUE_WAITERS
-	  on SizedQueue#clear. [ruby-core:59462] [Bug #9342]
-
-	* test/thread/test_queue.rb: add test. the patch is from
-	  Justin Collins.
-
-Mon Feb 10 00:27:33 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (local_push_gen, local_pop_gen): save cmdarg_stack to
-	  isolate command argument state from outer scope.
-	  [ruby-core:59342] [Bug #9308]
-
-Mon Feb 10 00:02:18 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* dir.c (glob_helper): don't skip current directories if FNM_DOTMATCH
-	  is given.  [ruby-core:53108] [Bug #8006]
-
-Wed Feb  5 23:39:36 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (intern_str): sigil only names are junk, at least one
-	  identifier character is needed.  [ruby-dev:47723] [Bug #8928]
-
-	* parse.y (rb_enc_symname_type): fix out of bound access.
-
-Wed Feb  5 22:54:52 2014  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* time.c (get_timeval, get_new_timeval): use rb_obj_class()
-	  instead of CLASS_OF() because CLASS_OF() may return
-	  a singleton class.
-
-Sun Feb 2 05:48:42 2014  Eric Wong <e@80x24.org>
-
-	* io.c (rb_io_syswrite): add RB_GC_GUARD
-	  [Bug #9472][ruby-core:60407]
-
-Fri Jan 31 00:51:50 2014  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* configure.in: use $@ instead of $(.TARGET) because .TARGET is not
-	  supported by GNU make.
-
-Fri Jan 31 00:49:41 2014  Yamashita Yuu  <yamashita@geishatokyo.com>
-
-	* ext/openssl/ossl_ssl.c (Init_ossl_ssl): Declare a constant
-	  `OP_MSIE_SSLV2_RSA_PADDING` only if the macro is defined.  The
-	  `SSL_OP_MSIE_SSLV2_RSA_PADDING` has been removed from latest
-	  snapshot of OpenSSL 1.0.1.  [Fixes GH-488]
-
-Thu Jan 23 21:08:16 2014  Shota Fukumori  <her@sorah.jp>
-
-	* vm_insnhelper.c (check_match): Fix SEGV with VM_CHECKMATCH_TYPE_CASE
-	  and class of `pattern` has `method_missing`
-	  [Bug #8882] [ruby-core:58606]
-
-Mon Jan 20 01:02:18 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/bigdecimal/bigdecimal.c (CLASS_NAME): macro to wrap
-	  depending on PRIsVALUE for 1.9.  [Backport #9406]
-
-	* ext/bigdecimal/bigdecimal.c (DECIMAL_SIZE_OF_BITS): fallback
-	  definition for 2.1 or older.  [ruby-core:59750] [Backport #9406]
-
-Sun Jan 12 22:46:49 2014  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	patch inspired from r44260 on trunk. [ruby-core:58652] [Bug #9168]
-
-	* gc.c (run_finalizer): clear th->errinfo before invoke finalizer and
-	  restore afterward.
-
-	* test/ruby/test_gc.rb (test_exception_in_finalizer): add test for
-	  above.
-
-	* vm_trace.c (rb_threadptr_exec_event_hooks_orig): clear th->errinfo
-	  before invoke hook.
-
-Sun Jan 12 16:07:52 2014  vo.x (Vit Ondruch)  <vondruch@redhat.com>
-
-	* tool/rbinstall.rb (Gem::Specification#collect): make stable
-	  Gem::Specification.files in default .gemspecs the different order of
-	  "files" in .gemspec files makes them different therefore possibly
-	  conflicting in multilib scenario.  patch by vo.x (Vit Ondruch) at
-	  [ruby-core:57544] [Bug #8623].
-
-Sun Jan 12 16:01:54 2014  Tanaka Akira  <akr@fsij.org>
-
-	* test/openssl/test_cipher.rb (test_aes_gcm_wrong_tag): Don't use
-	  String#succ because it can make modified (wrong) auth_tag longer
-	  than 16 bytes.  The longer auth_tag makes that
-	  EVP_CIPHER_CTX_ctrl (and internally aes_gcm_ctrl) fail.
-	  [ruby-core:55143] [Bug #8439] reported by Vit Ondruch.
-
-Sun Jan 12 15:33:11 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_qsort): fix potential stack overflow on a large
-	  machine.  based on the patch by Conrad Irwin <conrad.irwin AT
-	  gmail.com> at [ruby-core:51816].  [Bug #7772]
-
-Sun Jan 12 15:17:00 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/tk/tkutil/tkutil.c: use rb_sprintf(), rb_id2str(), and
-	  rb_intern_str() instead of rb_intern() and RSTRING_PTR() with
-	  RB_GC_GUARD(), to prevent temporary objects from GC.
-	  [ruby-core:39000] [Bug #5199]
-
-Tue Jan  7 01:16:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (mnew_from_me): keep iclass as-is, to make inheritance
-	  chain consistent.  [ruby-core:59358] [Bug #9315]
-
-	* proc.c (method_owner): return the original defined_class from
-	  prepended iclass, instead.
-
-Tue Jan  7 01:16:34 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_search_super_method): direct superclass of a
-	  module is found when super called in a Method object generated a
-	  method defined in a module, call method_missing in that case.
-	  [ruby-core:59358] [Bug #9315]
-
-Fri Jan  3 22:25:23 2014  Aman Gupta <ruby@tmm1.net>
-
-	* test/net/imap/cacert.pem: generate new CA cert, since the last one
-	  expired. [Bug #9341] [ruby-core:59459]
-	* test/net/imap/server.crt: new server cert signed with updated CA.
-	* test/net/imap/Makefile: add `make regen_certs` to automate this
-	  process.
-
-Wed Dec 25 00:46:44 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/net/smtp.rb (Net::SMTP#critical):  Always return a
-	  Net::SMTP::Response.  Patch by Pawel Veselov.
-	  [ruby-trunk - Bug #9125]
-	* test/net/smtp/test_smtp.rb:  Test for the above.
-
-Wed Dec 25 00:18:19 2013  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/lib/socket.rb: Don't test $! in "ensure" clause because
-	  it may be set before the body.
-	  Reported by ko1 and mrkn.  [ruby-core:59088] [Bug #9247]
-
-	* lib/cgi/core.rb: Ditto.
-
-	* lib/drb/ssl.rb: Ditto.
-
-Tue Dec 24 00:18:14 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (configuration): strip destdir part from prefix to get
-	  rid of duplication.  a patch by arton at [ruby-core:58859].
-	  [ruby-core:58856] [Bug #9213]
-
-Mon Dec 23 22:37:01 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (mnew_from_me): method by respond_to_missing? should be
-	  owned by the original class.
-
-Sun Dec 22 22:56:06 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (mnew_from_me): achieve the original defined_class from
-	  prepended iclass, to fix inherited owner.
-
-	* proc.c (method_owner): return the defined class, but not the
-	  class which the method object is created from.
-
-Sun Dec 22 22:56:06 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* proc.c (method_owner): return the class where alias is defined, not
-	  the class original method is defined.
-
-	* vm_method.c (rb_method_entry_make, rb_alias): store the originally
-	  defined class in me.  [Bug #7993] [Bug #7842] [Bug #9236]
-
-	* vm_method.c (rb_method_entry_get_without_cache): cache included
-	  module but not iclass.
-
-Sun Dec 22 00:07:09 2013  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* insns.def: Fix optimization bug of Float#/ [Bug #9238]
-
-Sat Dec 21 23:13:55 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_jump.c (rb_exec_end_proc): unlink and free procs data before
-	  calling for each procs.  [Bug #9110]
-
-Sat Dec 21 23:13:55 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* eval_jump.c (rb_exec_end_proc): fix double free or corruption error
-	  when reentering by callcc. [ruby-core:58329] [Bug #9110]
-
-	* test/ruby/test_beginendblock.rb: test for above.
-
-Sat Dec 21 22:55:03 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/resolv.rb (Resolv::Hosts#lazy_initialize): should not
-	  consider encodings in hosts file.  [ruby-core:59239] [Bug #9273]
-
-	* lib/resolv.rb (Resolv::Config.parse_resolv_conf): ditto.
-
-Sat Dec 21 22:51:51 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/Makefile.sub (fake.rb): fixed wrong RUBY_PLATFORM, to correctly
-	  install win32.h.
-	  [ruby-core:58801][Bug #9199] reported by arton.
-
-Sat Dec 21 16:16:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* gc.c (finalize_deferred): flush all deferred finalizers while other
-	  finalizers can get ready to run newly by lazy sweep.
-	  [ruby-core:58833] [Bug #9205]
-
-Sat Dec 21 16:07:00 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby_atomic.h (ATOMIC_PTR_EXCHANGE): atomic exchange function for
-	  a generic pointer.
-
-Sat Dec 21 15:50:13 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* ruby_atomic.h: remove duplicate definisions between ATOMIC_XXX
-	  and ATOMIC_SIZE_XXX.
-
-Sat Dec 21 15:50:13 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* ruby_atomic.h: define ATOMIC_SIZE_CAS() with
-	  __atomic_compare_exchange_n() and refactoring.
-
-Sat Dec 21 15:50:13 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* ruby_atomic.h: use __atomic builtin functions supported by GCC.
-	  __sync family are legacy functions now and it is recommended
-	  that new code use the __atomic functions.
-	  http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
-
-	* configure.in: check existence of __atomic functions.
-
-Sat Dec 21 15:37:11 2013  Naohisa Goto  <ngotogenome@gmail.com>
-
-	* ruby_atomic.h (ATOMIC_SIZE_CAS): fix compile error on Solaris
-	  since r43460.
-
-Sat Dec 21 15:37:11 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby_atomic.h (ATOMIC_SIZE_CAS): new macro, compare and swap size_t.
-
-Sat Dec 21 15:37:11 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby_atomic.h (rb_w32_atomic_cas): call InterlockedCompareExchange
-	  directly.
-
-	* ruby_atomic.h (ATOMIC_CAS): fix missing function call.
-
-Sat Dec 21 15:37:11 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ruby_atomic.h (ATOMIC_CAS): suppress C4022 and C4047 warnings in
-	  VC6.  only InterlockedCompareExchange is declared using PVOID.
-
-Sat Dec 21 14:54:37 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] remove example of
-	  Rational#to_d without argument. [Bug #8958]
-
-Sat Dec 21 14:54:37 2013  Zachary Scott  <e@zzak.io>
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] +precision+ is required
-
-Sat Dec 21 14:54:37 2013  Zachary Scott  <e@zzak.io>
-
-	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] Document the required
-	  +precision+ argument for Rational#to_d [Bug #8958]
-
-Sat Dec 21 03:46:14 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_strptime.c (date__strptime_internal): unset
-	  case-insensitive flag for [:alpha:], which already implies both
-	  cases, to get rid of backtrack explosion.  [ruby-core:58984]
-	  [Bug #9221]
-
-Sat Dec 21 03:46:14 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_parse.c (parse_time): unset case-insensitive flag
-	  for [:alpha:], which already implies both cases, to get rid of
-	  backtrack explosion.  [ruby-core:58876] [Bug #9221]
-
-Fri Dec 13 00:23:01 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* enumerator.c (enumerator_with_index): try to convert given offset to
-	  integer. fix bug introduced in r39594.
-
-Mon Dec  2 23:31:00 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (enumerator_with_index): should not store local variable
-	  address to memoise the arguments.  it is invalidated after the return.
-	  [ruby-core:58692] [Bug #9178]
-
-Mon Dec  2 23:16:50 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* enumerator.c (enumerator_with_index):  Restore handling of a nil memo
-	  from r39594.
-
-Mon Dec  2 22:53:05 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* file.c (rb_readlink): fix buffer overflow on a long symlink. since
-	  rb_str_modify_expand() expands from its length but not its capacity,
-	  need to set the length properly for each expansion.
-	  [ruby-core:58592] [Bug #9157]
-
-Fri Nov 29 00:31:46 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* common.mk (Doxyfile): tool/file2lastrev.rb needs running with
-	  BASERUBY since r43617.  [ruby-dev:47823] [Bug #9169]
-
-Fri Nov 22 13:18:28 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod): BigMath requires more precision.
-
-Fri Nov 22 12:46:08 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* util.c (ruby_strtod): ignore too long fraction part, which does not
-	  affect the result.
-
-Wed Nov 20 15:20:00 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* test/ruby/test_thread.rb (test_mutex_unlock_on_trap): extend waiting
-	  time to invocation of signal handler from 0.01 sec to 0.2 sec.
-	  RubyCI report error on mswin. reported by @unak
-
-Wed Nov 13 11:57:01 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.14. [ruby-core:58300]
-	  [Backport #9104]
-	  the patch is provided by drbrain (Eric Hodel).
-
-Tue Nov 12 23:41:43 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (rb_feature_p): deal with default loadable suffixes.
-
-	* load.c (load_lock): initialize statically linked extensions.
-
-	* load.c (search_required, rb_require_safe): deal with statically
-	  linked extensions.
-
-	* load.c (ruby_init_ext): defer initialization of statically linked
-	  extensions until required actually.  [Bug #8883]
-
-Tue Nov 12 23:41:43 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (ruby_init_ext): share feature names between frame name and
-	  provided features.
-
-Tue Nov 12 23:33:08 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (Gem::Specification.load): obtain spec date from
-	  VCS for the case using git, RUBY_RELEASE_DATE is the last resort.
-	  probably fixes [Bug #9085].
-
-Tue Nov 12 23:24:35 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUNRUBY): append -- only after runruby.rb, not
-	  cross-compiling baseruby, so that $(RUN_OPT) can be command line
-	  options.  [ruby-dev:47703] [Bug #8893]
-
-Tue Nov 12 23:24:35 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	(partially merged from r42862)
-	* common.mk: use RUNRUBY instead of MINIRUBY because MINIRUBY can't
-	  require extension libraries. The patch is from nobu
-	  (Nobuyoshi Nakada).
-
-Mon Nov 11 23:54:51 2013  Tanaka Akira  <akr@fsij.org>
-
-	* ext/socket/init.c (cloexec_accept): Fix a compile error on
-	  Debian GNU/kFreeBSD.  Consider HAVE_ACCEPT4 is defined
-	  but SOCK_CLOEXEC is not defined.
-
-Mon Nov 11 22:14:37 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/win32.h (rb_infinity_float): suppress overflow in
-	  constant arithmetic warnings.  [ruby-core:57981] [Bug #9044]
-
-Mon Nov 11 22:14:37 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/Makefile.sub (config.h): VC 2013 supports C99 mathematics
-	  functions.  [ruby-core:57981] [Bug #9044]
-
-Thu Oct 31 22:28:04 2013  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* test/openssl/test_pkey_ec.rb: Skip tests for "Oakley" curves as
-	  they are not suitable for ECDSA.
-	  [ruby-core:54881] [Bug #8384]
-
-Thu Oct 31 22:28:04 2013  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* ext/openssl/ossl_pkey_ec.c: Ensure compatibility to builds of
-	  OpenSSL with OPENSSL_NO_EC2M defined, but OPENSSL_NO_EC not
-	  defined.
-	* test/openssl/test_pkey_ec.rb: Iterate over built-in curves
-	  (and assert their non-emptiness!) instead of hard-coding them, as
-	  this may cause problems with respect to the different availability
-	  of individual curves in individual OpenSSL builds.
-	  [ruby-core:54881] [Bug #8384]
-
-	  Thanks to Vit Ondruch for providing the patch!
-
-Sun Oct 27 01:04:28 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.13. [ruby-core:58031]
-	  [Backport #9052]
-	  the patch is provided by drbrain (Eric Hodel).
-
-Sat Oct 26 16:04:36 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* gc.c (gc_prof_set_heap_info): fix compile error when
-	  GC_PROFILE_MORE_DETAIL != 0.
-	  the patch is provided by ko1 (Koichi Sasada).
-
-Thu Oct 24 23:27:12 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.12. [ruby-core:57818]
-	  [Backport #9014]
-	  the patch is provided by drbrain (Eric Hodel).
-
-Thu Oct 24 22:49:28 2013  Marc-Andre Lafortune  <ruby-core@marc-andre.ca>
-
-	* parse.y: Remove +(binary) and -(binary) special cases
-	  [Feature #9048]
-
-Thu Oct 24 22:36:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* encoding.c (load_encoding): should preserve outer errinfo, so that
-	  expected exception may not be lost.  [ruby-core:57949] [Bug #9038]
-
-Fri Oct 18 02:10:00 2013  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): set ci->me to 0 when the
-	  original method of a refined method is undef to avoid SEGV.
-
-	* vm_method.c (rb_method_entry_without_refinements): return 0 when
-	  the original method of a refined method is undef to avoid SEGV.
-
-	* test/ruby/test_refinement.rb: related test.
-
-Fri Oct 18 02:05:45 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/file.c (rb_file_expand_path_internal): fix memory leaks at
-	  a non-absolute home exception.
-
-Thu Oct 10 01:14:37 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compar.c (cmp_eq): fail if recursion.  [ruby-core:57736] [Bug #9003]
-
-	* thread.c (rb_exec_recursive_paired_outer): new function which is
-	  combinnation of paired and outer variants.
-
-Thu Oct 10 01:07:37 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/tempfile.rb (Tempfile#unlink): finalizer is no longer needed
-	  after unlinking.  patched by by normalperson (Eric Wong) at
-	  [ruby-core:56521] [Bug #8768]
-
-Thu Oct 10 00:58:39 2013  Benoit Daloze  <eregontp@gmail.com>
-
-	* test/ruby/test_array.rb (test_count): add a test case for #count
-	  with an argument. See Bug #8654.
-
-Thu Oct 10 00:58:39 2013  Benoit Daloze  <eregontp@gmail.com>
-
-	* array.c (rb_ary_count): check length to avoid SEGV
-	  while iterating. Remove other pointer loop when arg is given.
-
-	* test/ruby/test_array.rb (test_count): add test for bug.
-	  [ruby-core:56072] [Bug #8654]
-
-Thu Oct 10 00:58:39 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* array.c (rb_ary_count): iterate items appropriately.
-	  [Bug #8654]
-
-Thu Oct 10 00:44:28 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (rb_fork_internal): remove cloexec setting on pipes
-	  created by rb_cloexec_pipe.  patch by normalperson (Eric Wong) at
-	  [ruby-core:56523].  [Bug #8769]
-
-Thu Oct 10 00:24:01 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* cont.c: disable FIBER_USE_NATIVE on GNU/Hurd because it doesn't
-	  support a combination getcontext() and threads. Patch by
-	  Gabriele Giacone (1o5g4r8o@gmail.com). [Bug #8990][ruby-core:57685]
-
-Mon Oct  7 21:03:54 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in, win32/Makefile.sub (FIBER_USE_NATIVE): move conditions
-	  from cont.c
-
-Thu Oct 10 00:17:56 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* test/dl/test_base.rb: {libc, libm} detection now handle GNU/Hurd
-	  correctly. Patch by Gabriele Giacone (1o5g4r8o@gmail.com).
-	  [Bug #8937][ruby-core:57311]
-	* test/fiddle/helper.rb: ditto.
-
-Thu Oct 10 00:00:30 2013  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.strptime): Time.strptime('0', '%s') returns local
-	  time Time object as Ruby 2.0 and before.
-
-Thu Oct 10 00:00:30 2013  Tanaka Akira  <akr@fsij.org>
-
-	* lib/time.rb (Time.strptime): Use :offset.
-	  Patch by Felipe Contreras.  [ruby-core:57694]
-
-Wed Oct  9 23:32:37 2013  Koichi Sasada  <ko1@atdot.net>
-
-	* gc.c (rb_gc_disable): do rest_sweep() before disable GC.
-	  This fix may solve a failure of
-	  TestTracepointObj#test_tracks_objspace_events
-	  [test/-ext-/tracepoint/test_tracepoint.rb:43].
-
-Sat Oct  5 02:14:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_close_read): duplex IO should wait its child process
-	  even after close_read.
-
-Sat Oct  5 02:14:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (rb_io_close_read): keep fptr in write_io to be discarded, to
-	  fix freed pointer access when it is in use by other threads, and get
-	  rid of potential memory/fd leak.
-
-Sat Oct  5 01:59:50 2013  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* vm_method.c (rb_undef): raise a NameError if the original method
-	  of a refined method is not defined.
-
-	* vm_insnhelper.c (rb_method_entry_eq): added NULL check to avoid SEGV.
-
-	* test/ruby/test_refinement.rb: related test.
-
-Sat Oct  5 00:16:33 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* process.c (rb_daemon): daemon(3) is implemented with fork(2).
-	  Therefore it needs rb_thread_atfork(). (and revert r41903)
-
-Sat Oct  5 00:16:33 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (fork_daemon): kill the other threads all and abandon the
-	  kept mutexes.
-
-Sat Oct  5 00:16:33 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* process.c (fork_daemon): kill the other threads all and abandon the
-	  kept mutexes.
-
-Tue Oct  1 00:28:40 2013  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
-
-	* tool/make-snapshot: Fix order of priority for option parameter.
-
-Sat Sep 28 21:40:40 2013  Kenichi Kamiya  <kachick1@gmail.com>
-
-	* random.c (rb_random_ulong_limited): coerce before check negative.
-	  [Fixes GH-379]
-
-Fri Sep 27 01:24:20 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to Rubygems 2.0.10. [ruby-core:57360]
-	  [Backport #8950]
-	  the patch is provided by drbrain (Eric Hodel).
-	  this update contains a security fix for CVE-2013-4363.
-
-Fri Sep 27 01:11:21 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (lambda): adjust position to the beginning of the block.
-
-Fri Sep 27 01:02:59 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb (URI::Generic.find_proxy): return nil if
-	  http_proxy environment variable is empty string.
-	  [ruby-core:57140] [Bug #8898]
-
-Fri Sep 27 00:58:57 2013  Zachary Scott  <e@zzak.io>
-
-	* lib/gserver.rb: [DOC] correct gserver.rb license [Bug #8913]
-
-Sun Sep 15 23:15:32 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to Rubygems 2.0.9. [ruby-core:57183]
-	  [Backport #8908]
-	  the patch is provided by drbrain (Eric Hodel).
-
-Sun Sep 15 22:59:04 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* tool/rbinstall.rb (Gem::Specification#initialize): default date to
-	  RUBY_RELEASE_DATE.  [ruby-core:57072] [Bug #8878]
-
-	* tool/rbinstall.rb (Gem::Specification#to_ruby): add date.
-
-Sun Sep 15 22:55:44 2013  Zachary Scott  <e@zzak.io>
-
-	* hash.c (rb_hash_aset): [DOC] Document key dup patch by @kachick
-	  [Fixes GH-382] https://github.com/ruby/ruby/pull/382
-
-Sun Sep 15 22:03:01 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vsnprintf.c (MAXEXP, MAXFRACT): calculate depending on constants in
-	  float.h.
-
-	* vsnprintf.c (BSD_vfprintf): limit length for cvt() to get rid of
-	  buffer overflow.  [ruby-core:57023] [Bug #8864]
-
-	* vsnprintf.c (exponent): make expbuf size more precise.
-
-Sat Sep 14 00:01:20 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.8. [ruby-core:57155]
-	  [Backport #8900]
-	  the patch is provided by drbrain (Eric Hodel).
-	  this update contains a security fix for CVE-2013-4287.
-
-Fri Sep 13 23:20:29 2013  Kenichi Kamiya  <kachick1@gmail.com>
-
-	* object.c (Init_Object): undef Module#prepend_features on Class, as
-	  well as Module#append_features.  [Fixes GH-376]
-
-	* test_class.rb: Added test for above. And ensure type checking
-	  on similar methods as module_function.
-
-Fri Sep 13 23:16:12 2013  Zachary Scott  <e@zzak.io>
-
-	* enumerator.c: [DOC] Remove reference to Enumerator::Lazy#cycle
-	  Patch by @kachick [Fixes GH-372]
-	  https://github.com/ruby/ruby/pull/372
-
-Fri Sep 13 22:40:28 2013  Koichi Sasada  <ko1@atdot.net>
-
-	* vm_insnhelper.c (vm_search_super_method): use ci->argc instead of
-	  ci->orig_argc. ci->argc can be changed by splat arguments.
-	  [ruby-list:49575]
-	  This fix should be applied to Ruby 2.0.0 series.
-
-	* test/ruby/test_super.rb: add a test for above.
-
-Fri Sep 13 01:44:54 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* thread.c (rb_mutex_unlock): Mutex#unlock no longer raise
-	  an exception even if uses on trap. [Bug #8891]
-
-Fri Sep 13 01:09:59 2013  Shota Fukumori  <sorah@tubusu.net>
-
-	* vm_backtrace.c (vm_backtrace_to_ary): Ignore the second argument if
-	  it is nil. [Bug #8884] [ruby-core:57094]
-
-	* test/ruby/test_backtrace.rb (test_caller_with_nil_length):
-	  Test for above.
-
-Fri Sep 13 00:57:54 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (method_entry_i): should exclude refined methods from
-	  instance method list.  [ruby-core:57080] [Bug #8881]
-
-Fri Sep 13 00:33:09 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* vm_eval.c (vm_call0): fix prototype, the id parameter should be of
-	  type ID, not VALUE
-
-	* vm_insnhelper.c (check_match): the rb_funcall family of functions
-	  does not care about refinements. We need to use
-	  rb_method_entry_with_refinements instead to call === with
-	  refinements. Thanks to Jon Conley for reporting this bug.
-	  [ruby-core:57051] [Bug #8872]
-
-	* test/ruby/test_refinement.rb: add test
-
-Fri Sep 13 00:18:55 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* enumerator.c (lazy_zip_func): fix non-single argument.  fix
-	  out-of-bound access and pack multiple yielded values.
-	  [ruby-core:56383] [Bug #8735]
-
-Thu Sep 12 01:44:01 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (str_gsub): use BEG(0) for whole matched position not
-	  return value from rb_reg_search(), for \K matching.
-	  [ruby-dev:47694] [Bug #8856]
-
-Thu Sep 12 01:34:07 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* object.c (rb_class_inherited_p): allow iclasses to be tested for
-	  inheritance. [Bug #8686] [ruby-core:56174]
-
-	* test/ruby/test_method.rb: add test
-
-Thu Sep 12 01:18:44 2013  Michal Rokos  <michal@rokos.cz>
-
-	* configure.in (sys/pstat.h): fix missing header check for
-	  missing/setproctitle.c on HP-UX.  [ruby-core:56644] [Bug #8792]
-
-Thu Sep 12 01:02:56 2013  Benoit Daloze  <eregontp@gmail.com>
-
-	* test/ruby/test_time.rb: use the in_timezone() helper
-	  and define it at the top with other helpers.
-
-Thu Sep 12 01:02:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* time.c (time_mload): ignore auxiliary data, offset and zone, if
-	  invalid.  [ruby-core:56648] [Bug #8795]
-
-Thu Sep 12 00:22:22 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* variable.c (classname): the name of class that has
-	  non class id should not be nil. This bug was introduced
-	  in r36577.
-
-	* test/thread/test_cv.rb: test for change.
-
-Thu Aug 29 21:51:33 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/zlib/zlib.c (zstream_run):  Fix handling of deflate streams that
-	  need a dictionary but are being decompressed by Zlib::Inflate.inflate
-	  (which has no option to set a dictionary).  Now Zlib::NeedDict is
-	  raised instead of crashing.  [ruby-trunk - Bug #8829]
-	* test/zlib/test_zlib.rb (TestZlibInflate):  Test for the above.
-
-Thu Aug 29 21:28:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): a method entry refers the based
-	  class/module, so should search superclass from the origin i-class
-	  where the entry belongs to, to get rid of infinite loop when zsuper
-	  in a prepended class/module.  [ruby-core:54105] [Bug #8238]
-
-Fri Aug 23 01:16:00 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/date/date_parse.c (rfc2822_cb): check if wday is given, since it
-	  can be omitted.
-
-Fri Aug 23 00:55:02 2013  Tanaka Akira  <akr@fsij.org>
-
-	* gc.c (getrusage_time): Fallback clock_gettime to getrusage when
-	  clock_gettime fails.
-	  Reported by Eric Saxby.  [ruby-core:56762] [Bug #8805]
-	  
-Sat Aug 17 00:42:12 2013  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
-
-	* parse.y: fix build error with bison-3.0.
-
-Sat Aug 17 00:39:20 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/webrick/test_cgi.rb (TestWEBrickCGI#{start_cgi_server,test_cgi}):
-	  mswin is not only mswin32 but also mswin64. [Bug #8746]
-
-Sat Aug 17 00:36:24 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* test/openssl/test_ssl.rb: Fix test for CVE-2013-4073.
-	  Patch by Antonio Terceiro. [Bug #8750] [ruby-core:56437]
-
-Sat Aug 17 00:32:17 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: update to RubyGems 2.0.7. the patch by drbrain.
-	  [ruby-core:56633] [Backport #8787]
-
-Sat Aug 10 23:59:47 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/coverage/test_coverage.rb (TestCoverage#test_big_code): use `1'
-	  instead of `p' to get rid of a side effect.
-	  Kernel#p without any argument seems to do nothing, but flushes stdout.
-	  and, if stdout is redirected to file, fsync() will be called on
-	  Windows.  so, when running test-all on Windows with redirection, such
-	  as CI environment, this test took a lot of time.
-
-Sun Aug  4 22:42:16 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* win32/win32.c (wrename): use MoveFileExW instead of MoveFileW,
-	  because the latter fails on cross device file move of some
-	  environments.
-	  fix [ruby-core:53492] [Bug #8109]
-	  reported by mitchellh (Mitchell Hashimoto)
-
-Sat Aug  3 23:02:09 2013  Tanaka Akira  <akr@fsij.org>
-
-	* ext/extmk.rb (extmake): Invoke Logging::log_close in a ensure
-	  clause.
-
-Sat Aug  3 23:02:09 2013  Tanaka Akira  <akr@fsij.org>
-
-	* ext/extmk.rb (extmake): Use Logging.open to switch stdout and
-	  stderr.  Delay Logging::log_close until the failure message is
-	  written.  Write the failure message only if log file is opened.
-
-	* lib/mkmf.rb (Logging.log_opened?): New method.
-
-	  [ruby-dev:47215] [Bug #8209]
-
-Sat Aug  3 22:46:19 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (xsystem): expand environment variable in all macros not
-	  expanded with RbConfig.  [Bug #8702]
-
-	* test/mkmf/test_framework.rb (create_framework): replace all $@ not
-	  only once.
-
-Sat Aug  3 22:40:57 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (have_framework): allow header file to check.
-	  [ruby-core:55745] [Bug #8593]
-
-Sat Aug  3 22:24:44 2013  Shota Fukumori  <her@sorah.jp>
-
-	* lib/uri/common.rb (URI.decode_www_form_component):
-	  Don't raise error when str includes multibyte characters.
-
-Sun Jul 28 22:00:10 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* rational.c (f_round_common): Rational is expected to be returned by
-	  Rational#*, but mathn.rb breaks that assumption.  [ruby-core:56177]
-	  [Bug #8687]
-
-Sun Jul 28 21:50:34 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* io.c (io_getpartial): use rb_str_locktmp_ensure().
-	  [ruby-core:56121] [Bug #8669]
-
-	* io.c (rb_io_sysread): ditto.
-
-	* test/ruby/test_io.rb: add tests for above.
-
-Sun Jul 28 21:50:34 2013  Masaki Matsushita  <glass.saga@gmail.com>
-
-	* string.c: add internal API rb_str_locktmp_ensure().
-
-	* io.c (io_fread): use rb_str_locktmp_ensure().
-	  [ruby-core:56121] [Bug #8669]
-
-	* test/ruby/test_io.rb: add a test for above.
-
-Sun Jul 28 21:44:57 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/openssl/ossl_asn1.c (asn1time_to_time):  Implement YYMMDDhhmmZ
-	  format for ASN.1 UTCTime.  [ruby-trunk - Bug #8664]
-	* test/openssl/test_asn1.rb:  Test for the above.
-
-Fri Jul 26 00:38:58 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.6. [ruby-core:56160]
-	  [Backport #8682]
-
-Wed Jul 24 22:35:32 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* lib/uri/generic.rb (find_proxy): raise BadURIError if the URI is
-	  a relative URI. [Bug #8645]
-
-Wed Jul 24 01:13:02 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_f_lambde): restore the declaration of
-	  rb_f_lambda() for backword compatibility. and mark it as deprecated.
-
-Tue Jul 23 01:36:43 2013  Zachary Scott  <e@zzak.io>
-
-	* lib/rubygems/psych_additions.rb: Ignore Psych docs here
-
-Tue Jul 23 01:34:00 2013  Koichi Sasada  <ko1@atdot.net>
-
-	* test/test_tracer.rb: catch up recent rubygems changes.
-
-Tue Jul 23 01:28:54 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* lib/rubygems: Update to RubyGems 2.0.5.
-	  The patch provided by drbrain (Eric Hodel). [ruby-core:55896]
-	  [Backport #8617]
-
-	* test/rubygems:  Tests for the above.
-
-Tue Jul 23 00:00:27 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (eval_string_with_cref): use the given file name unless
-	  eval even if scope is given.  additional fix for [Bug #8436].
-	  based on the patch by srawlins at [ruby-core:56099] [Bug #8662].
-
-Sat Jul 20 23:49:33 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/drb/drbtest.rb (Drb{Core,Ary}#teardown): retry Process.kill
-	  if it fails with Errno::EPERM on Windows (workaround).
-	  [ruby-dev:47245] [Bug #8251]
-
-Sat Jul 20 23:31:11 2013  Aman Gupta  <tmm1@ruby-lang.org>
-
-	* iseq.c (iseq_location_setup): re-use existing string when iseq has
-	  the same path and absolute_path. [Bug #8149]
-
-Sun Jul 14 00:18:08 2013  Zachary Scott  <e@zzak.io>
-
-	* sprintf.c: Fix typo patch by @hynkle [Fixes GH-357]
-	  https://github.com/ruby/ruby/pull/357
-
-Sun Jul 14 00:17:07 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* man/ri.1: Incorrect use of .Dd macro [Bug #8620] by Tristan Hill
-
-Sun Jul 14 00:15:26 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* lib/logger.rb: Use :call-seq: for method signature rdoc
-
-Sun Jul 14 00:13:01 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
-
-	* test/net/http/test_http.rb (TestNetHTTP_v1_2#test_get,
-	  TestNetHTTP_v1_2_chunked#test_get): shouldn't check
-	  HttpResponse#decode_content if Zlib is not available.
-	  ko1 complained via IRC.
-
-Sat Jul 13 23:50:00 2013  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: fixed coding error [ruby-core:55337].
-	  reported by Riley Lynch.
-
-Sat Jul 13 23:50:00 2013  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_core.c: fixed a bug [ruby-core:55295].  reported
-	  by Riley Lynch.
-
-Sat Jul 13 23:41:25 2013  Tadayoshi Funaba  <tadf@dotrb.org>
-
-	* ext/date/date_parse.c (date_zone_to_diff): [ruby-core:55831].
-
-Sat Jul 13 23:34:13 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* object.c: Fix rdoc for Kernel#<=>. [Fix GH-352]
-
-Sat Jul 13 23:29:51 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#mode_to_s): Define mode_to_s() also
-	  as singleton method, or FileUtils.chmod fails in verbose mode.
-
-Sat Jul 13 23:27:12 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#chown, FileUtils#chown_R): If user
-	  and group are both nil, print ":".
-
-Sat Jul 13 23:16:49 2013  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (bigrsh_bang): Fix bignum digits overrun.
-
-Sat Jul 13 23:16:49 2013  Tanaka Akira  <akr@fsij.org>
-
-	* bignum.c (biglsh_bang): Fix bignum digits under-run.
-
-Sat Jul 13 22:45:10 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_DTRACE_POSTPROCESS): dtrace version SUN D 1.11
-	  introduces a check in the dtrace compiler to ensure that probes
-	  actually exist. If there are no probes, then the -G step will
-	  fail. As this test is only being used to determine whether -G is
-	  necessary (for instance, on OSX it is not), adding a real probe to
-	  the conftest allows it to succeed on newer versions of dtrace.
-	  Patch by Eric Saxby <sax AT livinginthepast.org> at
-	  [ruby-core:55826].  [Fix GH-351], [Bug #8606].
-
-Sat Jul 13 22:41:20 2013  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* test/openssl/test_x509crl.rb: Remove unused variable.
-	  [ruby-core:53501] [Bug #8114]
-
-	  Thanks, Vipul Amler, for pointing this out!
-
-Sun Jul  7 02:00:41 2013  Martin Bosslet  <Martin.Bosslet@gmail.com>
-
-	* lib/openssl/ssl.rb: Fix SSL client connection crash for SAN marked
-	  critical.
-	  The patch for CVE-2013-4073 caused SSL crash when a SSL server returns
-	  the certificate that has critical SAN value.  X509 extension could
-	  include 2 or 3 elements in it:
-
-	  [id, criticality, octet_string] if critical,
-	  [id, octet_string] if not.
-
-	  Making sure to pick the last element of X509 extension and use it as
-	  SAN value.
-	  [ruby-core:55685] [Bug #8575]
-
-	  Thank you @nahi for providing the patch!
-
-Sun Jul  7 01:58:25 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#symbolic_modes_to_i): Fix the wrong
-	  character class [+-=], which happened to match all desired
-	  characters but also match undesired characters.
-
-Sun Jul  7 01:54:44 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/fileutils.rb (FileUtils#chown, FileUtils#chown_R): Fix the
-	  wrong output message when user is nil, which should be "chown
-	  :group file" instead of "chown group file".
-
-Fri Jul  5 00:55:05 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* regcomp.c (): Merge Onigmo 5.13.5 23b523076d6f1161.
-
-	  * [bug]  (thanks Akinori MUSHA and Ippei Obayashi)
-	           Fix a renumbering bug in condition regexp with a named
-	           capture. [Bug #8583]
-	  * [spec] (thanks Akinori MUSHA)
-	    Allow ENCLOSE_OPTION in look-behind.
-
-Wed Jul  3 23:31:26 2013  Shota Fukumori  <sorah@cookpad.com>
-
-	* lib/mkmf.rb (try_config): Fix to not replace $LDFLAGS with $libs
-	  (1.9.3 behavior) [ruby-core:55752] [Bug #8595]
-
-Tue Jul  2 03:06:38 2013  Kenta Murata  <mrkn@mrkn.jp>
-
-	* ext/bigdecimal/bigdecimal.c (BigMath_s_exp): Fix for the cases when
-	  the argument x is not a BigDecimal.
-	  This change is based on the patch made by Heesob Park and Garth Snyder.
-	  [Bug #6862] [ruby-core:47145]
-	  [Fix GH-332] https://github.com/ruby/ruby/pull/332
-
-Fri Jun 28 02:20:13 2013  Aman Gupta  <ruby@tmm1.net>
-
-	* compile.c (iseq_add_mark_object): Use new rb_iseq_add_mark_object().
-
-	* insns.def (setinlinecache): Ditto.
-
-	* iseq.c (rb_iseq_add_mark_object): New function to allocate
-	  iseq->mark_ary on demand. [Bug #8142]
-
-	* iseq.h (rb_iseq_add_mark_object): Ditto.
-
-	* iseq.c (prepare_iseq_build): Avoid allocating mark_ary until needed.
-
-	* iseq.c (rb_iseq_build_for_ruby2cext): Ditto.
-
-Thu Jun 27 20:10:56 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/openssl/lib/openssl/ssl.rb (verify_certificate_identity): fix
-	  hostname verification. Patched by nahi.
-
-	* test/openssl/test_ssl.rb (test_verify_certificate_identity): test for
-	  above.
-
-
-Thu Jun 27 13:16:40 2013  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
-
-	* test/rubygems/test_gem_installer.rb (test_install_extension_flat):
-	  use ruby in build directory in case ruby is not installed.
-	  [ruby-core:53265] [Bug #8058]
-
-Wed Jun 26 23:05:34 2013  Hiroshi Shirosaki  <h.shirosaki@gmail.com>
-
-	* test/ruby/test_io.rb (TestIO#test_write_32bit_boundary): skip if
-	  writing a file is slow.
-	  [ruby-core:55541] [Bug #8519]
-
-Wed Jun 26 22:42:36 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb: should use expanded values for header directories
-	  unless extmk.  patch by vo.x (Vit Ondruch) at [ruby-core:55653]
-	  [Bug #8115], rhbz#921650.
-
-Wed Jun 26 02:25:52 2013  Akinori MUSHA  <knu@iDaemons.org>
-
-	* lib/rubygems/ext/builder.rb (Gem::Ext::Builder.make): Pass
-	  DESTDIR via command line to override what's in MAKEFLAGS.  This
-	  fixes an installation problem under a package building
-	  environment where DESTDIR is specified in the (parent) command
-	  line. [Fixes GH-327]
-
-Tue Jun 25 00:12:19 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* array.c: Return value in Array overview example found by @PragTob
-	  [Fix GH-336] https://github.com/ruby/ruby/pull/336
-
-Tue Jun 25 00:11:46 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* array.c (rb_ary_zip): typo by @PragTob [Fix GH-337]
-	  https://github.com/ruby/ruby/pull/337
-
-Tue Jun 25 00:10:54 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* win32/README.win32: grammar typo by @blankenshipz [Fix GH-334]
-	  https://github.com/ruby/ruby/pull/334
-
-Sun Jun 23 00:03:18 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* ext/etc/etc.c (etc_getpwnam): use PRIsVALUE in format string instead
-	  of %s and RSTRING_PTR
-
-	* ext/etc/etc.c (etc_getgrnam): ditto
-
-Sat Jun 22 00:54:41 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems:  Update to RubyGems 2.0.3
-
-	* test/rubygems:  Tests for the above.
-
-	* NEWS:  Added RubyGems 2.0.3 note.
-
-Wed Jun 19 04:20:31 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_call_method): ensure methods of type
-	  VM_METHOD_TYPE_ATTR_SET are called with 1 argument
-
-	* test/ruby/test_module.rb (class TestModule): add test
-
-	[ruby-core:55543] [Bug #8540]
-
-Wed Jun 19 03:54:04 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* defs/id.def (predefined): add "idProc".
-
-	* proc.c (mnew, mproc, mlambda): use predefined IDs.
-
-	* vm.c (Init_VM): ditto.
-
-Wed Jun 19 03:54:04 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* include/ruby/intern.h (rb_block_lambda): add declaration instead of
-	  deprecated rb_f_lambda.
-
-Wed Jun 19 03:24:07 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* include/ruby/ruby.h, vm_eval.c (rb_funcall_with_block):
-	  new function to invoke a method with a block passed
-	  as an argument.
-
-	* string.c (sym_call): use the above function to avoid
-	  a block sharing. [ruby-dev:47438] [Bug #8531]
-
-	* vm_insnhelper.c (vm_yield_with_cfunc): don't set block
-	  in the frame.
-
-	* test/ruby/test_symbol.rb (TestSymbol#test_block_given_to_proc):
-	  run related tests.
-
-Wed Jun 19 03:06:57 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* test/ruby/test_proc.rb (TestProc#test_block_given_method_to_proc):
-	  run test for r41359.
-
-Wed Jun 19 03:06:57 2013  Kazuki Tsujimoto  <kazuki@callcc.net>
-
-	* include/ruby/intern.h, proc.c (rb_method_call_with_block):
-	  new function to invoke a Method object with a block passed
-	  as an argument.
-
-	* proc.c (bmcall): use the above function to avoid a block sharing.
-	  [ruby-core:54626] [Bug #8341]
-
-	* test/ruby/test_proc.rb (TestProc#test_block_persist_between_calls):
-	  run related tests.
-
-Tue Jun 18 02:49:20 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/envutil.rb (assert_separately): stop_auto_run of
-	  Test::Unit::Runner to prevent auto runner use ARGV.
-
-	* test/ruby/envutil.rb (assert_separately): add $: to separate process.
-
-	* test/ruby/envutil.rb (assert_separately): fail if stderr is not
-	  empty and ignore_stderr is false.
-
-Tue Jun 18 02:21:54 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* test/ruby/envutil.rb (EnvUtil.with_default_external): add for
-	  changing Encoding.default_external without warnings.
-
-	* test/ruby/envutil.rb (EnvUtil.with_default_internal): ditto.
-
-	* test/ruby/test_io_m17n.rb: use above with_default_external.
-
-Tue Jun 18 00:43:27 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* vm_backtrace.c: Update rdoc for Backtrace#label with @_ko1
-
-Tue Jun 18 00:34:57 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-merge revision(s) 41347: [Backport #5048] [Backport #5465] [Backport #8319]
-
-        * ext/tk/extconf.rb: support s390x (Thanks to bkabrda) [Bug #5465]
-
-	* ext/tk/extconf.rb: apply [Bug #5048]
-
-	* ext/tk/lib/tk/canvas.rb,ext/tk/sample/demos-{en,jp}/{tree.rb,widget}:
-	  fix bug (Thanks to zzak) [ruby-trunk - Bug #8319]
-
-Sun Jun 16 01:56:54 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* array.c (FL_SET_EMBED): shared object is frozen even when get
-	  unshared.
-
-	* array.c (rb_ary_modify): ARY_SET_CAPA needs unshared array.
-
-Sun Jun 16 01:32:26 2013  TAKANO Mitsuhiro <tak@no32.tk>
-
-	* insns.def: fix condition.
-
-Sun Jun 16 01:22:35 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* ext/socket/extconf.rb:  Enable RFC 3542 IPV6 socket options for OS X
-	  10.7+.  [ruby-trunk - Bug #8517]
-
-Sun Jun 16 01:11:10 2013  Koichi Sasada  <ko1@atdot.net>
-
-	* compile.c (rb_iseq_compile_node): fix location of a `trace'
-	  instruction (b_return event).
-	  [ruby-core:55305] [ruby-trunk - Bug #8489]
-	  (need a backport to 2.0.0?)
-
-	* test/ruby/test_settracefunc.rb: add a test.
-
-Sun Jun 16 00:30:56 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_eval.c (eval_string_with_cref): propagate absolute path from the
-	  binding if it is given explicitly.  patch by Gat (Dawid Janczak) at
-	  [ruby-core:55123]. [Bug #8436]
-
-Wed Jun 12 23:41:21 2013  NARUSE, Yui  <naruse@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_block_args): partially revert r41019.
-	  The code is not useless.
-
-Wed Jun 12 23:41:21 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_insnhelper.c (vm_yield_setup_block_args): split single parameter
-	  if any keyword arguments exist, and then extract keyword arguments.
-	  [ruby-core:55203] [Bug #8463]
-
-Wed Jun 12 23:05:41 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* io.c (io_getc): fix 7bit coderange condition, check if ascii read
-	  data instead of read length. [ruby-core:55444] [Bug #8516]
-
-Sun Jun  9 02:27:07 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* lib/mkmf.rb (install_dirs, with_destdir): prefix with DESTDIR
-	  directories to install only unless bundled extension libraries.
-	  [ruby-core:53502] [Bug #8115]
-
-Sun Jun  9 02:17:16 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* class.c (include_modules_at): invalidate method cache if included
-	  module contains constants
-
-	* test/ruby/test_module.rb: add test
-
-Sun Jun  9 01:59:39 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-merge revision 40783 (partially): [Backport #8413]
-
-	* win32/Makefile.sub: fix a typo in config.h.
-
-Sun Jun  9 01:38:55 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* intern.h: remove dangling rb_class_init_copy declaration
-	  [ruby-core:55120] [Bug #8434]
-
-Sun Jun  9 01:30:57 2013  Shugo Maeda  <shugo@ruby-lang.org>
-
-	* lib/net/imap.rb (capability_response): should ignore trailing
-	  spaces.  Thanks, Peter Kovacs.  [ruby-core:55024] [Bug #8415]
-
-	* test/net/imap/test_imap_response_parser.rb: related test.
-
-Wed Jun  5 00:38:46 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* ext/zlib/zlib.c (gzfile_read, gzfile_read_all, gzfile_getc),
-	  (gzreader_gets): check EOF.  [ruby-core:55220] [Bug #8467]
-
-Wed Jun  5 00:32:18 2013  Tanaka Akira  <akr@fsij.org>
-
-	* test/ruby/test_require.rb: Remove temporally files in the tests.
-
-	* test/ruby/test_rubyoptions.rb: Ditto.
-
-	* test/logger/test_logger.rb: Ditto.
-
-	* test/psych/test_psych.rb: Ditto.
-
-	* test/readline/test_readline.rb: Ditto.
-
-	* test/syslog/test_syslog_logger.rb: Ditto.
-
-	* test/webrick/test_httpauth.rb: Ditto.
-
-	* test/zlib/test_zlib.rb: Ditto.
-
-Wed Jun  5 00:08:55 2013  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* dir.c (bracket): fix copy-paste error.  When the first and last
-	  characters of fnmatch range have different length, fnmatch may
-	  have wrongly matched a path that does not really match.
-	  Coverity Scan found this bug.
-
-Wed Jun  5 00:04:12 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* string.c (rb_str_quote_unprintable): check if argument is a string.
-
-Tue Jun  4 23:42:18 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* load.c (loaded_feature_path): fix invalid read by index underflow.
-	  the beginning of name is also a boundary as well as just after '/'.
-
-Tue Jun  4 23:32:12 2013  Charlie Somerville  <charliesome@ruby-lang.org>
-
-	* variable.c (set_const_visibility): use rb_frame_this_func() instead
-	  of rb_frame_callee() for getting the name of the called method
-
-	* test/ruby/test_module.rb: add test for private_constant with no args
-
-Tue Jun  4 23:27:24 2013  Yusuke Endoh  <mame@tsg.ne.jp>
-
-	* vm_insnhelper.c (vm_callee_setup_keyword_arg,
-	  vm_callee_setup_arg_complex): consider a hash argument for keyword
-	  only when the number of arguments is more than the expected
-	  mandatory parameters.  [ruby-core:53199] [ruby-trunk - Bug #8040]
-
-	* test/ruby/test_keyword.rb: update a test for above.
-
-Tue Jun  4 00:46:05 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* win32/win32.c (setup_overlapped, finish_overlapped): extract from
-	  rb_w32_read() and rb_w32_write().
-
-Tue Jun  4 00:02:45 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_tag): move jmpbuf between tag and prev so ensure to
-	  be accessible.
-
-Tue Jun  4 00:02:45 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* eval_intern.h (TH_PUSH_TAG): ensure jmpbuf to be accessible before
-	  pushing tag to get rid of unaccessible tag by stack overflow.
-
-Mon Jun  3 23:22:58 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* compile.c (iseq_compile_each): forward anonymous and first keyword
-	  rest argument one.  [ruby-core:55033] [Bug #8416].
-
-Sun Jun  2 22:39:24 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* range.c: Fix rdoc on Range#bsearch [Bug #8242] [ruby-core:54143]
-
-Mon May 20 04:00:48 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* lib/yaml.rb: YAML documentation from #8344 [Bug #8355]
-
-Wed May 15 23:22:09 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* include/ruby/intern.h: should include sys/time.h for struct timeval
-	  if it exists. [ruby-list:49363]
-
-Tue May 14 20:21:41 2013  Eric Hodel  <drbrain@segment7.net>
-
-	* lib/rubygems/config_file.rb:  Lazily load .gem/credentials to only
-	  check permissions when necessary.  RubyGems bug #465
-	* test/rubygems/test_gem_config_file.rb:  Test for the above.
-
-	* test/rubygems/test_gem_commands_push_command.rb:  Remove duplicated
-	  test.
-
-Tue May 14 20:11:00 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* ext/dl/lib/dl/func.rb (DL::Function#call): check tainted when
-	  $SAFE > 0.
-	* ext/fiddle/function.c (function_call): check tainted when $SAFE > 0.
-	* test/fiddle/test_func.rb (module Fiddle): add test for above.
-
-
-Sun May 12 22:42:25 2013  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
-
-	* signal.c (rb_f_kill): fixes typo. s/HAS_KILLPG/HAVE_KILLPG/.
-
-Sun May 12 04:23:06 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_peek_variable_name): treat invalid global, class,
-	  and instance variable names as mere strings rather than errors.
-	  [ruby-core:54885] [Bug #8375]
-
-Sun May 12 04:23:06 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* parse.y (parser_yylex): fail if $, @, @@ are not followed by a valid
-	  name character.  [ruby-core:54846] [Bug #8375].
-
-Sun May 12 02:50:30 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (RUBY_RM_RECURSIVE): this hack is needed by only
-	  autoconf 2.69 or earlier on darwin.
-
-Sun May 12 02:50:30 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* configure.in (rm, shvar_to_cpp, unexpand_shvar): local is not
-	  available on old shells.
-
-	* configure.in (shvar_to_cpp): escape quotes for old shells.
-	  [Bug #7959] [Bug #8071]
-
-Thu May  9 23:39:47 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mod_included_modules): should not include non-modules.
-	  [ruby-core:53158] [Bug #8025]
-
-Thu May  9 23:39:47 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* class.c (rb_mod_included_modules): should not include the original
-	  module itself.  [ruby-core:53158] [Bug #8025]
-
-Wed May  8 23:07:19 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defined): use vm_search_superclass() like as normal super
-	  call.  based on a patch <https://gist.github.com/wanabe/5520026> by
-	  wanabe.
-
-	* vm_insnhelper.c (vm_search_superclass): return error but not raise
-	  exceptions.
-
-	* vm_insnhelper.c (vm_search_super_method): check the result of
-	  vm_search_superclass and raise exceptions on error.
-
-Wed May  8 23:07:19 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* insns.def (defined): get method entry from the method top level
-	  frame, not block frame.  [ruby-core:54769] [Bug #8367]
-
-Wed May  8 01:18:41 2013  Tanaka Akira  <akr@fsij.org>
-
-	* internal.h (MUL_OVERFLOW_SIGNED_INTEGER_P): New macro.
-	  (MUL_OVERFLOW_FIXNUM_P): Ditto.
-	  (MUL_OVERFLOW_LONG_P): Ditto.
-
-	* array.c (rb_ary_product): Don't overflow on signed integer
-	  multiplication.
-
-	* numeric.c (fix_mul): Ditto.
-	  (int_pow): Ditto.
-
-	* rational.c (f_imul): Ditto.
-
-	* insns.def (opt_mult): Ditto.
-
-	* thread.c (sleep_timeval): Don't overflow on signed integer addition.
-
-	* bignum.c (rb_int2big): Don't overflow on signed integer negation.
-	  (rb_big2ulong): Ditto.
-	  (rb_big2long): Ditto.
-	  (rb_big2ull): Ditto.
-	  (rb_big2ll): Ditto.
-
-Tue May  7 20:13:12 2013  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
-
-	* test/ruby/test_thread.rb (invoke_rec): extend timeout 10 -> 50 sec,
-	  to investigate test failure on rubyci.
-	  http://a.mrkn.jp/~mrkn/chkbuild/mountain_lion/ruby-2.0.0-m64-o0/log/20130507T052909Z.log.html.gz
-
-Sat May  4 23:48:56 2013  Zachary Scott  <zachary@zacharyscott.net>
-
-	* doc/security.rdoc: Add note about reporting security vulns
-
-Sat May  4 23:44:54 2013  Nobuyoshi Nakada