merge revision(s) cf7d07570f50ef9c16007019afcff11ba6500d70: [Backport #18938]

	Dump non-ASCII char as unsigned

	Non-ASCII code may be negative on platforms plain char is signed.
	---
	 ext/objspace/objspace_dump.c   |  2 +-
	 test/objspace/test_objspace.rb | 15 +++++++++++++++
	 2 files changed, 16 insertions(+), 1 deletion(-)

3 files changed, 17 insertions, 2 deletions

diff --git a/ext/objspace/objspace_dump.c b/ext/objspace/objspace_dump.c
index cf7acb5c6f..47081754c9 100644
--- a/ext/objspace/objspace_dump.c
+++ b/ext/objspace/objspace_dump.c
@@ -141,7 +141,7 @@ dump_append_sizet(struct dump_config *dc, const size_t number)
 }
 
 static void
-dump_append_c(struct dump_config *dc, char c)
+dump_append_c(struct dump_config *dc, unsigned char c)
 {
     if (c <= 0x1f) {
         const unsigned int width = (sizeof(c) * CHAR_BIT / 4) + 5;
diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index a1954d56a9..bdc9c8c3d7 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -632,4 +632,19 @@ class TestObjSpace < Test::Unit::TestCase
       assert_equal '42', out[2]
     end
   end
+
+  def test_utf8_method_names
+    name = "utf8_❨╯°□°❩╯︵┻━┻"
+    obj = ObjectSpace.trace_object_allocations do
+      __send__(name)
+    end
+    dump = ObjectSpace.dump(obj)
+    assert_equal name, JSON.parse(dump)["method"], dump
+  end
+
+  private
+
+  def utf8_❨╯°□°❩╯︵┻━┻
+    "1#{2}"
+  end
 end
diff --git a/version.h b/version.h
index a9f5868a2f..ea82e737c8 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 3
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 63
+#define RUBY_PATCHLEVEL 64
 
 #define RUBY_RELEASE_YEAR 2022
 #define RUBY_RELEASE_MONTH 9