str.encode doesn't have explicit invalid: :replace.
  workaround fix for see #8995

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43802 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* transcode.c (str_transcode0): fix segv in String.encode!.  now
  rb_str_scrub() can return nil.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43504 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* string.c (rb_str_scrub): export with fixed length arguments, and
  allow nil as replacement string instead of omitting.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43500 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  safe functions during garbage collection such as xfree().
  On default, T_DATA objects are freed at same points as fianlizers.
  This approach protects issues such as reported by [ruby-dev:35578].
  However, freeing T_DATA objects immediately helps heap usage.
  Most of T_DATA (in other words, most of dfree functions) are safe.
  However, we turned off RUBY_TYPED_FREE_IMMEDIATELY by default
  for safety.
* cont.c: ditto.
* dir.c: ditto.
* encoding.c: ditto.
* enumerator.c: ditto.
* error.c: ditto.
* file.c: ditto.
* gc.c: ditto.
* io.c: ditto.
* iseq.c: ditto.
* marshal.c: ditto.
* parse.y: ditto.
* proc.c: ditto.
* process.c: ditto.
* random.c: ditto.
* thread.c: ditto.
* time.c: ditto.
* transcode.c: ditto.
* variable.c: ditto.
* vm.c: ditto.
* vm_backtrace.c: ditto.
* vm_trace.c: ditto.
* ext/bigdecimal/bigdecimal.c: ditto.
* ext/objspace/objspace.c: ditto.
* ext/stringio/stringio.c: ditto.
* ext/strscan/strscan.c: ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43466 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* transcode.c (rb_econv_append): new function to append a string data
  with converting its encoding.  split from rb_econv_substr_append.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42853 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* transcode.c (rb_econv_substr_append): move loop condition after the
  conversion.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42852 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* transcode.c (rb_econv_substr_append): prevent src from GC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42851 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* encoding.c (rb_enc_associate_index): refill the terminator if it
  becomes longer than before.  [ruby-dev:47500] [Bug #8624]
* string.c (str_null_char, str_fill_term): get rid of out of bound
  access.
* string.c (rb_str_fill_terminator): add a parameter for the length of
  new terminator.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41930 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* transcode.c (str_encode_associate): fill terminator after conversion.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41921 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  when $SAFE is set to 4.  $SAFE=4 is now obsolete.
  [ruby-core:55222] [Feature #8468]

* object.c (rb_obj_untrusted, rb_obj_untrust, rb_obj_trust):
  Kernel#untrusted?, untrust, and trust are now deprecated.
  Their behavior is same as tainted?, taint, and untaint,
  respectively.

* include/ruby/ruby.h (OBJ_UNTRUSTED, OBJ_UNTRUST): OBJ_UNTRUSTED()
  and OBJ_UNTRUST() are aliases of OBJ_TAINTED() and OBJ_TAINT(),
  respectively.

* array.c, class.c, debug.c, dir.c, encoding.c, error.c, eval.c,
  ext/curses/curses.c, ext/dbm/dbm.c, ext/dl/cfunc.c,
  ext/dl/cptr.c, ext/dl/dl.c, ext/etc/etc.c, ext/fiddle/fiddle.c,
  ext/fiddle/pointer.c, ext/gdbm/gdbm.c, ext/readline/readline.c,
  ext/sdbm/init.c, ext/socket/ancdata.c, ext/socket/basicsocket.c,
  ext/socket/socket.c, ext/socket/udpsocket.c,
  ext/stringio/stringio.c, ext/syslog/syslog.c, ext/tk/tcltklib.c,
  ext/win32ole/win32ole.c, file.c, gc.c, hash.c, io.c, iseq.c,
  load.c, marshal.c, object.c, proc.c, process.c, random.c, re.c,
  safe.c, string.c, thread.c, transcode.c, variable.c,
  vm_insnhelper.c, vm_method.c, vm_trace.c: remove code for
  $SAFE=4.

* test/dl/test_dl2.rb, test/erb/test_erb.rb,
  test/readline/test_readline.rb,
  test/readline/test_readline_history.rb, test/ruby/test_alias.rb,
  test/ruby/test_array.rb, test/ruby/test_dir.rb,
  test/ruby/test_encoding.rb, test/ruby/test_env.rb,
  test/ruby/test_eval.rb, test/ruby/test_exception.rb,
  test/ruby/test_file_exhaustive.rb, test/ruby/test_hash.rb,
  test/ruby/test_io.rb, test/ruby/test_method.rb,
  test/ruby/test_module.rb, test/ruby/test_object.rb,
  test/ruby/test_pack.rb, test/ruby/test_rand.rb,
  test/ruby/test_regexp.rb, test/ruby/test_settracefunc.rb,
  test/ruby/test_struct.rb, test/ruby/test_thread.rb,
  test/ruby/test_time.rb: remove tests for $SAFE=4.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41259 b2dd03c8-39d4-4d8f-98ff-823fe69b080e