ruby.h: fix rb_scan_args_trail_idx

	* include/ruby/ruby.h (rb_scan_args_trail_idx): fix the case both
	  of optional and rest arguments are defined.
	  [ruby-core:82427] [Bug #13830]

	* include/ruby/ruby.h (rb_scan_args_n_trail): ditto.
	non-keywords hash

	* class.c (rb_scan_args), include/ruby/ruby.h (rb_scan_args_set):
	  return non-keywords elements only in the last hash when keyword
	  arguments are extracted from it, as well as methods defined in
	  ruby level.  [ruby-core:82427] [Bug #13830]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59811 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	* gc.c (heap_page_resurrect): do not return tomb_pages when
	  page->freelist == NULL.
	  [Bug #12670]

	test for [Bug #12670]

	heap corruption by deferred free.
	gc.c: expand sorted pages

	* gc.c (heap_page_allocate): expand sorted pages before inserting
	  allocated new page.  [Bug #12670]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59302 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	thread.c: avoid busy looping on rb_thread_fd_close

	We no longer use it this function, but extensions do, and
	we need to ensure it continues to work for them.

	* thread.c (rb_thread_fd_close): schedule other threads in loop
	* ext/-test-/thread_fd_close/thread_fd_close.c: new file
	* ext/-test-/thread_fd_close/depend: ditto
	* ext/-test-/thread_fd_close/extconf.rb: ditto
	* test/-ext-/thread_fd_close/test_thread_fd_close.rb: new test
	* properties.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59295 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	fix RSTRUCT_LEN macro in public C API

	rb_struct_size returns an Integer VALUE, so it must be converted
	to a `long` for compatibility with previous Ruby C API versions.

	* ext/-test-/struct/len.c: new
	* test/-ext-/struct/test_len.rb: new
	* include/ruby/ruby.h (RSTRUCT_LEN): use NUM2LONG
	  [ruby-core:80692] [Bug #13439]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@58636 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	memory_status.c: support old Mac OS

	* ext/-test-/memory_status/memory_status.c (read_status): use
	  TASK_BASIC_INFO instead of MACH_TASK_BASIC_INFO on old Mac OS.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@58626 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	regparse.c: initialize return values

	* regparse.c (parse_char_class): initialize return values before
	  depth limit check.  returned values will be freed in callers
	  regardless the error.  [ruby-core:79624] [Bug #13234]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57909 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	eval.c: hide internal objects

	* eval.c (rb_ensure): veil internal exception objects not to leak
	  in ensure functions.  [ruby-core:79371] [Bug #13176]
	ensured.c: fix conflict

	* ext/-test-/exception/ensured.c (exc_raise): get rid of conflict
	  with raise(2) in the standard.  [ruby-core:79371] [Bug #13176]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@57885 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	[Feature #12142]
	See header of st.c for improvment details.

	You can see all of code history here:
	<https://github.com/vnmakarov/ruby/tree/hash_tables_with_open_addressing>

	This improvement is discussed at
	<https://bugs.ruby-lang.org/issues/12142>
	with many people, especially with Yura Sokolov.

	* st.c: improve st_table.

	* include/ruby/st.h: ditto.

	* internal.h, numeric.c, hash.c (rb_dbl_long_hash): extract a function.

	* ext/-test-/st/foreach/foreach.c: catch up this change.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56650 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56584 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

  is enabled or not.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56582 b2dd03c8-39d4-4d8f-98ff-823fe69b080e