Fix for wrong fnmatch patttern

* dir.c (file_s_fnmatch): ensure that pattern does not contain a
  NUL character.  https://hackerone.com/reports/449617


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@67817 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	dir.c: check NUL bytes

	* dir.c (GlobPathValue): should be used in rb_push_glob only.
	  other methods should use FilePathValue.
	  https://hackerone.com/reports/302338

	* dir.c (rb_push_glob): expand GlobPathValue

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62999 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62801 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	rb_w32_ugetcwd: UTF-8 version getcwd

	* dir.c (rb_dir_getwd): convert from UTF-8.

	* win32/win32.c (w32_getcwd): codepage aware getcwd using
	  GetCurrentDirectoryW.
	potential memory leak

	* dir.c (rb_dir_getwd): get rid of potential memory leak.

	* util.c (ruby_getcwd): ditto.
	file.c: realpath in OS path encoding

	* dir.c (rb_dir_getwd_ospath): return cwd path in the OS path
	  encoding.

	* file.c (rb_realpath_internal): work in the OS path encoding
	load.c: cwd encoding

	* load.c (rb_get_expanded_load_path): save cwd cache in OS path
	  encoding, to get rid of unnecessary conversion and infinite
	  loading when it needs encoding conversion.
	  [ruby-dev:50221] [Bug #13863]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@62784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	error.c: refactor warning messages

	* error.c (with_warning_string): extract building warning message
	  string from variadic arguments.

	* error.c (syserr_warning): write warning message with the system
	  error message.

	error.c: warning functions

	* error.c: define warning functions in all combinations of
	  * no errno, system errno, argument
	  * without/with encoding
	  * enabled/disabled by default

	dir.c: err at glob failure

	* dir.c (glob_helper): raise a SystemCallError exception when
	  opendir() failed, except for ENOENT, ENOTDIR, and EACCES.  this
	  behavior predates 1.0; the comments in glob.c claimed that
	  glob() returned -1 on error but actualy the pointer to a global
	  variable, then dir_glob() did check only -1 as the comments, and
	  ignored actual errors.  [ruby-core:80226] [Bug #13276]

	dir.c: ruby_glob_funcs_t

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@61367 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

	 dir.c: getattrlist on OSX 10.5

	* dir.c (is_case_sensitive): use getattrlist() if fgetattrlist()
	  is unavailable, on OSX 10.5.  [ruby-core:68829] [Bug #11054]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* dir.c (rb_glob): merge rb_glob2 which is used only here.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56608 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* dir.c (to_be_ignored): remove duplicate inline modifier, and
  suppress a warning by VC.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56533 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* dir.c (do_opendir): retry after GC when the limit for open file
  descriptors reached.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56467 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* dir.c (rb_dir_s_empty_p): use rb_gc_for_fd for the condition to
  invoke GC by errno.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56466 b2dd03c8-39d4-4d8f-98ff-823fe69b080e