merge revision(s) 43853: [Backport #9157]

	* 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]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43959 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 39594,39596: [Backport #8010]

	* enumerator.c (enumerator_with_index_i): allow Bignum as offset, to
	  get rid of conversion exception and integer overflow.
	  [ruby-dev:47131] [Bug #8010]

	* enumerator.c (enumerator_with_index):  Restore handling of a nil memo
	  from r39594.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43960 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43929: [Backport #9178]

	* 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]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@43961 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 39722: [Backport #9178]

	* enumerator.c (enumerator_with_index): try to convert given offset to
	  integer. fix bug introduced in r39594.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 41427:

	test_pty.rb: reap zombie

	* test/test_pty.rb (test_cloexec): reap zombie than leaving to
  detaching thread.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44182 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44086,44126: [Backport #9221]

	* 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]

	* 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]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44306 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43669,43672,43678: [Backport #8958]

	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] Document the required
	  +precision+ argument for Rational#to_d [Bug #8958]

	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] +precision+ is required

	* ext/bigdecimal/lib/bigdecimal/util.rb: [DOC] remove example of
	  Rational#to_d without argument. [Bug #8958]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44314 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 41759,41760,43356,43460,43677:

	* ruby_atomic.h (ATOMIC_CAS): suppress C4022 and C4047 warnings in
	  VC6.  only InterlockedCompareExchange is declared using PVOID.

	* ruby_atomic.h (rb_w32_atomic_cas): call InterlockedCompareExchange
	  directly.

	* ruby_atomic.h (ATOMIC_CAS): fix missing function call.

	* ruby_atomic.h (ATOMIC_SIZE_CAS): new macro, compare and swap size_t.

	* ruby_atomic.h (ATOMIC_SIZE_CAS): fix compile error on Solaris
	  since r43460.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44315 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43851,43882,43883,43995:

	* 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.

	* ruby_atomic.h: define ATOMIC_SIZE_CAS() with
	  __atomic_compare_exchange_n() and refactoring.

	* ruby_atomic.h: remove duplicate definisions between ATOMIC_XXX
	  and ATOMIC_SIZE_XXX.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44316 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43996:

	* ruby_atomic.h (ATOMIC_PTR_EXCHANGE): atomic exchange function for
	  a generic pointer.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44317 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43994: [Backport #9205]

	* 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]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44319 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44000: [Backport #9205]

	test_gc.rb: shorten

	* test/ruby/test_gc.rb (test_sweep_in_finalizer): omit iteration number to 2.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44322 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44307: [Backport #9199] [Backport #9272]

	* win32/Makefile.sub (fake.rb): fixed wrong RUBY_PLATFORM, to correctly
	  install win32.h.
	  [ruby-core:58801][Bug #9199] reported by arton.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44323 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44312,44318,44321: [Backport #9273]

	* 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.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44324 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 43685,43690,43705: [Backport #9110]

	* 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.

	* eval_jump.c (rb_exec_end_proc): unlink and free procs data before
	  calling for each procs.  [Bug #9110]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44325 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 44127: [Backport #9238]

	* insns.def: Fix optimization bug of Float#/ [Bug #9238]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44326 b2dd03c8-39d4-4d8f-98ff-823fe69b080e