ruby.git/signal.c, branch v2_1_7

merge revision(s) r49463: [Backport #10814]

2015-02-01T17:58:02+00:00

	signal.c: SIGBUS by stack overflow on Funtoo

	* signal.c (sigbus): seems that Funtoo Linux also delivers SIGBUS
  at stack overflow.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@49467 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r48884,r48885: [Backport #10615]

2015-01-21T16:15:13+00:00

	* signal.c (ruby_signal): since SIGKILL is not supported by MSVCRT,
	  should be treated before calling signal(3).
	  [Bug #10615]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@49370 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r47818,r47832: [Backport #9820]

2014-10-15T15:18:04+00:00

	* signal.c (rb_f_kill): should not ignore signal unless the
	  default handler is registered.  [ruby-dev:48592] [Bug #9820]

	* signal.c (rb_f_kill): get rid of deadlock as unhandled and
	  discarded signals do not make interrupt_cond signaled.
	  based on the patch by Kazuki Tsujimoto at [ruby-dev:48606].
	  [Bug #9820]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47956 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r46495,r46499: [Backport #9971]

2014-09-15T14:23:13+00:00

	signal.c: no cfunc frame at stack overflow

	* signal.c (check_stack_overflow): avoid pushing a cfunc frame,
  trying to fix stack overflow deadlock.
	* signal.c (check_stack_overflow): drop the last tag too close to
	  the fault page, to get rid of stack overflow deadlock.
	  [Bug #9971]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47597 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r45911,r45912,r45917,r45918,r45919: [Backport #9820]

2014-09-01T17:16:03+00:00

	* signal.c (rb_f_kill): directly enqueue an ignored signal to self,
	  except for SIGSEGV and SIGBUS.  [ruby-dev:48203] [Bug #9820]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47345 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r46233: [Backport #9878]

2014-06-29T17:56:19+00:00

	* signal.c (ruby_signal): should return either `old.sa_sigaction`
	  or `old.sa_handler`, depending on whether `SA_SIGINFO` is set in
	  `old.sa_flags`, because they may not be a union.
	  [ruby-core:62836] [Bug #9878]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46616 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r46194: [Backport #9835]

2014-06-23T15:02:21+00:00

	* signal.c (signal_exec): ignore immediate cmd for SIG_IGN

	* signal.c (trap_handler): set cmd to true for SIG_IGN

	* signal.c (trap): handle nil and true values for oldcmd
	  [Bug #9835]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46520 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

merge revision(s) r45517,r45544,r45924:

2014-06-06T16:23:54+00:00

	signal.c: check stack overflow by SP

	* signal.c (check_stack_overflow): raise SystemStackError if SP
  register and fault address is in the same page, on x86 linux.
  [EXPERIMENTAL]
	* signal.c (check_stack_overflow): Don't use ucontext_t if ucontext.h
	  is not available.
	  Fixes build on Android (x86).


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@46367 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

signal.c: fault address

2013-12-03T03:18:49+00:00

* signal.c (sigbus, sigsegv): show fault address in the bug message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43966 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

* eval_intern.h (SAVE_ROOT_JMPBUF): workaround for the failure of

2013-11-21T06:33:41+00:00

  test/ruby/test_exception.rb on Windows.
  wrap by __try and __exception statements on mswin to raise SIGSEGV
  when EXCEPTION_STACK_OVERFLOW is occurred, because MSVCRT doesn't
  handle the exception.
  however, (1) mingw-gcc doesn't support __try and __exception
  statements, and (2) we cannot retry SystemStackError after this
  change yet (maybe crashed) because SEH and longjmp() are too
  uncongenial.

* signal.c (check_stack_overflow, CHECK_STACK_OVERFLOW): now defined on
  Windows, too.

* thread_win32.c (ruby_stack_overflowed_p): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43748 b2dd03c8-39d4-4d8f-98ff-823fe69b080e