From: Steve Revilak <steve@srevilak.net>
To: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
Cc: 5333@debbugs.gnu.org
Subject: bug#5333: 23.1.91; NextStep/Mac OS X: emacs -nw crash in input_available_signal + 67 (keyboard.c:7514)
Date: Fri, 8 Jan 2010 21:52:09 -0500 [thread overview]
Message-ID: <20100109025209.GB406@srevilak.net> (raw)
In-Reply-To: <wlskagxctd.wl%mituharu@math.s.chiba-u.ac.jp>
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>From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
>According to the stack trace, the crash seems to happen by
>dereferencing NULL pointer (with some offset) in a non-main thread
>executing the following code in the SIGIO handler.
>
> if (input_available_clear_time)
> EMACS_SET_SECS_USECS (*input_available_clear_time, 0, 0);
>
>EMACS_SET_SECS_USECS consists of multiple instructions, and
>input_available_clear_time might be cleared to NULL by the main thread
>between the NULL-check and the completion of EMACS_SET_SECS_USECS in a
>non-main thread.
>
>Could you try the following patch for a while to see if it can avoid
>the issue?
YAMAMOTO,
Thank you for the patch. I'll will test it this week.
Steve Revilak
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next prev parent reply other threads:[~2010-01-09 2:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-07 15:09 bug#5333: 23.1.91; NextStep/Mac OS X: emacs -nw crash in input_available_signal + 67 (keyboard.c:7514) steve
2010-01-09 1:54 ` YAMAMOTO Mitsuharu
2010-01-09 2:52 ` Steve Revilak [this message]
2010-01-13 2:00 ` Steve Revilak
2010-01-13 5:00 ` YAMAMOTO Mitsuharu
2010-01-13 5:01 ` bug#5333: marked as done (23.1.91; NextStep/Mac OS X: emacs -nw crash in input_available_signal + 67 (keyboard.c:7514)) Emacs bug Tracking System
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