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bug#12397: 24.2; gtk3 (from Macports); visible-bell trips cairo assertio
From: |
Chong Yidong |
Subject: |
bug#12397: 24.2; gtk3 (from Macports); visible-bell trips cairo assertion |
Date: |
Thu, 20 Sep 2012 10:59:20 +0800 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.2.50 (gnu/linux) |
Simon Leinen <simon.leinen@gmail.com> writes:
> My .emacs sets visible-bell to t. When I compile Emacs on MacOS X with
> Gtk3 (from Macports) as the X toolkit and run it, it crashes almost
> instantly with a failed assertion in cairo_pattern_destroy().
>
> I can reproduce this using emacs -Q by saying:
>
> M-: (setq visible-bell t)
> M-x ding
FWIW, I cannot reproduce this with either 24.2 or latest trunk,
x86_64-unknown-linux-gnu, GTK+ Version 3.4.2.
> #0 0x00007fff986dbce2 in __pthread_kill ()
...
> #4 0x0000000100ecd44c in cairo_pattern_destroy ()
> #5 0x0000000100eb600d in _cairo_gstate_set_source ()
> #6 0x0000000100eade35 in cairo_set_source ()
> #7 0x0000000100eadfc6 in cairo_set_source_rgb ()
> #8 0x00000001000ae32a in XTflash [inlined] () at
> /private/var/tmp/emacs/emacs-24.2/src/xterm.c:3050
> wakeup = {tv_sec = 4299859674, tv_usec = 537281269}
> window = (GdkWindow *) 0x0
> cr = (cairo_t *) 0x10293fa00
> flash_left = 4
> flash_height = 0
> height = 5203816
> flash_right = 556795399
> width = 556795399
A crash so deep in Cairo seems to indicate that this is a Cairo-on-Mac
bug. There doesn't seem to be anything suspicious in the Emacs part of
the backtrace.