[cairo-bugs] [Bug 81699] [need testcase] Segfault sweep_line_delete on video playback (2)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81699

--- Comment #15 from Adrian Bunk <bunk at stusta.de> ---
Created attachment 105218
  --> https://bugs.freedesktop.org/attachment.cgi?id=105218&action=edit
Crash backtrace

Hi Chris,

thanks for the fix, it greatly increased stability.

But unfortunately sometimes there are still crashes.

Attached is a backtrace for the following (this is Debian 1.12.16-2 plus commit
13a09526 from master):

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff2cb0f98 in sweep_line_delete_edge (edge=0x7fffffff7b00, 
    sweep=0x7fffffff77f0)
    at /tmp/cairo-1.12.16/src/cairo-bentley-ottmann-rectangular.c:558
558         edge->next->prev = edge->prev;

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