[cairo-bugs] [Bug 59098] New: segfault in cairo-polygon-intersect.c: active_edges()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59098

          Priority: medium
            Bug ID: 59098
          Assignee: chris at chris-wilson.co.uk
           Summary: segfault in cairo-polygon-intersect.c: active_edges()
        QA Contact: cairo-bugs at cairographics.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: glin at suse.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 1.12.2
         Component: general
           Product: cairo

Created attachment 72609
  --> https://bugs.freedesktop.org/attachment.cgi?id=72609&action=edit
gdb backtrace

OS: openSUSE 12.2

When I used evince to open a pdf calendar, evince crashed immediately. The
backtrace showed it crashed in cairo-polygon-intersect.c: active_edges():

if unlikely ((right->deferred.other))

"right" was NULL, and it caused segfault.

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