[cairo-bugs] [Bug 91647] New: use after free

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91647

            Bug ID: 91647
           Summary: use after free
           Product: cairo
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
          Assignee: chris at chris-wilson.co.uk
          Reporter: sixtysix at inwind.it
        QA Contact: cairo-bugs at cairographics.org

scan-build finds few use after free errors like this:

http://cgit.freedesktop.org/cairo/tree/test/png.c#n142

and this:

http://cgit.freedesktop.org/cairo/tree/test/pdf-mime-data.c#n145

but not this one:

http://cgit.freedesktop.org/cairo/tree/src/cairo-recording-surface.c#n1662

found by AddressSanitizer instead.

Unfortunately scan-build among real bugs reports many
false positives.

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