[Bug 50791] New: incorrect rendering of a site in firefox while using cairo 1.12

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=50791

             Bug #: 50791
           Summary: incorrect rendering of a site in firefox while using
                    cairo 1.12
    Classification: Unclassified
           Product: xorg
           Version: unspecified
          Platform: x86 (IA32)
               URL: http://rohejorszaga.blog.hu/2012/06/03/erre_egyszeruen
                    _nem_talalok_szavakat_601?fullcommentlist=1#comments
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: galtgendo at o2.pl
         QAContact: xorg-team at lists.x.org


Created attachment 62676
  --> https://bugs.freedesktop.org/attachment.cgi?id=62676
screenshot of the corruption

This is kind of a followup of bug 47266.
I'm assigning it to driver people initially, just in case the fix from that bug
was incomplete.
While discussing this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=722975,
eventually this address:
http://rohejorszaga.blog.hu/2012/06/03/erre_egyszeruen_nem_talalok_szavakat_601?fullcommentlist=1#comments
came up.

To reproduce, cairo 1.12 and firefox built against system cairo is needed.

The display corruption covers whole area displaying the site, once it happens.

xorg-server 1.12.2
cairo 1.12.2
xf86-video-ati-6.14.4 (with patches from bug 47266)

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