[xorg-bugzilla-noise] [Bug 1117] cw and cfb don't play nice together

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https://freedesktop.org/bugzilla/show_bug.cgi?id=1117        
   




------- Additional Comments From ajax at nwnk.net  2004-08-17 23:41 -------
Created an attachment (id=665)
 --> (https://freedesktop.org/bugzilla/attachment.cgi?id=665&action=view)
backtrace from the crash

from an optimized build, so the function arguments for the innermost frame are
a little funky.  nonetheless the segfault does happen on the indicated line,
because 'ps' is completely bogus.  PictureScreenPrivateIndex is -1 at this
point, and we call GetPictureScreen() about five lines earlier, so we're
indexing off the head of the array.  boom.        
   
   
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