[Bug 22815] Alt.binz 0.28.5 gives access violation and fails to load settings.

wine-bugs at winehq.org wine-bugs at winehq.org
Mon May 24 03:56:32 CDT 2010


--- Comment #6 from Dmitry Timoshkov <dmitry at codeweavers.com>  2010-05-24 03:56:23 ---
Created an attachment (id=28227)
 --> (http://bugs.winehq.org/attachment.cgi?id=28227)
Use the whole allocated DIB memory as an image size

I think it's a bug in the application. Previously it was hidden by larger
bitmap allocation based on a larger reported font height. The application
accesses last byte in the DIB image, and the DIB fault handler doesn't
detect that, because it doesn't find the fault address inside the DIB
section. But actually that byte *is* inside of the allocated DIB region
because DIB memory is allocated using 64k granularity.

Moreever, DIB fault handler does have a check that the address is behind
the image size, and supposed to issue a warning in that case, but that check
is unreachable for some reason, probably the code was changed at some point.

Attached patch makes the application work.

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