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Bug 622

Summary: windib sets SDL_HWPALETTE for >8 bit video modes; segfaults in SetGammaRamp
Product: SDL Reporter: Gregory Smith <wolfy>
Component: videoAssignee: Sam Lantinga <slouken>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2 CC: sezeroz
Version: 1.2.13Keywords: target-1.2.14
Hardware: x86   
OS: Windows (All)   
Attachments: dib-hwpalette-fix.patch

Description Gregory Smith 2008-09-04 17:55:41 UTC 
windib appears to always set the SDL_HWPALETTE flag in SetVideoMode, even when the bit depth is greater than 8. This can cause a segfault when SetGammaRamp is called, as it blindly tries to dereference the non-existent palette's colors.

I think the line video->flags |= SDL_HWPALETTE should be inside the scope of the preceeding if statement, as in the attached patch.
Comment 1 Gregory Smith 2008-09-04 17:56:47 UTC 
Created attachment 272 [details]
dib-hwpalette-fix.patch

I think this will fix the bug
Comment 2 Ryan C. Gordon 2009-09-13 16:33:29 UTC 
Tagging this bug with "target-1.2.14" so we can try to resolve it for SDL 1.2.14.

Please note that we may choose to resolve it as WONTFIX. This tag is largely so we have a comprehensive wishlist of bugs to examine for 1.2.14 (and so we can close bugs that we'll never fix, rather than have them live forever in Bugzilla).

--ryan.
Comment 3 Sam Lantinga 2009-09-26 22:40:05 UTC 
This is already fixed in subversion.  Thanks!