[Intrepid] crash using the thumbnail plugin (in thumbPaintOutput at thumbnail.c)

[arno_b]

Binary package hint: compiz

On intrepid. Compiz: 1:0.7.8-0ubuntu4.1
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Mobility Radeon X1700
OpenGL version string: 2.1.8087 Release
2.6.27-8-generic #1 SMP Thu Nov 6 17:33:54 UTC 2008 i686 GNU/Linux

I can reproduce the crash everytime:
- activate the thumbnail plugin
- open several windows in a desktop
- put the last window in the first plan (see the screenshot)
- put your mouse on the last window in the program bar in order to see its thumbnail
- press alt-F4 to close the last window
-> I have a crash everytime

#1 0xb71c3c50 in thumbPaintOutput (s=0x9f88f40, sAttrib=0x807d500, transform=0xbfcf9ec4, region=0x9f43580, output=0x9f91990, mask=9) at thumbnail.c:1019
 sTransform = {m = {0.000781250012, 0, 0, 0, -0, -0.00124999997, -0, -0, 0, 0, 1, 0, -0.5, 0.49999997, -0.866025388, 1}}
 status = 1
 newMask = <value optimized out>
 ts = (ThumbScreen *) 0x0
#2 0xb71da647 in shiftPaintOutput (s=0x9f88f40, sAttrib=0x807d500, transform=0x8079860, region=0x9f43580, output=0x9f91990, mask=9) at shift.c:1392
 status = 1
 ss = (ShiftScreen *) 0xa4a80b0
#3 0xb77e2472 in resizePaintOutput (s=0x9f88f40, sAttrib=0x807d500, transform=0x8079860, region=0x9f43580, output=0x9f91990, mask=175921640) at ../../plugins/resize.c:1084
...

[arno_b (arno.b)]

I do not think that there is a relation with bug 268683 because the backtrace are too different even if they are both related to the thumbnail plugin.

[arno_b (arno.b)]

I cannot reproduce the crash on a computer having an NVIDIA card with the same settings.

[Travis Watkins (amaranth)]

Fixed in commit http://git.compiz.org/compiz/plugins/thumbnail/commit/?id=284606b4ea1505af15b1cec264e5202818cd36a7 which is included in karmic.