> bt
#0  0x0faeb8bc in raise () from /lib/libc.so.6
#1  0x0faf0f74 in abort () from /lib/libc.so.6
#2  0x1006ccf8 in OsAbort () at ../../os/utils.c:1241
#3  0x1007a60c in ddxGiveUp () at ../../../../hw/xfree86/common/xf86Init.c:915
#4  0x1007a6ec in AbortDDX () at ../../../../hw/xfree86/common/xf86Init.c:961
#5  0x10076f14 in AbortServer () at ../../os/log.c:410
#6  0x1007714c in FatalError (f=0x101b6268 "Caught signal %d (%s). Server aborting\n") at ../../os/log.c:536
#7  0x10079a6c in OsSigHandler (signo=11, sip=0xbfe7e1f0, unused=<value optimized out>) at ../../os/osinit.c:153
#8  <signal handler called>
#9  ChangeGC (client=0x0, pGC=0x1050fc90, mask=12288, pUnion=0xbfe7e864) at ../../dix/gc.c:250
#10 0x10069df4 in miPaintWindow (pWin=<value optimized out>, prgn=0xbfe7e938, what=<value optimized out>) at ../../mi/miexpose.c:657
#11 0x1006a180 in miWindowExposures (pWin=0x10510238, prgn=0xbfe7e938, other_exposed=0x0) at ../../mi/miexpose.c:501
#12 0x1014ab90 in xf86XVWindowExposures (pWin=0x10510238, reg1=0xbfe7e938, reg2=<value optimized out>) at ../../../../hw/xfree86/common/xf86xv.c:1188
#13 0x1017a9c0 in miClearToBackground (pWin=0x10510238, x=<value optimized out>, y=<value optimized out>, w=<value optimized out>, h=<value optimized out>, 
    generateExposures=1) at ../../mi/miwindow.c:116
#14 0x100bc568 in compFreeClientSubwindows (pWin=0x10510238, id=<value optimized out>) at ../../composite/compalloc.c:422
#15 0x100b7304 in FreeCompositeClientSubwindows (value=<value optimized out>, ccwid=<value optimized out>) at ../../composite/compext.c:94
#16 0x10030f08 in FreeResource (id=1086324950, skipDeleteFuncType=0) at ../../dix/resource.c:596
#17 0x100bc644 in compUnredirectSubwindows (pClient=<value optimized out>, pWin=<value optimized out>, update=<value optimized out>)
    at ../../composite/compalloc.c:461
#18 0x100b7020 in ProcCompositeUnredirectSubwindows (client=0x106c1380) at ../../composite/compext.c:198
#19 0x100b60c8 in ProcCompositeDispatch (client=<value optimized out>) at ../../composite/compext.c:372
#20 0x1004cf50 in Dispatch () at ../../dix/dispatch.c:431
#21 0x1001cf78 in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at ../../dix/main.c:287

> bt full
#0  0x0faeb8bc in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x0faf0f74 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x1006ccf8 in OsAbort () at ../../os/utils.c:1241
No locals.
#3  0x1007a60c in ddxGiveUp () at ../../../../hw/xfree86/common/xf86Init.c:915
        i = <value optimized out>
#4  0x1007a6ec in AbortDDX () at ../../../../hw/xfree86/common/xf86Init.c:961
        i = <value optimized out>
#5  0x10076f14 in AbortServer () at ../../os/log.c:410
No locals.
#6  0x1007714c in FatalError (f=0x101b6268 "Caught signal %d (%s). Server aborting\n") at ../../os/log.c:536
        args = {{gpr = 3 '\003', fpr = 0 '\000', reserved = 0, overflow_arg_area = 0xbfe7e188, reg_save_area = 0xbfe7e108}}
        beenhere = 1
#7  0x10079a6c in OsSigHandler (signo=11, sip=0xbfe7e1f0, unused=<value optimized out>) at ../../os/osinit.c:153
No locals.
#8  <signal handler called>
No symbol table info available.
#9  ChangeGC (client=0x0, pGC=0x1050fc90, mask=12288, pUnion=0xbfe7e864) at ../../dix/gc.c:250
        index2 = <value optimized out>
        error = <value optimized out>
        pPixmap = 0x0
        maskQ = 13569
        __PRETTY_FUNCTION__ = "ChangeGC"
#10 0x10069df4 in miPaintWindow (pWin=<value optimized out>, prgn=0xbfe7e938, what=<value optimized out>) at ../../mi/miexpose.c:657
        pScreen = <value optimized out>
        gcval = {{val = 3, ptr = 0x3}, {val = 1, ptr = 0x1}, {val = 0, ptr = 0x0}, {val = 0, ptr = 0x0}, {val = 0, ptr = 0x0}, {val = 842094169, ptr = 0x32315659}}
        gcmask = 13569
        pGC = 0x1050fc90
        i = <value optimized out>
        pbox = <value optimized out>
        prect = 0x107030f0
        numRects = <value optimized out>
        draw_x_off = 0
        draw_y_off = 0
        tile_x_off = <value optimized out>
        tile_y_off = <value optimized out>
        solid = <value optimized out>
        drawable = <value optimized out>
#11 0x1006a180 in miWindowExposures (pWin=0x10510238, prgn=0xbfe7e938, other_exposed=0x0) at ../../mi/miexpose.c:501
        expRec = {extents = {x1 = 0, y1 = 0, x2 = 4208, y2 = 12356}, data = 0x104d3d00}
        clientInterested = 32768
        exposures = 0xbfe7e938
#12 0x1014ab90 in xf86XVWindowExposures (pWin=0x10510238, reg1=0xbfe7e938, reg2=<value optimized out>) at ../../../../hw/xfree86/common/xf86xv.c:1188
        pScreen = 0x104d3098
        ScreenPriv = <value optimized out>
        WinPriv = 0x0
        pPriv = <value optimized out>
        AreasExposed = 0
#13 0x1017a9c0 in miClearToBackground (pWin=0x10510238, x=<value optimized out>, y=<value optimized out>, w=<value optimized out>, h=<value optimized out>, 
    generateExposures=1) at ../../mi/miwindow.c:116
        reg = {extents = {x1 = 0, y1 = 0, x2 = 1024, y2 = 768}, data = 0x0}
        extents = 0x10510268
        x1 = <value optimized out>
        y1 = <value optimized out>
        x2 = <value optimized out>
        y2 = <value optimized out>
#14 0x100bc568 in compFreeClientSubwindows (pWin=0x10510238, id=<value optimized out>) at ../../composite/compalloc.c:422
        pClient = 0x106c1380
        csw = 0x106fe860
        ccw = <value optimized out>
        prev = <value optimized out>
        pChild = <value optimized out>
#15 0x100b7304 in FreeCompositeClientSubwindows (value=<value optimized out>, ccwid=<value optimized out>) at ../../composite/compext.c:94
No locals.
#16 0x10030f08 in FreeResource (id=1086324950, skipDeleteFuncType=0) at ../../dix/resource.c:596
        rtype = <value optimized out>
        cid = <value optimized out>
        res = 0x10702d48
        prev = 0x1085f1a8
        head = 0x109dc6a0
        elements = 567
#17 0x100bc644 in compUnredirectSubwindows (pClient=<value optimized out>, pWin=<value optimized out>, update=<value optimized out>)
    at ../../composite/compalloc.c:461
        csw = <value optimized out>
        ccw = <value optimized out>
#18 0x100b7020 in ProcCompositeUnredirectSubwindows (client=0x106c1380) at ../../composite/compext.c:198
        pWin = 0x10510238
        stuff = 0x10968368
#19 0x100b60c8 in ProcCompositeDispatch (client=<value optimized out>) at ../../composite/compext.c:372
        stuff = <value optimized out>
#20 0x1004cf50 in Dispatch () at ../../dix/dispatch.c:431
        clientReady = 0x106a17a0
        result = <value optimized out>
        client = <value optimized out>
        nready = 0
        icheck = 0x101f39c4
        start_tick = 1815900
#21 0x1001cf78 in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at ../../dix/main.c:287
        i = <value optimized out>
        alwaysCheckForInput = {0, 1}

> frame 9
#9  ChangeGC (client=0x0, pGC=0x1050fc90, mask=12288, pUnion=0xbfe7e864) at ../../dix/gc.c:250

> l
250			if ((pPixmap->drawable.depth != pGC->depth) ||
245			}
246			break;
247		    }
248		    case GCTile:
249			NEXT_PTR(PixmapPtr, pPixmap);
250			if ((pPixmap->drawable.depth != pGC->depth) ||
251			    (pPixmap->drawable.pScreen != pGC->pScreen))
252			{
253			    error = BadMatch;
254			}