Re: X-window crashes: endianness?

[Fred Kiefer]

The endianness patch did not affect the xlib backend that you are using.
So if there is a changed behaviour it must have a different cause.
What is strange in your back trace is that both width and height of the
destination rectangle are 0 in this case we should never get to the line
where this claims to be crashing.
But then the x and y coordinates of source and destination are negative.
I have no idea how this could happen.

Fred

Am 06.02.2010 00:53, schrieb Riccardo Mottola:
> when running a gui program on my SparcStation running OpenBSD and
> exporting the display to an x86 FreeBSD box, I get a crash.
> 
> I'm running SVN trunk  on the Sparc box. The same configuration 1-2
> months ago used to work.
> I read that recently there were fixes for endiannes (here we have big to
> little endian) but that usually just gave weird colors. Maybe the shared
> memory detection?
> 
> The stacktrace:
> 
> 2010-02-06 00:28:46.356 Graphos[830] X-Windows error - BadGC (invalid GC
> parameter)
>           on display: faramir:0.0
>                     type: 0
>        serial number: 229
>         request code: 70
> 2010-02-06 00:28:46.363 Graphos[830] X-Windows error - BadDrawable
> (invalid Pixmap or Window parameter)
>           on display: faramir:0.0
>                     type: 0
>        serial number: 230
>         request code: 73
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x11f1c778 in _bitmap_combine_alpha (context=0xe1dcb00,
>     data_planes=0xf7fbe3c0, width=64, height=64, bits_per_sample=8,
>     samples_per_pixel=4, bits_per_pixel=32, bytes_per_row=256,
> colour_space=1,
>     one_is_black=0 '\000', is_planar=0 '\000', has_alpha=1 '\001',
>     fast_min=1 '\001', dest_im=0xb26e240, dest_alpha=0xbadb6a0, srect=
>       {x = -2053, y = -7800, width = 63483, height = 57744}, drect=
>       {x = -2053, y = -7792, width = 0, height = 0}, op=NSCompositeClear,
>     drawMechanism=XGDM_FAST32) at XGBitmap.m:972
> 972                         XPutPixel(dest_im->image, col, row, pixel);
> 
> 
> ----
> 
> #0  0x11f1c778 in _bitmap_combine_alpha (context=0xe1dcb00,
>     data_planes=0xf7fbe3c0, width=64, height=64, bits_per_sample=8,
>     samples_per_pixel=4, bits_per_pixel=32, bytes_per_row=256,
> colour_space=1,
>     one_is_black=0 '\000', is_planar=0 '\000', has_alpha=1 '\001',
>     fast_min=1 '\001', dest_im=0xb26e240, dest_alpha=0xbadb6a0, srect=
>       {x = -2053, y = -7800, width = 63483, height = 57744}, drect=
>       {x = -2053, y = -7792, width = 0, height = 0}, op=NSCompositeClear,
>     drawMechanism=XGDM_FAST32) at XGBitmap.m:972
> #1  0x11f2a26c in -[XGGState(Ops) DPSimage:::::::::::] (self=0xb268a08,
>     _cmd=0xf7fbe190, matrix=0xf7fbe188, pixelsWide=64, pixelsHigh=64,
>     bitsPerSample=2, samplesPerPixel=4, bitsPerPixel=32, bytesPerRow=256,
>     isPlanar=0, hasAlpha=1, colorSpaceName=0xf963a54, data=0xf7fbe3c0)
>     at XGGState.m:1764
> #2  0x11ed9b64 in -[GSContext(NSGraphics) NSDrawBitmap:::::::::::] (
>     self=0x92fa888, _cmd=0x20, rect=
>         {origin = {x = 0, y = 0}, size = {width = 64, height = 64}},
>     pixelsWide=64, pixelsHigh=64, bitsPerSample=8, samplesPerPixel=4,
>     bitsPerPixel=32, bytesPerRow=256, isPlanar=0, hasAlpha=1,
>     colorSpaceName=0xf963a54, data=0xf7fbe3c0) at GSContext.m:884
> #3  0x11ed9970 in -[GSContext(Ops) GSDrawImage::] (self=0x92fa888,
>     _cmd=0xf7fbe3c0, rect=Cannot access memory at address 0x8
> ) at GSContext.m:831
> #4  0x0f456c18 in -[NSBitmapImageRep draw] (self=0x92fa308, _cmd=0xf924acc)
>     at NSBitmapImageRep.m:1398
> #5  0x0f4dca20 in -[NSImageRep drawInRect:] (self=0x92fa308,
> _cmd=0xf923260,
> ---Type <return> to continue, or q <return> to quit---
>     aRect={origin = {x = 0, y = 0}, size = {width = 64, height = 64}})
>     at NSImageRep.m:488
> #6  0x0f4d54e0 in -[NSImage drawRepresentation:inRect:] (
>     self=<incomplete type>, _cmd=0xf923978, imageRep=0x92fa308, aRect=
>         {origin = {x = 0, y = 0}, size = {width = 64, height = 64}})
>     at NSImage.m:919
> #7  0x0f4d8ab8 in -[NSImage(Private) _doImageCache:] (self=<incomplete
> type>,
>     _cmd=0xf9231b0, rep=0x8c65a08) at NSImage.m:1828
> #8  0x0f4d4a4c in -[NSImage
> compositeToPoint:fromRect:operation:fraction:] (
>     self=<incomplete type>, _cmd=0xf923188, aPoint=
>       {x = 1.44126486e-29, y = 0}, srcRect=
>         {origin = {x = 1.44126486e-29, y = 0}, size = {width =
> -1.0218784e+34,
> height = 1.16307773e-42}}, op=NSCompositeSourceOver, delta=1) at
> NSImage.m:827
> #9  0x0f4d488c in -[NSImage compositeToPoint:fromRect:operation:] (
>     self=<incomplete type>, _cmd=0xf923180, aPoint={x = 0, y = 0}, aRect=
>         {origin = {x = 0, y = 0}, size = {width = 64, height = 64}},
>     op=NSCompositeSourceOver) at NSImage.m:794
> #10 0x0f4d4800 in -[NSImage compositeToPoint:operation:] (
>     self=<incomplete type>, _cmd=0xf90a448, aPoint={x = 0, y = 0},
>     op=NSCompositeSourceOver) at NSImage.m:787
> #11 0x0f47a414 in -[NSCell drawInteriorWithFrame:inView:] (self=0xbad7748,
>     _cmd=0xf90a458, cellFrame=
>         {origin = {x = 1.4803317e-41, y = 0}, size = {width =
> 1.48089222e-41, height = 0}}, controlView=0xf28ae08) at NSCell.m:1984
> 
> Any clues?
> 
> Riccardo
> 
> 
> 
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