I had a similar problem (SIGFPE in ATIDivide); I didn't track down the
cause, but with this workaround, X.org stopped crashing. I also filed a
bug report with Xorg: https://bugs.freedesktop.org/show_bug.cgi?id=11054
--- programs/Xserver/hw/xfree86/drivers/ati/atimach64xv.c.orig 2005-07-11
02:29:44.000000000 +0000
+++ programs/Xserver/hw/xfree86/drivers/ati/atimach64xv.c
@@ -959,6 +959,9 @@ ATIMach64PutImage
if (pATI->ActiveSurface)
return Success;
+ if (DstW == 0 || DstH == 0)
+ return BadValue;
+
if (!ATIMach64ClipVideo(pScreenInfo, pATI, ImageID,
SrcX, SrcY, SrcW, SrcH,
DstX, DstY, &DstW, &DstH,
--
Sergey Svishchev
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