--Architecture(ia32,ia32e): ia32e 
--2D driver: Xf86_video_intel master(213394fbaaf353404cbb3aaa4c20860f48ee1079)
--3D driver: Mesa master(32d196820f5669a03bfd1adde1352b857ffda3b6)
--Xserver: server-1.3-branch(f521308ad2c06afa00143d3ab407e18d5293d497)
--OS: FC5

Description:
=======================
on ia32e platform, the case XDrawArcs-1 in Xtest suite will crash X and failed the following case testing, while on ia32 platform, it doesn't occur.
following are the error info:

70||"VSW5TESTSUITE CASE XDrawArcs 112"
10|5 /tset/Xlib9/drwarcs/Test 15:52:14|TC Start, scenario ref 13-0
15|5 3.3-lite 112|TCM Start
400|5 1 1 15:52:15|IC Start
200|5 1 15:52:15|TP Start
520|5 1 00003350 1 1|VSW5TESTSUITE PURPOSE 1
520|5 1 00003350 1 2|Assertion XDrawArcs-1.(A)
520|5 1 00003350 1 3|A call to XDrawArcs draws narcs circular or elliptical arcs
520|5 1 00003350 1 4|in the drawable d, each specified by the corresponding
520|5 1 00003350 1 5|member of the arcs list.
520|5 1 00003350 1 6|METH: Draw arcs.
520|5 1 00003350 1 7|METH: Pixmap verify.
520|5 1 00003350 1 8|REPORT: A fatal I/O error occurred
520|5 1 00003350 1 9|REPORT: Any following results can not be relied upon
220|5 1 7 15:52:16|NORESULT (auto-generated by TCC)
80|5 2 15:52:16|TC End, scenario ref 13-0

with "vesa" driver , outcome is all the same.