GNU gdb (GDB) 7.2-debian
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
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For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/X...(no debugging symbols found)...done.
(gdb) set args :0
(gdb) run
Starting program: /usr/bin/X :0
process 14244 is executing new program: /usr/bin/Xorg
[Thread debugging using libthread_db enabled]

Program received signal SIGSEGV, Segmentation fault.
__memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:153
	in ../sysdeps/x86_64/multiarch/memcpy-ssse3.S
(gdb) bt full
#0  __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:153
No locals.
#1  0x00007faa64837db1 in shadowUpdatePacked (pScreen=0x2502620, pBuf=0x2503b40) at ../../../miext/shadow/shpacked.c:105
        damage = 0x2503bb0
        pShadow = <value optimized out>
        nbox = 0
        pbox = <value optimized out>
        shaBase = 0x7faa5ca3b010
        sha = <value optimized out>
        shaStride = 3200
        scrBase = 1920
        scrLine = 0
        scr = 3200
        shaBpp = 32
        shaXoff = <value optimized out>
        shaYoff = <value optimized out>
        x = <value optimized out>
        y = <value optimized out>
        w = 3200
        h = <value optimized out>
        width = 0
        i = 1280
        winBase = 0x7faa64836000
        win = <value optimized out>
        winSize = 1920
#2  0x00007faa6483743f in shadowRedisplay (pScreen=0x2502620) at ../../../miext/shadow/shadow.c:61
        pBuf = 0x2503b40
        pRegion = <value optimized out>
#3  0x000000000043571d in BlockHandler (pTimeout=0x7fff82b25f58, pReadmask=0x7eda40) at ../../dix/dixutils.c:389
        i = <value optimized out>
        j = <value optimized out>
#4  0x000000000045dcda in WaitForSomething (pClientsReady=0x28b86a0) at ../../os/WaitFor.c:219
        i = <value optimized out>
        waittime = {tv_sec = 600, tv_usec = 0}
        wt = 0x7fff82b25f40
        timeout = <value optimized out>
        clientsReadable = {fds_bits = {0 <repeats 16 times>}}
        clientsWritable = {fds_bits = {1712, 450971566080, 1, 42696624, 42791104, 42698352, 140369853046400, 1760, 14272, 140369849872147, 192, 140369853046400, 42696640, 1740, 
            42696624, 1760}}
        selecterr = <value optimized out>
        nready = 0
        devicesReadable = {fds_bits = {140733193388033, 42791312, 140369853046400, 42791472, 140369853046400, 1680, 304, 140369849859444, 0, 140369882633504, 1680, 
            140369853046488, 140369853046504, 1, 1665, 317831862540}}
        now = <value optimized out>
        someReady = <value optimized out>
#5  0x00000000004314b2 in Dispatch () at ../../dix/dispatch.c:367
        clientReady = 0x28b86a0
        result = <value optimized out>
        client = <value optimized out>
        nready = <value optimized out>
        icheck = 0x7eca70
        start_tick = <value optimized out>
#6  0x00000000004257de in main (argc=2, argv=<value optimized out>, envp=<value optimized out>) at ../../dix/main.c:287
        i = <value optimized out>
        alwaysCheckForInput = {0, 1}
(gdb) quit
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	Inferior 1 [process 14244] will be killed.

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