(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x08126192 in IgnoreClient (client=0x83e1bd0) at connection.c:1198
1198        int connection = oc->fd;
(gdb) bt
#0  0x08126192 in IgnoreClient (client=0x83e1bd0) at connection.c:1198
#1  0xb7d27cbd in glxSuspendClients () at glxext.c:383
#2  0xb7d5d95c in glxDRILeaveVT (index=0, flags=0) at glxdri.c:809
#3  0x080a6e38 in AbortDDX () at xf86Init.c:1323
#4  0x081305d8 in AbortServer () at log.c:406
#5  0x08130b46 in FatalError (
    f=0x81b0604 "Caught signal %d.  Server aborting\n") at log.c:552
#6  0x080c9d69 in xf86SigHandler (signo=11) at xf86Events.c:766
#7  <signal handler called>
#8  0x00000000 in ?? ()
#9  0xa795ee0f in delete_framebuffer_cb (id=1, data=0xa7b1e200,
    userData=0x84b72d8) at main/context.c:655
#10 0xa7980d04 in _mesa_HashDeleteAll (table=0x8415bf8,
    callback=0xa795edf6 <delete_framebuffer_cb>, userData=0x84b72d8)
    at main/hash.c:275
#11 0xa795f3f6 in free_shared_state (ctx=0x84b72d8, ss=0x831b618)
    at main/context.c:723
#12 0xa7960213 in _mesa_free_context_data (ctx=0x84b72d8)
    at main/context.c:1260
#13 0xa793d0f1 in intelDestroyContext (driContextPriv=0x83a0250)
    at intel_context.c:520
#14 0xa791a050 in driDestroyContext (context=0x831b5a4)
    at ../common/dri_util.c:559
#15 0xb7d5e4c3 in __glXDRIcontextDestroy (baseContext=0x831b548)
    at glxdri.c:253
#16 0xb7d28104 in __glXFreeContext (cx=0x831b548) at glxext.c:139
#17 0xb7d28237 in ContextGone (cx=0xa7b1e200, id=48234502) at glxext.c:97
#18 0x080738c2 in FreeClientResources (client=0x83e1bd0) at resource.c:835
#19 0x08084a48 in CloseDownClient (client=0x83e1bd0) at dispatch.c:3629
#20 0x0808ac60 in Dispatch () at dispatch.c:513
#21 0x08072155 in main (argc=9, argv=0xbfcfa144, envp=Cannot access memory at address 0x7b5
) at main.c:454
(gdb) print *client
$7 = {index = 23, clientAsMask = 48234496, requestBuffer = 0x8a22b68,
  osPrivate = 0x0, swapped = 0, pSwapReplyFunc = 0x80a0c60 <CopySwap32Write>,
  errorValue = 124, sequence = 71970, closeDownMode = 0, clientGone = 1,
  noClientException = 0, lastDrawable = 0x8245270, lastDrawableID = 124,
  lastGC = 0x0, lastGCID = 0, saveSet = 0x0, numSaved = 0, screenPrivate = {
    0x1, 0x83e1c50, 0x40, 0xb5409e80, 0x40, 0x400, 0x0, 0x8383fb8, 0x0, 0x0,
    0x81ea11c, 0x0, 0x0, 0x81ea11c, 0x0, 0x8382bf8},
  requestVector = 0x81ec400, req_len = 2, big_requests = 1, priority = 0,
  clientState = ClientStateGone, devPrivates = 0x83e1c94,
  xkbClientFlags = 32768, mapNotifyMask = 7, newKeyboardNotifyMask = 949,
  vMajor = 1, vMinor = 0, minKC = 8 '\b', maxKC = 255 'ÿ',
  replyBytesRemaining = 0, appgroup = 0x0, fontResFunc = 0,
  smart_priority = 20, smart_start_tick = 740, smart_stop_tick = 740,
  smart_check_tick = 740}
(gdb) print (OsCommPtr)client->osPrivate
$8 = (struct _osComm *) 0x0