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https://bugs.freedesktop.org/show_bug.cgi?id=6240
------- Additional Comments From [EMAIL PROTECTED] 2006-10-02 04:42 -------
glthreads.c backtrace:
(gdb) r
Starting program: /home/snob/tmp/a.out
[Thread debugging using libthread_db enabled]
[New Thread -1213474320 (LWP 14779)]
threadgl: test of GL thread safety (any key = exit)
Usage:
threadgl [-display dpyName] [-n numthreads]
XInitThreads() returned 1 (success)
[New Thread -1283605600 (LWP 14782)]
Created Thread -1283605600
[New Thread -1291998304 (LWP 14783)]
Created Thread -1291998304
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1283605600 (LWP 14782)]
0xb7908fbe in intelInitDriverFunctions ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
(gdb) bt
#0 0xb7908fbe in intelInitDriverFunctions ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
#1 0xb7929796 in _mesa_make_current ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
#2 0xb7908984 in intelMakeCurrent ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
#3 0xb78f16ae in __driUtilUpdateDrawableInfo ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
#4 0xb7eb7a6c in glXDestroyContext () from /usr/lib/libGL.so.1
#5 0xb7eb9912 in glXMakeCurrentReadSGI () from /usr/lib/libGL.so.1
#6 0xb7eb9ba3 in glXMakeCurrent () from /usr/lib/libGL.so.1
#7 0x08049276 in draw_loop (wt=0x804b040) at glthreads.c:150
#8 0x08049831 in thread_function (p=0x804b040) at glthreads.c:303
#9 0xb7bf234b in start_thread () from /lib/libpthread.so.0
#10 0xb7cbf65e in clone () from /lib/libc.so.6
(gdb)
P.S. I've modified attached ctx.c example to use XInitThreads, XLockDisplay,
etc. Nothing changes. Here is gdb backtrace:
(gdb) r
Starting program: /home/snob/tmp/ctx2
[Thread debugging using libthread_db enabled]
[New Thread -1213593104 (LWP 14891)]
String :1.3 Mesa 6.4.2
[New Thread -1280169056 (LWP 14894)]
Thread!
Calling glGetString now
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1280169056 (LWP 14894)]
0xb79291f8 in _mesa_GetString () from /usr/X11R6/lib/modules/dri/i915_dri.so
(gdb) bt
#0 0xb79291f8 in _mesa_GetString ()
from /usr/X11R6/lib/modules/dri/i915_dri.so
#1 0x080489f2 in thread (arg=0x0) at ctx2.c:36
#2 0xb7bd534b in start_thread () from /lib/libpthread.so.0
#3 0xb7ca265e in clone () from /lib/libc.so.6
(gdb)
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