I recently discovered a serious problem with an openGL 3-d program I’m writing called Tronimation. For some reason, it’s as if something I have no idea about is just randomly corrupting the internal state of GLUT and then causing it to crash when unrelated actions are taken. Here is a gdb session. All I did was move my program camera back in Z a bit, and then tried to change the window size. The program siezed, and gave me the same warning: Something to do with glXwaitX, the variable “scope,” and do-lookup.h. Note that this crash does NOT happen if I don’t try to move the camera. I’ve been going through all my source making sure everything is casted to exactly what all the GL/GLU/GLUT functions expect, with no impact on the problem at all (???). What on earth is going on?
[erik-k@erik Tronimation]$ gdb ./tronimation
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This GDB was configured as “i586-mandrake-linux-gnu”…Using host libthread_db library “/lib/tls/libthread_db.so.1”.
(gdb) run
Starting program: /home/erik-k/programs/opengl/worldview/Tronimation/tronimation
4823: binding file /usr/X11R6/lib/libglut.so.3 to /usr/lib/tls/libGL.so.1: normal symbol `glXWaitX’
Program received signal SIGSEGV, Segmentation fault.
do_lookup (undef_name=0x4012cd5c “glXWaitX”, hash=31295096, ref=0x4012bc54, result=0xbffff384, scope=Variable “scope” is not available.
) at do-lookup.h:52
52 do-lookup.h: No such file or directory.
in do-lookup.h
(gdb) step
Program terminated with signal SIGSEGV, Segmentation fault.
The program no longer exists.
(gdb)