root@localhost:~# gdb ./test_egl core
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabi".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /root/test_egl...done.
[New LWP 436]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabi/libthread_db.so.1".
Core was generated by `./test_egl'.
Program terminated with signal 11, Segmentation fault.
#0  0xfffffffc in ?? ()
(gdb) bt
#0  0xfffffffc in ?? ()
#1  0x402c5e5e in ?? ()
#2  0x402c5e5e in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)