GNU gdb (Gentoo 7.6.2 p1) 7.6.2
Copyright (C) 2013 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 "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/glxgears...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/glxgears 
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff2870700 (LWP 3640)]
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0.0"
      after 36 requests (36 known processed) with 0 events remaining.
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
[Thread 0x7ffff2870700 (LWP 3640) exited]
[Inferior 1 (process 3636) exited with code 01]
(gdb)