(gdb) t a all bt
Backtrace limit of 20 exceeded

Thread 4 (Thread 32771):
#-1 0x402a319c in nanosleep ()
   from /opt/crosstool/gcc-3.4.4-glibc-2.3.5-linux-2.6.12/arm-softfloat-linux-gnu/arm-softfloat-linux-gnu/lib/libc.so.6
Backtrace limit of 20 exceeded
Backtrace limit of 20 exceeded
13              sleep(3);
(gdb)