#0  0xb6e0223b in strlen () from /lib/tls/i686/cmov/libc.so.6
#1  0xb6dce826 in vfprintf () from /lib/tls/i686/cmov/libc.so.6
#2  0xb6e82f97 in __fprintf_chk () from /lib/tls/i686/cmov/libc.so.6
#3  0x0804f226 in _start ()