gistfile1.txt

(gdb) set follow-fork-mode child
(gdb) run
Starting program: /home/asf/dl/src/tmux-1.2/tmux 
[Thread debugging using libthread_db enabled]
[Thread debugging using libthread_db enabled]
[New Thread 0x7fb9939686e0 (LWP 31724)]
[Thread debugging using libthread_db enabled]
[New Thread 0x7fb9939686e0 (LWP 31725)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fb9939686e0 (LWP 31725)]
0x00007fb992bf2a0e in ?? () from /lib/libc.so.6
(gdb) back
#0  0x00007fb992bf2a0e in ?? () from /lib/libc.so.6
#1  0x00007fb992bf52a6 in ?? () from /lib/libc.so.6
#2  0x00007fb992bf6a58 in malloc () from /lib/libc.so.6
#3  0x0000000000441932 in imsg_get ()
#4  0x00000000004280c5 in server_client_msg_dispatch ()
#5  0x0000000000427420 in server_client_callback ()
#6  0x00007fb992ed8ec1 in event_base_loop () from /usr/lib/libevent-1.3e.so.1
#7  0x000000000042a666 in server_loop ()
#8  0x000000000042a64c in server_start ()
#9  0x0000000000403b5e in client_init ()
#10 0x0000000000431b14 in main ()