Reading symbols from /home/willykaze/DLight.3.0.6-b4/bin/dlight...(no debugging symbols found)...done. (gdb) run Starting program: /home/willykaze/DLight.3.0.6-b4/bin/dlight [Thread debugging using libthread_db enabled] [New Thread 0xb73b2b70 (LWP 31937)] [New Thread 0xb69dbb70 (LWP 31938)] [New Thread 0xb61dab70 (LWP 31939)] [New Thread 0xb59d9b70 (LWP 31940)] [New Thread 0xb51d8b70 (LWP 31941)] [New Thread 0xb49d7b70 (LWP 31942)] [New Thread 0xb41d6b70 (LWP 31943)] [New Thread 0xb37c1b70 (LWP 31944)] Program received signal SIGSEGV, Segmentation fault. 0xb7946356 in strncmp () from /lib/libc.so.6 (gdb) next Single stepping until exit from function strncmp, which has no line number information. [Thread 0xb73b2b70 (LWP 31937) exited] [Thread 0xb49d7b70 (LWP 31942) exited] [Thread 0xb51d8b70 (LWP 31941) exited] [Thread 0xb59d9b70 (LWP 31940) exited] [Thread 0xb41d6b70 (LWP 31943) exited] [Thread 0xb61dab70 (LWP 31939) exited] [Thread 0xb69dbb70 (LWP 31938) exited] [Thread 0xb37c1b70 (LWP 31944) exited] Program terminated with signal SIGSEGV, Segmentation fault. The program no longer exists. (gdb) quit