Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x4637c390 (LWP 8020)] 0x43502948 in ?? () (gdb) bt full #0 0x43502948 in ?? () No symbol table info available. #1 0x4350f988 in ?? () No symbol table info available. #2 0x4350f988 in ?? () No symbol table info available. Backtrace stopped: previous frame identical to this frame (corrupt stack?)