% unlimit ← core を残すように設定 % prog hoge ← prog を実行したら落ちた! segmentation fault (core dumped) % gdb prog core ← gdb を立ち上げる ... (gdb) where ← どうだ! #0 0x08053dd8 in ORSimple::OROne (this=0x8064470, r=0) at main.cpp:343 #1 0x08053f5f in OR::Loop (this=0x8064470) at main.cpp:325 #2 0x0804a2c8 in main (argc=7, argv=0x7ffff614) at main.cpp:782 #3 0x2ab3da1e in __libc_start_main (main=0x8049a6c <main>, argc=7,