Mac OS X(Darwin)で>>312やったら、

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00000000
0x00001ff5 in main () at bus.c:2
2 *(int*)0 = 0;

だとよ。EXC_BAD_ACCESSしらねー。