错误类型列举 错误类型A:EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0) 错误类型B:EXC_BREAKPOINT (code=EXC_ARM_BREAKPOINT, subcode=0xe7ffdefe) 错误类型C:signal SIGABRT(this class is not key value coding-compliant for the key XXXX) 发生情形 错误使用01 误以为变量溢出后会截断(然而并没有,只…