多次调用暂停dispatch_suspend 再调用取消dispatch_cancel 不崩溃
多次调用继续dispatch_resume再调用取消dispatch_cancel则崩溃
报
Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
报
Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
本文标题:GCD定时器⏲使用注意
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