ios真机闪退 (stop reason = EXC_BAD_ACCESS)

[junlas]

thread #35, name = 'WTF::AutomaticThread', stop reason = EXC_BAD_ACCESS (code=1, address=0x0) frame #0: 0x000000019699b974 JavaScriptCoreJSC::SlotVisitor::drain(WTF::MonotonicTime) + 768 frame #1: 0x000000019699bef0 JavaScriptCoreJSC::SlotVisitor::drainInParallel(WTF::MonotonicTime) + 64 frame #2: 0x00000001966d9708 JavaScriptCoreJSC::Heap::markToFixpoint(double) + 1164 frame #3: 0x00000001966dbf54 JavaScriptCoreJSC::Heap::collectInThread() + 448 frame #4: 0x00000001966de974 JavaScriptCoreJSC::Heap::Thread::work() + 16 frame #5: 0x0000000196a548a4 JavaScriptCorestd::1::function::func const&)::$_0, std::1::allocator const&)::$_0>, void ()>::operator()() + 352 frame #6: 0x00000001960cde88 JavaScriptCoreWTF::threadEntryPoint(void*) + 212 frame #7: 0x00000001960cdd98 JavaScriptCoreWTF::wtfThreadEntryPoint(void*) + 24 frame #8: 0x00000001912b168c libsystem_pthread.dylib_pthread_body + 240 frame #9: 0x00000001912b159c libsystem_pthread.dylibpthreadstart + 284 frame #10: 0x00000001912aecb4 libsystem_pthread.dylib`thread_start + 4 (lldb)