(lldb) bt
* thread #1: tid = 0xfa315, 0x000000010edb6c6b libc++abi.dylib`__cxa_throw, queue = 'com.apple.coremedia.surrogatePlaybackItem[0x7f9cb29d0fb0]', stop reason = breakpoint 1.2
frame #0: 0x000000010edb6c6b libc++abi.dylib`__cxa_throw
frame #1: 0x0000000127582cab AudioCodecs`ACBaseCodec::GetPropertyInfo(unsigned int, unsigned int&, unsigned char&) + 461
frame #2: 0x0000000127618c6e AudioCodecs`GetPropertyInfo(void*, unsigned int, unsigned int*, unsigned char*) + 38
frame #3: 0x0000000111af9b4f AudioToolbox`GetFormatListFromCodec(OpaqueAudioComponentInstance*, AudioFormatInfo const*, unsigned int*, AudioFormatListItem*) + 63
frame #4: 0x0000000111af9ce5 AudioToolbox`FetchFormatListFromCodecs(int (*)(OpaqueAudioComponentInstance*, AudioFormatInfo const*, unsigned int*, AudioFormatListItem*), AudioFormatInfo const*, unsigned int, unsigned int*, AudioFormatListItem*) + 309
frame #5: 0x00000001119ba7c0 AudioToolbox`AudioFormatGetPropertyInfo + 1632
frame #6: 0x000000010981df98 CoreMedia`FigAudioFormatDescriptionCreateFormatListDispatchOnceCallback + 130
frame #7: 0x000000010e9fd3eb libdispatch.dylib`_dispatch_client_callout + 8
frame #8: 0x000000010e9e8d68 libdispatch.dylib`dispatch_once_f + 543
frame #9: 0x000000010981df14 CoreMedia`CMAudioFormatDescriptionGetFormatList + 168
frame #10: 0x000000010981e054 CoreMedia`CMAudioFormatDescriptionGetRichestDecodableFormat + 22
frame #11: 0x00000001162bb2f0 MediaToolbox`FPSupport_GetDefaultTrackIDForMediaType + 333
frame #12: 0x0000000116257947 MediaToolbox`itemfig_setBasicInspectables + 1240
frame #13: 0x0000000116275c32 MediaToolbox`itemfig_retrieveAssetBasicsIfReady + 256
frame #14: 0x000000011626e06c MediaToolbox`playerfig_CreatePlaybackItemFromAsset + 693
frame #15: 0x0000000116413e77 MediaToolbox`surrogatePlaybackItem_createRealItemInternal + 114
frame #16: 0x000000010e9fd3eb libdispatch.dylib`_dispatch_client_callout + 8
frame #17: 0x000000010e9e1ef5 libdispatch.dylib`_dispatch_barrier_sync_f_invoke + 393
frame #18: 0x0000000116413969 MediaToolbox`surrogatePlaybackItem_createRealItem + 70
frame #19: 0x00000001164168cd MediaToolbox`surrogatePlayer_createRealItemAndRealPlayer + 130
frame #20: 0x00000001164165a2 MediaToolbox`surrogatePlaybackItem_CopyProperty + 431
frame #21: 0x0000000116252f46 MediaToolbox`itemasync_CopyProperty + 397
frame #22: 0x000000010d2d053b AVFoundation`+[AVPlayerItem _copyTimebaseFromFigPlaybackItem:] + 89
frame #23: 0x000000010d2d0744 AVFoundation`-[AVPlayerItem _updateTimebase] + 73
frame #24: 0x000000010d2c8a1f AVFoundation`-[AVPlayerItem _configurePlaybackItem] + 2536
frame #25: 0x000000010d2c9762 AVFoundation`-[AVPlayerItem _attachToFigPlayer] + 1315
frame #26: 0x000000010d2c9ce8 AVFoundation`-[AVPlayerItem _addToPlayQueueOfFigPlayerOfPlayer:afterFigPlaybackItemOfItem:] + 73
frame #27: 0x000000010d2b7f09 AVFoundation`__67-[AVPlayer _createAndConfigureFigPlayerWithType:completionHandler:]_block_invoke477 + 196
frame #28: 0x000000010d2b8729 AVFoundation`-[AVPlayer _applyLinkedListOfItemsToFigPlayerUsingBlock:] + 267
frame #29: 0x000000010d2b7bea AVFoundation`__67-[AVPlayer _createAndConfigureFigPlayerWithType:completionHandler:]_block_invoke + 2586
frame #30: 0x000000010d2b71b3 AVFoundation`-[AVPlayer _createAndConfigureFigPlayerWithType:completionHandler:] + 932
frame #31: 0x000000010d2b8b38 AVFoundation`-[AVPlayer _applyPlayQueueChangesToFigPlayerWithCompletionHandler:] + 564
frame #32: 0x000000010d2b5012 AVFoundation`__103-[AVPlayer _runOnIvarAccessQueueOperationThatMayChangeCurrentItemWithPreflightBlock:modificationBlock:]_block_invoke310 + 91
frame #33: 0x000000010d2b4d10 AVFoundation`-[AVPlayer _runOnIvarAccessQueueOperationThatMayChangeCurrentItemWithPreflightBlock:modificationBlock:] + 517
frame #34: 0x000000010d2b9516 AVFoundation`-[AVPlayer replaceCurrentItemWithPlayerItem:] + 285
frame #35: 0x00000001131a6242 WebCore`WebCore::MediaPlayerPrivateAVFoundationObjC::createAVPlayer() + 610
frame #36: 0x000000011319ffd6 WebCore`WebCore::MediaPlayerPrivateAVFoundation::setPreload(WebCore::MediaPlayerEnums::Preload) + 166
frame #37: 0x0000000112c7735d WebCore`WebCore::HTMLMediaElement::updatePlayState() + 605
frame #38: 0x0000000112c78f63 WebCore`WebCore::HTMLMediaElement::playInternal() + 611
frame #39: 0x0000000112f3ded2 WebCore`WebCore::jsHTMLMediaElementPrototypeFunctionPlay(JSC::ExecState*) + 130
frame #40: 0x000002ee39e92028
frame #41: 0x00000001178ea368 JavaScriptCore`llint_entry + 22911
frame #42: 0x00000001178ea52a JavaScriptCore`llint_entry + 23361
frame #43: 0x00000001178ea52a JavaScriptCore`llint_entry + 23361
frame #44: 0x00000001178e47d9 JavaScriptCore`vmEntryToJavaScript + 326
frame #45: 0x00000001177b6959 JavaScriptCore`JSC::JITCode::execute(JSC::VM*, JSC::ProtoCallFrame*) + 169
frame #46: 0x000000011779d5ad JavaScriptCore`JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) + 493
frame #47: 0x0000000117571bd7 JavaScriptCore`JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&, WTF::NakedPtr<JSC::Exception>&) + 71
frame #48: 0x0000000112ebcc1a WebCore`WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) + 1002
frame #49: 0x0000000112b09630 WebCore`WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1ul, WTF::CrashOnOverflow, 16ul>&) + 752
frame #50: 0x0000000112b09267 WebCore`WebCore::EventTarget::fireEventListeners(WebCore::Event*) + 311
frame #51: 0x0000000112af229f WebCore`WebCore::EventContext::handleLocalEvents(WebCore::Event&) const + 95
frame #52: 0x0000000112af311f WebCore`WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WTF::PassRefPtr<WebCore::Event>) + 1023
frame #53: 0x00000001131f4c5d WebCore`WebCore::Node::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) + 29
frame #54: 0x0000000112b09078 WebCore`WebCore::EventTarget::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, int&) + 120
frame #55: 0x0000000112afe0b8 WebCore`WebCore::EventHandler::dispatchTouchEvent(WebCore::PlatformTouchEvent const&, WTF::AtomicString const&, WTF::HashMap<WebCore::EventTarget*, WTF::Vector<WTF::RefPtr<WebCore::Touch>, 0ul, WTF::CrashOnOverflow, 16ul>*, WTF::PtrHash<WebCore::EventTarget*>, WTF::HashTraits<WebCore::EventTarget*>, WTF::HashTraits<WTF::Vector<WTF::RefPtr<WebCore::Touch>, 0ul, WTF::CrashOnOverflow, 16ul>*> > const&, float, float) + 1032
frame #56: 0x0000000112b005b1 WebCore`WebCore::EventHandler::handleTouchEvent(WebCore::PlatformTouchEvent const&) + 7585
frame #57: 0x0000000112b01349 WebCore`WebCore::EventHandler::touchEvent(WebEvent*) + 169
frame #58: 0x0000000117300b36 WebKitLegacy`-[WebHTMLView touch:] + 70
frame #59: 0x00000001136a930d WebCore`-[WAKView _selfHandleEvent:] + 125
frame #60: 0x00000001136a926f WebCore`-[WAKView handleEvent:] + 63
frame #61: 0x00000001136ac424 WebCore`-[WAKWindow sendEventSynchronously:] + 196
frame #62: 0x000000010b658a64 UIKit`-[UIWebBrowserView _dispatchWebEvent:] + 74
frame #63: 0x000000010b658f4e UIKit`-[UIWebBrowserView _webTouchEventsRecognized:] + 588
frame #64: 0x000000010b2ebddb UIKit`-[UIWebTouchEventsGestureRecognizer _processTouches:withEvent:type:] + 501
frame #65: 0x000000010b2ebfeb UIKit`-[UIWebTouchEventsGestureRecognizer touchesBegan:withEvent:] + 210
frame #66: 0x000000010b4a3bcf UIKit`-[UIGestureRecognizer _touchesBegan:withEvent:] + 113
frame #67: 0x000000010b029196 UIKit`-[UIWindow _sendGesturesForEvent:] + 377
frame #68: 0x000000010b02a6c4 UIKit`-[UIWindow sendEvent:] + 849
frame #69: 0x000000010afd5dc6 UIKit`-[UIApplication sendEvent:] + 263
frame #70: 0x000000010afaf553 UIKit`_UIApplicationHandleEventQueue + 6660
frame #71: 0x000000010d9bc301 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
frame #72: 0x000000010d9b222c CoreFoundation`__CFRunLoopDoSources0 + 556
frame #73: 0x000000010d9b16e3 CoreFoundation`__CFRunLoopRun + 867
frame #74: 0x000000010d9b10f8 CoreFoundation`CFRunLoopRunSpecific + 488
frame #75: 0x000000010ee7dad2 GraphicsServices`GSEventRunModal + 161
frame #76: 0x000000010afb4f09 UIKit`UIApplicationMain + 171
* frame #77: 0x0000000108f0bf8f VIVAT`main(argc=1, argv=0x00007fff56f14618) + 111 at main.m:15
frame #78: 0x000000010ea3192d libdyld.dylib`start + 1
frame #79: 0x000000010ea3192d libdyld.dylib`start + 1
最近做iOS和HTML5交互，遇到的问题：HTML5页面是一个游戏页面能够玩游戏时能播放音乐，在真机上运行正常，但是在模拟器上运行老是崩溃。经过排查知道了是因为打了全局断点的原因，去掉全局断点运行就没有事情了。
还是没有弄明白为什么打了全局断点就崩溃了，个人感觉和HTML5实现的有关。
有知道的朋友给解惑一下吧。
其他文章：http://stackoverflow.com/questions/9683547/avaudioplayer-throws-breakpoint-in-debug-mode