我在IBOutlet子类中使用强PDFView来自定义NSViewController但是在切换视图控制器后我在10.11崩溃了。在10.8,10.9和10.10上一切正常。我正在使用ARC。
self.activeRootViewController = controller;
self.backgroundWindow.contentView = controller.view;
@property (strong) IBOutlet MYPDFView* pdfView; // property inside NSViewController subclass.
MYPDFView对象0x10ac1bc50在已经解除分配时被过度释放; 在objc_overrelease_during_dealloc_error上打破调试
我在objc_overrelease_during_dealloc_error添加了断点但无法解决此问题。
有人可以帮帮我吗？
dealloc方法MYPDFView只被调用一次。
来自lldb的回溯：
objc[23395]: MYPDFView object 0x10ac1bc50 overreleased while already deallocating; break on objc_overrelease_during_dealloc_error to debug
Process 23395 stopped
* thread #1: tid = 0x11b04b, 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1
frame #0: 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error
libobjc.A.dylib`objc_overrelease_during_dealloc_error:
-> 0x7fff926bcb1c <+0>: retq
0x7fff926bcb1d <+1>: nop
libobjc.A.dylib`objc_object::sidetable_lock:
0x7fff926bcb1e <+0>: movl %edi, %eax
0x7fff926bcb20 <+2>: shrl $0x9, %eax
(lldb) bt
* thread #1: tid = 0x11b04b, 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 2.1
* frame #0: 0x00007fff926bcb1c libobjc.A.dylib`objc_overrelease_during_dealloc_error
frame #1: 0x00007fff926bd78a libobjc.A.dylib`objc_object::overrelease_error() + 42
frame #2: 0x00007fff9ad13102 AppKit`-[NSImmediateActionGestureRecognizer dealloc] + 42
frame #3: 0x00007fff9702ce3c CoreFoundation`-[__NSArrayM removeAllObjects] + 252
frame #4: 0x00007fff9a426caf AppKit`-[NSView removeAllGestureRecognizers] + 294
frame #5: 0x00007fff9a4257b3 AppKit`-[NSView _finalizeWithReferenceCounting] + 1333
frame #6: 0x00007fff9a425256 AppKit`-[NSView dealloc] + 151
frame #7: 0x00007fff906ef366 PDFKit`-[PDFView dealloc] + 834
frame #8: 0x000000010003236d MYApp`-[MYPDFView dealloc] + 125
frame #9: 0x00007fff926a6094 libobjc.A.dylib`(anonymous namespace)::AutoreleasePoolPage::pop(void*) + 476
frame #10: 0x00007fff96fc7a72 CoreFoundation`_CFAutoreleasePoolPop + 50
frame #11: 0x00007fff9c7f30fe Foundation`__NSFireDelayedPerform + 441
frame #12: 0x00007fff970119f4 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
frame #13: 0x00007fff97011683 CoreFoundation`__CFRunLoopDoTimer + 1075
frame #14: 0x00007fff970111da CoreFoundation`__CFRunLoopDoTimers + 298
frame #15: 0x00007fff970086d1 CoreFoundation`__CFRunLoopRun + 1841
frame #16: 0x00007fff97007d38 CoreFoundation`CFRunLoopRunSpecific + 296
frame #17: 0x00007fff9517dd55 HIToolbox`RunCurrentEventLoopInMode + 235
frame #18: 0x00007fff9517da97 HIToolbox`ReceiveNextEventCommon + 184
frame #19: 0x00007fff9517d9cf HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71
frame #20: 0x00007fff9a433f3a AppKit`_DPSNextEvent + 1067
frame #21: 0x00007fff9a433369 AppKit`-[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
frame #22: 0x00007fff9a427ecc AppKit`-[NSApplication run] + 682
frame #23: 0x00007fff9a3f1162 AppKit`NSApplicationMain + 1176
frame #24: 0x0000000100003452 MYApp`main + 34
frame #25: 0x00007fff8eecc5ad libdyld.dylib`start + 1
frame #26: 0x00007fff8eecc5ad libdyld.dylib`start + 1
(lldb)