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我有一个正在生产的 iOS 应用程序，并收到了以下我无法重新创建的 Bugsnag 异常。任何人都可以帮助我了解这里发生了什么，因为附加的堆栈跟踪并不能帮助我确定它的确切来源。

EXC_BAD_ACCESS Attempted to dereference garbage pointer 0xed03a. 
    /usr/lib/system/libdispatch.dylib _dispatch_dispose
    /usr/lib/system/libdispatch.dylib -[OS_dispatch_object _xref_dispose]
    /usr/lib/system/libdispatch.dylib __destroy_helper_block_
    /usr/lib/system/libsystem_blocks.dylib _Block_release
    Frameworks/CoreFoundation.framework/CoreFoundation __CFArrayReleaseValues
    Frameworks/CoreFoundation.framework/CoreFoundation CFRelease
    Frameworks/CFNetwork.framework/CFNetwork _ZN19RunloopBlockContext7performEv
    Frameworks/CFNetwork.framework/CFNetwork _ZN17MultiplexerSource7performEv
    Frameworks/CFNetwork.framework/CFNetwork _ZN17MultiplexerSource8_performEPv
    Frameworks/CoreFoundation.framework/CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
    Frameworks/CoreFoundation.framework/CoreFoundation __CFRunLoopDoSources0
    Frameworks/CoreFoundation.framework/CoreFoundation __CFRunLoopRun
    Frameworks/CoreFoundation.framework/CoreFoundation CFRunLoopRunSpecific
    Frameworks/CFNetwork.framework/CFNetwork +[NSURLConnection(Loader) _resourceLoadLoop:]
    Frameworks/Foundation.framework/Foundation __NSThread__start__
    /usr/lib/system/libsystem_pthread.dylib _pthread_body
    /usr/lib/system/libsystem_pthread.dylib _pthread_start
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