Swift 2.0隨機EXC_BAD_ACCESS

Question

我遇到了一些非常奇怪的EXC_BAD_ACCESS崩潰，這些崩潰完全可以與最后2個Xcode 7 Beta版本（包括昨晚的GM）重現：

運行我的應用程序時，AFNetworking在AFURLConnectionOperation.m第154行中發生了EXC_BAD_ACCESS消息崩潰。更准確地說，這是堆棧跟蹤：

thread #1: tid = 0x23b173, 0x000000010b89beaf CoreFoundation`___forwarding___ + 767, queue = 'com.apple.main-thread', stop reason = EXC_BREAKPOINT (code=EXC_I386_BPT, subcode=0x0)
    frame #0: 0x000000010b89beaf CoreFoundation`___forwarding___ + 767
    frame #1: 0x000000010b89bb28 CoreFoundation`__forwarding_prep_0___ + 120
  * frame #2: 0x0000000105a4507e MyApp`-[AFURLConnectionOperation .cxx_destruct](self=0x00007fc4d873aa20, _cmd=(null)) + 494 at AFURLConnectionOperation.m:154
    frame #3: 0x000000010af637bb libobjc.A.dylib`object_cxxDestructFromClass(objc_object*, objc_class*) + 127
    frame #4: 0x000000010af6e390 libobjc.A.dylib`objc_destructInstance + 93
    frame #5: 0x000000010b94e7c6 CoreFoundation`-[NSObject(NSObject) __dealloc_zombie] + 150
    frame #6: 0x00000001087ee9df Foundation`-[NSOperation dealloc] + 89
    frame #7: 0x0000000105a3dca2 MyApp`-[AFURLConnectionOperation dealloc](self=0x00007fc4d873aa20, _cmd="dealloc") + 162 at AFURLConnectionOperation.m:216
    frame #8: 0x000000010af78afe libobjc.A.dylib`objc_object::sidetable_release(bool) + 232
    frame #9: 0x0000000105a31dd1 MyApp`__destroy_helper_block_((null)=0x00007fc4d8b27000) + 65 at AFHTTPRequestOperation.m:0
    frame #10: 0x000000010d1226b1 libsystem_blocks.dylib`_Block_release + 128
    frame #11: 0x000000010d0a549b libdispatch.dylib`_dispatch_client_callout + 8
    frame #12: 0x000000010d08d34b libdispatch.dylib`_dispatch_main_queue_callback_4CF + 1738
    frame #13: 0x000000010b8a63e9 CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 9
    frame #14: 0x000000010b867939 CoreFoundation`__CFRunLoopRun + 2073
    frame #15: 0x000000010b866e98 CoreFoundation`CFRunLoopRunSpecific + 488
    frame #16: 0x000000010dd2cad2 GraphicsServices`GSEventRunModal + 161
    frame #17: 0x00000001095c9676 UIKit`UIApplicationMain + 171
    frame #18: 0x0000000105767d3f MyApp`main(argc=7, argv=0x00007fff5a541620) + 111 at main.m:33
    frame #19: 0x000000010d0da92d libdyld.dylib`start + 1

我在我的方案中設置了啟用Zombie Objects並出現以下錯誤

*** -[NSMutableURLRequest release]: message sent to deallocated instance 0x7fc4d8acc460

你們中的任何一個人都知道造成撞車的原因是什么嗎？ 使用Xcode 6就像魅力一樣，但我真的很想在我的代碼中使用新的Swift功能......

Answer 1

要回答我自己的問題，請將此處留給那些可能遇到同樣問題的人：

顯然，Swift 2.0編譯器不喜歡通過inout參數傳遞閉包。 我有一個閉包，可用於進一步自定義我的請求，該請求將NSMutableURLRequest類型的對象作為inout參數。 一旦更改此閉包只是返回請求並刪除inout一切按預期工作...