链接 AssetsLibrary.framework 后逻辑测试挂在 -[MKTileCache init] () 中

Question

我的 iOS 应用程序有一堆简单的逻辑测试，我们使用 buildot 在持续集成中运行这些测试。

最近，我开始将 AssetsLibrary 框架链接到主应用程序和逻辑测试。逻辑测试包括主应用程序中的类，这些类在某些方法中使用框架，但在逻辑测试中不会调用这些类。

从那时起，我们的构建机器人的单元测试就在这个过程的早期阶段就挂起了。当这种情况发生时，Gdb'ing 到 octest，MKTileCache 中似乎存在某种线程死锁（我不在任何地方使用）：

(gdb) thread apply all bt

Thread 3 (process 77496):
#0  0x00495ff7 in -[__NSArrayM objectAtIndex:] ()
#1  0x000528fa in -[NSFileManager(NSURLExtras)     _web_createDirectoryAtPathWithIntermediateDirectories:attributes:] ()
#2  0x052a554c in TileCachePrivate::runCacheThread ()
#3  0x052a5702 in _runCacheThread ()
#4  0x95f47259 in _pthread_start ()
#5  0x95f470de in thread_start ()

Thread 2 (process 77496):
#0  0x95f40382 in kevent ()
#1  0x00c1ff36 in _dispatch_mgr_invoke ()
#2  0x00c20333 in _dispatch_queue_invoke ()
#3  0x00c20593 in _dispatch_worker_thread2 ()
#4  0x95f3f781 in _pthread_wqthread ()
#5  0x95f3f5c6 in start_wqthread ()

Thread 1 (process 77496):
#0  0x95f47aa2 in __semwait_signal ()
#1  0x95f4775e in _pthread_cond_wait ()
#2  0x95f493f8 in pthread_cond_wait$UNIX2003 ()
#3  0x052a543d in TileCachePrivate::TileCachePrivate ()
#4  0x052a68de in -[MKTileCache init] ()
#5  0x052a51f8 in +[MKTileCache sharedCache] ()
#6  0x0529eb7b in +[MKMapTileView initialize] ()
#7  0x002cfd9b in _class_initialize ()
#8  0x002d773f in prepareForMethodLookup ()
#9  0x002ce069 in lookUpMethod ()
#10 0x002ce1d6 in _class_lookupMethodAndLoadCache ()
#11 0x002e10e3 in objc_msgSend ()
#12 0x20108824 in +[NSObject(SenTestRuntimeUtilities) senAllSubclasses] ()
#13 0x201074a7 in +[SenTestSuite updateCache] ()
#14 0x20107443 in +[SenTestSuite suiteForBundleCache] ()
#15 0x201073a4 in +[SenTestSuite testSuiteForBundlePath:] ()
#16 0x2010606b in +[SenTestProbe specifiedTestSuite] ()
#17 0x20106792 in +[SenTestProbe runTests:] ()
#18 0x000023c7 in ?? ()
#19 0x000025f2 in ?? ()
#20 0x0000209a in ?? ()
#21 0x00002049 in ?? ()

有人见过类似的情况吗？