Open Radar

 
Summary:
On beta 6 of OS X El Capitan, iOS Simulator and interface builder processes crash immediately on startup with a CFPreferences-related trace. This is with both Xcode 6 and Xcode 7 beta 4.

Steps to Reproduce:
On beta 6, start an iPhone Simulator or open a storyboard/xib in Xcode.

Expected Results:
The Simulator starts & the storyboard opens as usual.

Actual Results:
Lots of crashes during startup in internal tools with variants of the following crash log (see attached zip for more):

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libsystem_pthread.dylib       	0x03bee0ef pthread_mutex_lock + 12
1   com.apple.CoreFoundation      	0x027f2f2f CFBundleGetInfoDictionary + 31
2   com.apple.CoreFoundation      	0x027fea28 CFBundleGetIdentifier + 24
3   com.apple.CoreFoundation      	0x029321cf -[CFPrefsPlistSource _isSharedInTheiOSSimulator] + 271
4   com.apple.CoreFoundation      	0x02812367 -[CFPrefsPlistSource createSynchronizeMessage] + 407
5   com.apple.CoreFoundation      	0x02933743 __62-[CFPrefsPlistSource createRequestNewContentMessageForDaemon:]_block_invoke + 67
6   com.apple.CoreFoundation      	0x02933657 -[CFPrefsPlistSource createRequestNewContentMessageForDaemon:] + 215
7   com.apple.CoreFoundation      	0x0292a036 -[CFPrefsSearchListSource createRequestNewContentMessageForDaemon:] + 182
8   com.apple.CoreFoundation      	0x0292a25b -[CFPrefsSearchListSource generationCountFromListOfSources:count:] + 139
9   com.apple.CoreFoundation      	0x028170ac -[CFPrefsSearchListSource alreadylocked_copyDictionary] + 364
10  com.apple.CoreFoundation      	0x0281169c -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] + 60
11  com.apple.CoreFoundation      	0x0291566a ___CFPreferencesCopyAppValueWithContainer_block_invoke + 74
12  com.apple.CoreFoundation      	0x02928e13 +[CFPrefsSearchListSource withSearchListForIdentifier:container:perform:] + 835
13  com.apple.CoreFoundation      	0x029155e6 _CFPreferencesCopyAppValueWithContainer + 182
14  com.apple.CoreFoundation      	0x0280a550 CFPreferencesCopyAppValue + 32
15  com.apple.Foundation          	0x01f4ee00 -[NSUserDefaults(NSUserDefaults) init] + 1604
16  com.apple.Foundation          	0x01f4e0b3 +[NSUserDefaults(NSUserDefaults) standardUserDefaults] + 103
17  com.apple.dt.IBFoundation     	0x009635ed -[IBLogAspect initWithName:] + 186
18  com.apple.dt.IBFoundation     	0x009634f2 __33+[IBLogAspect logAspectWithName:]_block_invoke_2 + 66
19  com.apple.dt.IBFoundation     	0x008e63a6 -[NSMutableDictionary(IBMutableDictionaryAdditions) ib_objectForKey:creatingIfNecessaryWithBlock:] + 89
20  com.apple.dt.IBFoundation     	0x00963417 +[IBLogAspect logAspectWithName:] + 143
21  com.apple.dt.IBFoundation     	0x0096a12a __IBMessageChannelLogAspect_block_invoke + 47
22  libdispatch.dylib             	0x038be41f _dispatch_client_callout + 14
23  libdispatch.dylib             	0x038aa917 dispatch_once_f + 83
24  libdispatch.dylib             	0x038aa8bf dispatch_once + 31
25  com.apple.dt.IBFoundation     	0x00964be3 IBMessageChannelLogAspect + 69
26  com.apple.dt.IBFoundation     	0x00964b47 IBMessageChannelInitializeLoggingOnStartup + 19
27  dyld_sim                      	0x000a247f ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 291
28  dyld_sim                      	0x000a25d8 ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 64
29  dyld_sim                      	0x0009e741 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 335
30  dyld_sim                      	0x0009e6d4 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 226
31  dyld_sim                      	0x0009e6d4 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 226
32  dyld_sim                      	0x0009e6d4 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 226
33  dyld_sim                      	0x0009da94 ImageLoader::processInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 104
34  dyld_sim                      	0x0009db23 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 79
35  dyld_sim                      	0x00093c64 dyld::initializeMainExecutable() + 208
36  dyld_sim                      	0x0009718d dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 3193
37  dyld_sim                      	0x00093221 start_sim + 125
38  dyld                          	0x8fee02b6 dyld::useSimulatorDyld(int, macho_header const*, char const*, int, char const**, char const**, char const**, unsigned long*) + 1057
39  dyld                          	0x8fedef57 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**, unsigned long*) + 202
40  dyld                          	0x8fedb231 dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*, unsigned long*) + 427
41  dyld                          	0x8fedb047 _dyld_start + 71


Regression:
Worked OK on beta 5

Notes:
-