Xcode 7.3 crash at breakpoint

Ever since updating to Xcode 7.3 this morning I'm getting a consistent crash at a breakpoint I've set at line 06 below. I also encounter this crash at other lines as well, although sometimes it works. I'm using cocoapods, but not carthage. Cocoapods is updated to the latest version.


Things I've tried

I've tried completely removing Xcode, along with settings and reinstalling it, but had no luck.

I've also removed any plug-ins, but had no luck either.


Is anyone else experiencing this crash?

Any suggestions on what I can do to fix it?


Thanks for any help you can offer!

Andrew Ash



func playAudioForWordBlock(wordBlock: MGWordBlock) {
        let dispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)
        ensureAudioCanPlayOnSilent()
        dispatch_async(dispatchQueue, {[weak self] in
            var playerItems: [AVPlayerItem] = []
            if self!.level.isComplete() == true && self!.level.completeUrl() != nil {

Try an option-clean build folder.

Thread 21 Crashed:: <DBGLLDBSessionThread (pid=367)>  Dispatch queue: DVTInvalidationPreventionQueue
0   libsystem_c.dylib               strlen + 18
1   com.apple.LLDB.framework        swift::DeclName::print(llvm::raw_ostream&, bool) const + 63
2   com.apple.LLDB.framework        swift::DeclName::printPretty(llvm::raw_ostream&) const + 14
3   com.apple.LLDB.framework        formatDiagnosticText(llvm::StringRef, llvm::ArrayRef<swift::DiagnosticArgument>, llvm::raw_ostream&) + 2809
4   com.apple.LLDB.framework        swift::DiagnosticEngine::emitDiagnostic(swift::Diagnostic const&) + 3115
5   com.apple.LLDB.framework        swift::DiagnosticEngine::flushActiveDiagnostic() + 285
6   com.apple.LLDB.framework        void llvm::function_ref<void (std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>::callback_fn<swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int)::$_1>(long, std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>) + 605
7   com.apple.LLDB.framework        bool llvm::function_ref<bool (std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>::callback_fn<swift::FileUnit::forAllVisibleModules(llvm::function_ref<void (std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>)::'lambda'(std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>(long, std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>) + 59
8   com.apple.LLDB.framework        swift::ModuleDecl::forAllVisibleModules(llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, bool, llvm::function_ref<bool (std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>) + 579
9   com.apple.LLDB.framework        swift::FileUnit::forAllVisibleModules(llvm::function_ref<bool (std::__1::pair<llvm::ArrayRef<std::__1::pair<swift::Identifier, swift::SourceLoc> >, swift::ModuleDecl*>)>) + 71
10  com.apple.LLDB.framework        swift::performTypeChecking(swift::SourceFile&, swift::TopLevelContext&, swift::OptionSet<swift::TypeCheckingFlags, unsigned int>, unsigned int) + 1407
11  com.apple.LLDB.framework        lldb_private::SwiftExpressionParser::Parse(lldb_private::Stream&, unsigned int, unsigned int, unsigned int) + 9027
12  com.apple.LLDB.framework        lldb_private::SwiftUserExpression::Parse(lldb_private::Stream&, lldb_private::ExecutionContext&, lldb_private::ExecutionPolicy, bool, bool, unsigned int) + 850
13  com.apple.LLDB.framework        lldb_private::UserExpression::Evaluate(lldb_private::ExecutionContext&, lldb_private::EvaluateExpressionOptions const&, char const*, char const*, lldb_private::SharingPtr<lldb_private::ValueObject>&, lldb_private::Error&, unsigned int, std::__1::shared_ptr<lldb_private::Module>*) + 929
14  com.apple.LLDB.framework        lldb_private::Target::EvaluateExpression(char const*, lldb_private::ExecutionContextScope*, lldb_private::SharingPtr<lldb_private::ValueObject>&, lldb_private::EvaluateExpressionOptions const&) + 468
15  com.apple.LLDB.framework        lldb::SBFrame::EvaluateExpression(char const*, lldb::SBExpressionOptions const&) + 440
... (abbreviated)

Update: When I deleted the expression "self!.level.completeUrl()" from the debugger the crash stopped happening.

I've gone ahead and filed a bug report.

On occasion it's helpful to be able to evaluate such expressions, so if someone knows a workaround I'd still welcome it

for me what helpped was setting CLANG_ENABLE_MODULE_DEBUGGING to NO

other solutions like cleaning build folder did not work for me

also my breakpoint had no expression realted to it so emotiveapps solution didnt work for me wither

This is so bad a problem, that for now I've reverted back to Xcode 7.2!


Has anybody created an Apple Bug Report for this issue?

Same for me, disabling CLANG_ENABLE_MODULE_DEBUGGING stopped the crash.

I am experiencing this crash when I place a breakpoint in any of our view controllers. Disabling CLANG_ENABLE_MODULE_DEBUGGING stopped the crash as well.

I am seeing the same issue as well. But I cannot find CLANG_ENABLE_MODULE_DEBUGGING setting in the build settings. Can someone please post a screen shot or the reason why I cannot find this in build settings?

I've got this issue as well however disabling clang module debugging did not do the trick. Unfortunately, I need Xcode 7.3 due to its iOS 9.3 support because my test devices are all updated. Does anyone have any suggestions?


Crashed Thread:        18  <DBGLLDBSessionThread (pid=6660)>  Dispatch queue: DVTInvalidationPreventionQueue


Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000410
Exception Note:        EXC_CORPSE_NOTIFY


VM Regions Near 0x410:
-->
    __TEXT                 00000001058e4000-00000001058e8000 [   16K] r-x/rwx SM=COW  /Applications/Xcode.app/Contents/MacOS/Xcode


Application Specific Information:
ProductBuildVersion: 7D175


Global Trace Buffer (reverse chronological seconds):
270.414157   CFNetwork                 0x00007fff9d1cf510 NSURLConnection finished with error - code -1100
270.604172   CFNetwork                 0x00007fff9d110447 TCP Conn 0x7fb6741b6230 SSL Handshake DONE
270.683352   CFNetwork                 0x00007fff9d110447 TCP Conn 0x7fb6743654d0 SSL Handshake DONE
270.937387   CFNetwork                 0x00007fff9d110323 TCP Conn 0x7fb6741b6230 starting SSL negotiation
270.937580   CFNetwork                 0x00007fff9d10eced TCP Conn 0x7fb6741b6230 complete. fd: 47, err: 0
270.938039   CFNetwork                 0x00007fff9d19d5c7 TCP Conn 0x7fb6741b6230 event 1. err: 0
270.953339   CFNetwork                 0x00007fff9d110323 TCP Conn 0x7fb6743654d0 starting SSL negotiation
270.954515   CFNetwork                 0x00007fff9d10eced TCP Conn 0x7fb6743654d0 complete. fd: 46, err: 0
270.957235   CFNetwork                 0x00007fff9d19d5c7 TCP Conn 0x7fb6743654d0 event 1. err: 0
271.057595   CFNetwork                 0x00007fff9d10dfbf TCP Conn 0x7fb6743654d0 started
271.057643   CFNetwork                 0x00007fff9d10dfbf TCP Conn 0x7fb6741b6230 started
271.371562   CFNetwork                 0x00007fff9d0d1c42 Creating default cookie storage with process/bundle identifier
271.371568   CFNetwork                 0x00007fff9d0d1bda Faulting in CFHTTPCookieStorage singleton
271.371568   CFNetwork                 0x00007fff9d0d1a69 Faulting in NSHTTPCookieStorage singleton
271.377162   CFNetwork                 0x00007fff9d1cf510 NSURLConnection finished with error - code -1100
271.379493   CFNetwork                 0x00007fff9d1cf510 NSURLConnection finished with error - code -1100

same issue here, disabling clang module debugging didn't work as well

any ideas?




Thread 30 Crashed:

0 libsystem_c.dylib 0x00007fff8e263152 strlen + 18

1 com.apple.LLDB.framework 0x0000000115985ccf clang::HeaderMap::lookupFilename(llvm::StringRef, llvm::SmallVectorImpl<char>&) const + 399

2 com.apple.LLDB.framework 0x0000000115987a6f clang::DirectoryLookup::LookupFile(llvm::StringRef&, clang::HeaderSearch&, llvm::SmallVectorImpl<char>*, llvm::SmallVectorImpl<char>*, clang::ModuleMap::KnownHeader*, bool&, bool&, llvm::SmallVectorImpl<char>&) const + 287

3 com.apple.LLDB.framework 0x000000011598926c clang::HeaderSearch::LookupFile(llvm::StringRef, clang::SourceLocation, bool, clang::DirectoryLookup const*, clang::DirectoryLookup const*&, llvm::ArrayRef<std::__1::pair<clang::FileEntry const*, clang::DirectoryEntry const*> >, llvm::SmallVectorImpl<char>*, llvm::SmallVectorImpl<char>*, clang::ModuleMap::KnownHeader*, bool) + 1820

4 com.apple.LLDB.framework 0x00000001159bce67 clang::Preprocessor::LookupFile(clang::SourceLocation, llvm::StringRef, bool, clang::DirectoryLookup const*, clang::FileEntry const*, clang::DirectoryLookup const*&, llvm::SmallVectorImpl<char>*, llvm::SmallVectorImpl<char>*, clang::ModuleMap::KnownHeader*, bool) + 1479

5 com.apple.LLDB.framework 0x00000001159bf9f9 clang::Preprocessor::HandleIncludeDirective(clang::SourceLocation, clang::Token&, clang::DirectoryLookup const*, clang::FileEntry const*, bool) + 2505

6 com.apple.LLDB.framework 0x00000001159bd74b clang::Preprocessor::HandleDirective(clang::Token&) + 1307

7 com.apple.LLDB.framework 0x00000001159996b1 clang::Lexer::LexTokenInternal(clang::Token&, bool) + 10657

8 com.apple.LLDB.framework 0x00000001159e93a4 clang::Preprocessor::Lex(clang::Token&) + 68

9 com.apple.LLDB.framework 0x0000000115a6bb58 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&) + 232

10 com.apple.LLDB.framework 0x00000001159ed375 clang::ParseAST(clang::Sema&, bool, bool) + 501

11 com.apple.LLDB.framework 0x0000000115959a00 clang::FrontendAction::Execute() + 64

12 com.apple.LLDB.framework 0x000000011592aec2 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 930

13 com.apple.LLDB.framework 0x00000001151bd6a0 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) + 272

14 com.apple.LLDB.framework 0x00000001151bd7e0 RunSafelyOnThread_Dispatch(void*) + 48

15 com.apple.LLDB.framework 0x00000001152066ad ExecuteOnThread_Dispatch(void*) + 13

16 libsystem_pthread.dylib 0x00007fff9de3ec13 _pthread_body + 131

17 libsystem_pthread.dylib 0x00007fff9de3eb90 _pthread_start + 168

18 libsystem_pthread.dylib 0x00007fff9de3c375 thread_start + 13



Thread 30 crashed with X86 Thread State (64-bit):

rax: 0x0000000000002cc1 rbx: 0x0000000000000000 rcx: 0x0000000000000000 rdx: 0x0000000000000000

rdi: 0x0000000000000000 rsi: 0x00000000000020bf rbp: 0x0000700002f74d60 rsp: 0x0000700002f74d60

r8: 0x0000000000000000 r9: 0x0000700002f76120 r10: 0x0000000000000001 r11: 0x000000000062ab71

r12: 0x00007ffd76b31200 r13: 0x0000000000007797 r14: 0x00007ffd76b312e0 r15: 0x00001f7d000020a9

rip: 0x00007fff8e263152 rfl: 0x0000000000000246 cr2: 0x0000000131de3d20


Logical CPU: 0

Error Code: 0x00000000

Trap Number: 222

Same here, crashes on every breakpoint


Process:               Xcode [11729]
Path:                  /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier:            com.apple.dt.Xcode
Version:               7.3 (10183.3)
Build Info:            IDEFrameworks-10183003000000000~2
App Item ID:           497799835
App External ID:       816750016
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Xcode [11729]
User ID:               1560081602


Date/Time:             2016-04-19 11:11:24.901 +0300
OS Version:            Mac OS X 10.11.4 (15E65)
Report Version:        11
Anonymous UUID:        68D4D17A-0756-73DB-1412-54B15AF2D362


Sleep/Wake UUID:       20835623-820C-4C46-9FD2-1922CA93491D


Time Awake Since Boot: 2200 seconds
Time Since Wake:       740 seconds


System Integrity Protection: enabled


Crashed Thread:        29  <DBGLLDBSessionThread (pid=12066)>  Dispatch queue: DVTInvalidationPreventionQueue


Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000410
Exception Note:        EXC_CORPSE_NOTIFY


VM Regions Near 0x410:
-->
    __TEXT                 0000000106a06000-0000000106a0a000 [   16K] r-x/rwx SM=COW  /Applications/Xcode.app/Contents/MacOS/Xcode


Application Specific Information:
ProductBuildVersion: 7D175


Global Trace Buffer (reverse chronological seconds):
127.527463   CFNetwork                 0x00007fff9c2e0447 TCP Conn 0x7fe04d769650 SSL Handshake DONE
127.973249   CFNetwork                 0x00007fff9c2e0323 TCP Conn 0x7fe04d769650 starting SSL negotiation
127.974495   CFNetwork                 0x00007fff9c2deced TCP Conn 0x7fe04d769650 complete. fd: 49, err: 0
127.978536   CFNetwork                 0x00007fff9c36d5c7 TCP Conn 0x7fe04d769650 event 1. err: 0
128.262440   CFNetwork                 0x00007fff9c2ddfbf TCP Conn 0x7fe04d769650 started
128.308769   CFNetwork                 0x00007fff9c2a1c42 Creating default cookie storage with process/bundle identifier
128.308769   CFNetwork                 0x00007fff9c2a1bda Faulting in CFHTTPCookieStorage singleton
128.308769   CFNetwork                 0x00007fff9c2a1a69 Faulting in NSHTTPCookieStorage singleton
128.316834   CFNetwork                 0x00007fff9c39f510 NSURLConnection finished with error - code -1100


Thread 0:: Dispatch queue: com.apple.main-thread
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.HIToolbox           0x00007fff98fb6935 RunCurrentEventLoopInMode + 235
6   com.apple.HIToolbox           0x00007fff98fb676f ReceiveNextEventCommon + 432
7   com.apple.HIToolbox           0x00007fff98fb65af _BlockUntilNextEventMatchingListInModeWithFilter + 71
8   com.apple.AppKit               0x00007fff9c614efa _DPSNextEvent + 1067
9   com.apple.AppKit               0x00007fff9c61432a -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
10  com.apple.dt.DVTKit           0x0000000107174449 -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 396
11  com.apple.AppKit               0x00007fff9c608e84 -[NSApplication run] + 682
12  com.apple.AppKit               0x00007fff9c5d246c NSApplicationMain + 1176
13  com.apple.dt.Xcode             0x0000000106a0739b 0x106a06000 + 5019
14  libdyld.dylib                 0x00007fff9043e5ad start + 1


Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib         0x00007fff982a8efa kevent_qos + 10
1   libdispatch.dylib             0x00007fff9bdfb165 _dispatch_mgr_invoke + 216
2   libdispatch.dylib             0x00007fff9bdfadcd _dispatch_mgr_thread + 52


Thread 2:
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.Foundation           0x00007fff9ffa2dd9 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 270
6   com.apple.DTDeviceKitBase     0x0000000110f3d755 -[DTDKRemoteDeviceDataListener listenerThreadImplementation] + 1075
7   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
8   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
9   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
10  libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 3:: com.apple.CFSocket.private
0   libsystem_kernel.dylib         0x00007fff982a807a __select + 10
1   com.apple.CoreFoundation       0x00007fff9e3b04fa __CFSocketManager + 762
2   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
3   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
4   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 4:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 5:: com.apple.NSURLConnectionLoader
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.CFNetwork           0x00007fff9c2a5111 +[NSURLConnection(Loader) _resourceLoadLoop:] + 412
6   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
7   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
8   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
9   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 6:: com.apple.NSEventThread
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.AppKit               0x00007fff9c76ae99 _NSEventThread + 149
6   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
7   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
8   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 7:: DYMobileDeviceManager
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.Foundation           0x00007fff9ffa2dd9 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 270
6   com.apple.Foundation           0x00007fff9ffa2cb8 -[NSRunLoop(NSRunLoop) run] + 74
7   com.apple.GPUToolsMobileFoundation 0x000000011b6b42a1 -[DYMobileDeviceManager _deviceNotificationThread:] + 134
8   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
9   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
10  libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
11  libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 8:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Xcode.DevToolsCore   0x00000001109ab945 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 445
3   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
4   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
5   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
6   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 9:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Xcode.DevToolsCore   0x00000001109ab945 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 445
3   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
4   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
5   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
6   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 10:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Xcode.DevToolsCore   0x00000001109ab945 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 445
3   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
4   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
5   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
6   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 11:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Xcode.DevToolsCore   0x00000001109ab945 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 445
3   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
4   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
5   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
6   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 12:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Xcode.DevToolsCore   0x00000001109ab945 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 445
3   com.apple.Foundation           0x00007fff9ffb3d64 __NSThread__start__ + 1351
4   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
5   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
6   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 13:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 14:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 15:: Dispatch queue: NSOperationQueue 0x7fe0508da100 :: NSOperation 0x7fe057f9fd20 (QOS: USER_INTERACTIVE)
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Foundation           0x00007fffa008051a -[__NSOperationInternal _waitUntilFinished:] + 131
3   com.apple.Foundation           0x00007fffa004bc2a -[NSOperationQueue waitUntilAllOperationsAreFinished] + 254
4   com.apple.dt.DVTFoundation     0x0000000106b56134 -[DVTOperationGroup main] + 67
5   com.apple.Foundation           0x00007fff9ffc3b7a -[__NSOperationInternal _start:] + 654
6   com.apple.dt.DVTFoundation     0x0000000106b560e6 -[DVTOperationGroup start] + 111
7   com.apple.Foundation           0x00007fff9ffbfb64 __NSOQSchedule_f + 194
8   libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
9   libdispatch.dylib             0x00007fff9bdfa03b _dispatch_queue_drain + 754
10  libdispatch.dylib             0x00007fff9be00707 _dispatch_queue_invoke + 549
11  libdispatch.dylib             0x00007fff9bdf8d53 _dispatch_root_queue_drain + 538
12  libdispatch.dylib             0x00007fff9bdf8b00 _dispatch_worker_thread3 + 91
13  libsystem_pthread.dylib       0x00007fff92bc44de _pthread_wqthread + 1129
14  libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 16:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 17:: Dispatch queue: parsing queue
0   libsystem_kernel.dylib         0x00007fff982a1fae semaphore_wait_trap + 10
1   libdispatch.dylib             0x00007fff9be00cb2 _dispatch_semaphore_wait_slow + 224
2   com.apple.dt.instruments.DTXConnectionServices 0x0000000108dbeb57 -[DTXMessageParser waitForMoreData:incrementalBuffer:] + 87
3   com.apple.dt.instruments.DTXConnectionServices 0x0000000108dbe639 -[DTXMessageParser parseMessageWithExceptionHandler:] + 64
4   com.apple.dt.instruments.DTXConnectionServices 0x0000000108dbe3ac __68-[DTXMessageParser initWithMessageHandler:andParseExceptionHandler:]_block_invoke + 39
5   libdispatch.dylib             0x00007fff9be0093d _dispatch_call_block_and_release + 12
6   libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
7   libdispatch.dylib             0x00007fff9bdfa03b _dispatch_queue_drain + 754
8   libdispatch.dylib             0x00007fff9be00707 _dispatch_queue_invoke + 549
9   libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
10  libdispatch.dylib             0x00007fff9bdf929b _dispatch_root_queue_drain + 1890
11  libdispatch.dylib             0x00007fff9bdf8b00 _dispatch_worker_thread3 + 91
12  libsystem_pthread.dylib       0x00007fff92bc44de _pthread_wqthread + 1129
13  libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 18:: Dispatch queue: NSOperationQueue 0x7fe057f9f2d0 :: NSOperation 0x7fe057fa7280 (QOS: USER_INTERACTIVE)
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Foundation           0x00007fffa008051a -[__NSOperationInternal _waitUntilFinished:] + 131
3   com.apple.Foundation           0x00007fffa004bc2a -[NSOperationQueue waitUntilAllOperationsAreFinished] + 254
4   com.apple.dt.DVTFoundation     0x0000000106b56134 -[DVTOperationGroup main] + 67
5   com.apple.Foundation           0x00007fff9ffc3b7a -[__NSOperationInternal _start:] + 654
6   com.apple.dt.DVTFoundation     0x0000000106b560e6 -[DVTOperationGroup start] + 111
7   com.apple.Foundation           0x00007fff9ffbfb64 __NSOQSchedule_f + 194
8   libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
9   libdispatch.dylib             0x00007fff9bdfa03b _dispatch_queue_drain + 754
10  libdispatch.dylib             0x00007fff9be00707 _dispatch_queue_invoke + 549
11  libdispatch.dylib             0x00007fff9bdf8d53 _dispatch_root_queue_drain + 538
12  libdispatch.dylib             0x00007fff9bdf8b00 _dispatch_worker_thread3 + 91
13  libsystem_pthread.dylib       0x00007fff92bc44de _pthread_wqthread + 1129
14  libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 19:: Dispatch queue: NSOperationQueue 0x7fe057fa02a0 :: NSOperation 0x7fe057fa3d70 (QOS: USER_INTERACTIVE)
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.Foundation           0x00007fffa008051a -[__NSOperationInternal _waitUntilFinished:] + 131
3   com.apple.Foundation           0x00007fffa004bc2a -[NSOperationQueue waitUntilAllOperationsAreFinished] + 254
4   com.apple.dt.DVTFoundation     0x0000000106b56134 -[DVTOperationGroup main] + 67
5   com.apple.Foundation           0x00007fff9ffc3b7a -[__NSOperationInternal _start:] + 654
6   com.apple.dt.DVTFoundation     0x0000000106b560e6 -[DVTOperationGroup start] + 111
7   com.apple.Foundation           0x00007fff9ffbfb64 __NSOQSchedule_f + 194
8   libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
9   libdispatch.dylib             0x00007fff9bdfa03b _dispatch_queue_drain + 754
10  libdispatch.dylib             0x00007fff9be00707 _dispatch_queue_invoke + 549
11  libdispatch.dylib             0x00007fff9bdf8d53 _dispatch_root_queue_drain + 538
12  libdispatch.dylib             0x00007fff9bdf8b00 _dispatch_worker_thread3 + 91
13  libsystem_pthread.dylib       0x00007fff92bc44de _pthread_wqthread + 1129
14  libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 20:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 21:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 22:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 23:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 24:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 25:
0   libsystem_kernel.dylib         0x00007fff982a7f8a __read_nocancel + 10
1   libsystem_c.dylib             0x00007fffa0f2a15d _sread + 16
2   libsystem_c.dylib             0x00007fffa0f29771 __srefill1 + 24
3   libsystem_c.dylib             0x00007fffa0f22a67 fgets + 106
4   com.apple.LLDB.framework       0x00000001136ca24f lldb_private::IOHandlerEditline::GetLine(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >&, bool&) + 359
5   com.apple.LLDB.framework       0x00000001136ca6d9 lldb_private::IOHandlerEditline::Run() + 175
6   com.apple.LLDB.framework       0x00000001135c8a91 lldb_private::Debugger::ExecuteIOHandlers() + 63
7   com.apple.LLDB.framework       0x00000001135ca6f6 lldb_private::Debugger::IOHandlerThread(void*) + 14
8   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
9   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
10  libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 26:
0   libsystem_kernel.dylib         0x00007fff982a1f72 mach_msg_trap + 10
1   libsystem_kernel.dylib         0x00007fff982a13b3 mach_msg + 55
2   com.apple.CoreFoundation       0x00007fff9e3731c4 __CFRunLoopServiceMachPort + 212
3   com.apple.CoreFoundation       0x00007fff9e37268c __CFRunLoopRun + 1356
4   com.apple.CoreFoundation       0x00007fff9e371ed8 CFRunLoopRunSpecific + 296
5   com.apple.CoreFoundation       0x00007fff9e3b39b1 CFRunLoopRun + 97
6   com.apple.DebugSymbols         0x00007fffa057869a SpotlightQueryThread(void*) + 346
7   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
8   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
9   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 27:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.LLDB.framework       0x000000011367a139 lldb_private::Condition::Wait(lldb_private::Mutex&, lldb_private::TimeValue const*, bool*) + 109
3   com.apple.LLDB.framework       0x000000011367b7e0 lldb_private::Predicate<bool>::WaitForValueEqualTo(bool, lldb_private::TimeValue const*, bool*) + 96
4   com.apple.LLDB.framework       0x00000001135d664c lldb_private::Listener::WaitForEventsInternal(lldb_private::TimeValue const*, lldb_private::Broadcaster*, lldb_private::ConstString const*, unsigned int, unsigned int, std::__1::shared_ptr<lldb_private::Event>&) + 320
5   com.apple.LLDB.framework       0x00000001135d676b lldb_private::Listener::WaitForEvent(lldb_private::TimeValue const*, std::__1::shared_ptr<lldb_private::Event>&) + 27
6   com.apple.LLDB.framework       0x000000011370e9d2 lldb_private::process_gdb_remote::ProcessGDBRemote::AsyncThread(void*) + 216
7   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
8   libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
9   libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 28:
0   libsystem_kernel.dylib         0x00007fff982a7db6 __psynch_cvwait + 10
1   libsystem_pthread.dylib       0x00007fff92bc5728 _pthread_cond_wait + 767
2   com.apple.LLDB.framework       0x000000011367a139 lldb_private::Condition::Wait(lldb_private::Mutex&, lldb_private::TimeValue const*, bool*) + 109
3   com.apple.LLDB.framework       0x000000011367b7e0 lldb_private::Predicate<bool>::WaitForValueEqualTo(bool, lldb_private::TimeValue const*, bool*) + 96
4   com.apple.LLDB.framework       0x00000001135d664c lldb_private::Listener::WaitForEventsInternal(lldb_private::TimeValue const*, lldb_private::Broadcaster*, lldb_private::ConstString const*, unsigned int, unsigned int, std::__1::shared_ptr<lldb_private::Event>&) + 320
5   com.apple.LLDB.framework       0x00000001135d676b lldb_private::Listener::WaitForEvent(lldb_private::TimeValue const*, std::__1::shared_ptr<lldb_private::Event>&) + 27
6   com.apple.LLDB.framework       0x00000001137ec2d4 lldb_private::Process::WaitForEventsPrivate(lldb_private::TimeValue const*, std::__1::shared_ptr<lldb_private::Event>&, bool) + 116
7   com.apple.LLDB.framework       0x00000001137f328e lldb_private::Process::RunPrivateStateThread(bool) + 284
8   com.apple.LLDB.framework       0x00000001137f2d87 lldb_private::Process::PrivateStateThread(void*) + 19
9   libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
10  libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
11  libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 29 Crashed:: <DBGLLDBSessionThread (pid=12066)>  Dispatch queue: DVTInvalidationPreventionQueue
0   com.apple.LLDB.framework       0x000000011365d9a8 DWARFASTParserSwift::ParseTypeFromDWARF(lldb_private::SymbolContext const&, DWARFDIE const&, lldb_private::Log*, bool*) + 1136
1   com.apple.LLDB.framework       0x0000000113747e68 SymbolFileDWARF::ParseType(lldb_private::SymbolContext const&, DWARFDIE const&, bool*) + 184
2   com.apple.LLDB.framework       0x0000000113742108 SymbolFileDWARF::GetTypeForDIE(DWARFDIE const&, bool) + 368
3   com.apple.LLDB.framework       0x0000000113741b21 SymbolFileDWARF::ResolveType(DWARFDIE const&, bool, bool) + 129
4   com.apple.LLDB.framework       0x000000011373d7b1 SymbolFileDWARF::ResolveTypeUID(DWARFDIE const&, bool) + 373
5   com.apple.LLDB.framework       0x000000011374194c SymbolFileDWARF::ResolveTypeUID(unsigned long long) + 128
6   com.apple.LLDB.framework       0x00000001137cbc78 lldb_private::SymbolFileType::GetType() + 36
7   com.apple.LLDB.framework       0x0000000113635e09 lldb_private::ValueObjectVariable::GetCompilerTypeImpl() + 21
8   com.apple.LLDB.framework       0x00000001136276a1 lldb_private::ValueObject::MaybeCalculateCompleteType() + 39
9   com.apple.LLDB.framework       0x000000011362b914 lldb_private::ValueObject::GetObjectRuntimeLanguage() + 32
10  com.apple.LLDB.framework       0x000000011362bcb7 lldb_private::ValueObject::IsRuntimeSupportValue() + 71
11  com.apple.LLDB.framework       0x00000001116030bb lldb::SBFrame::GetVariables(lldb::SBVariablesOptions const&) + 593
12  com.apple.LLDB.framework       0x0000000111603338 lldb::SBFrame::GetVariables(bool, bool, bool, bool, lldb::DynamicValueType) + 190
13  com.apple.dt.dbg.DebuggerLLDB 0x000000011155eeda -[DBGLLDBStackFrame _getAllFrameVariablesOnLLDBSessionThread] + 104
14  com.apple.dt.dbg.DebuggerLLDB 0x0000000111560486 -[DBGLLDBStackFrame _getLocalsFromLLDBOnSessionThread] + 48
15  com.apple.dt.dbg.DebuggerLLDB 0x0000000111560c9a __27-[DBGLLDBStackFrame locals]_block_invoke + 35
16  com.apple.dt.DVTFoundation     0x0000000106a96fb4 ___DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock_block_invoke_2 + 49
17  libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
18  libdispatch.dylib             0x00007fff9be065a4 _dispatch_sync_f_invoke + 56
19  com.apple.dt.DVTFoundation     0x0000000106a96f54 ___DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock_block_invoke + 150
20  libdispatch.dylib             0x00007fff9bdf540b _dispatch_client_callout + 8
21  libdispatch.dylib             0x00007fff9be065a4 _dispatch_sync_f_invoke + 56
22  com.apple.dt.DVTFoundation     0x0000000106a96da3 _DVTPreventInvalidationForObjectAllowingRecursiveCallsDuringBlock + 383
23  com.apple.dt.DVTFoundation     0x0000000106a9710d _DVTPreventInvalidationAllowingRecursiveCallsDuringBlock + 35
24  com.apple.dt.dbg.DebuggerLLDB 0x000000011155eb80 __45-[DBGLLDBStackFrame _addSessionThreadAction:]_block_invoke + 108
25  com.apple.dt.dbg.DebuggerLLDB 0x0000000111577755 -[DBGLLDBSession handleNextActionWithState:withRunPending:] + 457
26  com.apple.dt.dbg.DebuggerLLDB 0x0000000111571ca5 DBGLLDBSessionThread(void*) + 2089
27  libsystem_pthread.dylib       0x00007fff92bc499d _pthread_body + 131
28  libsystem_pthread.dylib       0x00007fff92bc491a _pthread_start + 168
29  libsystem_pthread.dylib       0x00007fff92bc2351 thread_start + 13


Thread 30:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 31:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 32:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 33:
0   libsystem_kernel.dylib         0x00007fff982a85e2 __workq_kernreturn + 10
1   libsystem_pthread.dylib       0x00007fff92bc4578 _pthread_wqthread + 1283
2   libsystem_pthread.dylib       0x00007fff92bc2341 start_wqthread + 13


Thread 34:


Thread 29 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000000  rbx: 0x0000000000000000  rcx: 0x0000000000000001  rdx: 0x0000000000000007
  rdi: 0x00007fe0452ab380  rsi: 0x0000000113c23a9e  rbp: 0x00007000024e3cf0  rsp: 0x00007000024e3a80
   r8: 0x000000000000002e   r9: 0x0000000000001fff  r10: 0x000000000000000b  r11: 0x00007fdee164b228
  r12: 0x00007000024e4070  r13: 0x0000000000000003  r14: 0x00007fe030b512d0  r15: 0x00007000024e3d80
  rip: 0x000000011365d9a8  rfl: 0x0000000000000206  cr2: 0xffffff81c5e45004

Logical CPU:     0
Error Code:      0x020000b8
Trap Number:     133

This setting was removed in Xcode 7.3.1. You can add it as a user-defined build setting, but for me this didn't fix the crash.

How can i add i a user-defined build setting in 7.3.1

Xcode 7.3 crash at breakpoint
 
 
Q