I've only started using Xcode from this morning, although I have it for a while now. Anyway, for working mostly on C projects I used Netbeans...
To make a long story short, I noticed this morning, right after creating my first project, an OS X C Command Line Application, that when running (CMD + R) my project, Xcode crashes right after building it. It crashes exactly when it's running the project.
It doesn't give any error message, the program just quits. As I am new to Xcode, I have no idea where to find an error log file, I don't even know if there is one. Although if there is one, I would like very much to know where to find it. Searching on google didn't help me at all to locate this file.
First I thought this issue was addressed only to OS X C Command Line Application project. As a result, I tested with several other project types and I've got the same output.
Anyway, I've managed to work around this problem by selecting no debugger for my project in Product -> Scheme -> Edit Scheme -> Run -> Info tab:
However, my projects run now, I still need a debugger, therefore this is not a fix for me.
I have also tried uninstalling and installing back Xcode, but the problem didn't disappear.
Is this a common problem or is it only me? I've seen other people complaining about problems related to mine in previous versions of Xcode, but most have found a valid solution for them that I tried as well but with no luck.
Does anyone know how to fix this issue? I am pretty desperate and the only 'solution' left in my mind is to see if reinstalling the OS will help me, which I would rather not do.
I forgot to mention, I am running the latest version of OS X (10.9.2) on a MacBook Pro Retina 2013 machine. Also, I've got the latest version of Xcode, 5.1 (5B130a).
EDIT
After creating a new user and doing the steps above I managed to get an error message from Xcode:
Process: Xcode [3307]
Path: /Applications/Xcode.app/Contents/MacOS/Xcode
Identifier: com.apple.dt.Xcode
Version: 5.1 (5084)
Build Info: IDEFrameworks-5084000000000000~21
App Item ID: 497799835
App External ID: 444172641
Code Type: X86-64 (Native)
Parent Process: launchd [3106]
Responsible: Xcode [3307]
User ID: 502
Date/Time: 2014-04-10 19:02:19.685 +0300
OS Version: Mac OS X 10.9.2 (13C64)
Report Version: 11
Anonymous UUID: B87A6F4C-ADAC-0A40-43D5-CB68FB46397E
Sleep/Wake UUID: 87996F32-190A-4A5F-8E94-BE0F0E902624
Crashed Thread: 10 Dispatch queue: DBGLLDBLauncher Serial Queue
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Application Specific Information:
ProductBuildVersion: 5B130a
Assertion failed: (out_port != 0), function StartDebugserverProcess, file /SourceCache/lldb/lldb-310.2.36/source/Plugins/Process/gdb-remote/GDBRemoteCommunication.cpp, line 720.
Thread 0:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.HIToolbox 0x00007fff920a4a0d RunCurrentEventLoopInMode + 226
6 com.apple.HIToolbox 0x00007fff920a47b7 ReceiveNextEventCommon + 479
7 com.apple.HIToolbox 0x00007fff920a45bc _BlockUntilNextEventMatchingListInModeWithFilter + 65
8 com.apple.AppKit 0x00007fff8968c3de _DPSNextEvent + 1434
9 com.apple.AppKit 0x00007fff8968ba2b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
10 com.apple.dt.DVTKit 0x000000010b50ae31 -[DVTApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 84
11 com.apple.AppKit 0x00007fff8967fb2c -[NSApplication run] + 553
12 com.apple.AppKit 0x00007fff8966a913 NSApplicationMain + 940
13 libdyld.dylib 0x00007fff9237c5fd start + 1
Thread 1:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 2:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff8937b662 kevent64 + 10
1 libdispatch.dylib 0x00007fff90bd143d _dispatch_mgr_invoke + 239
2 libdispatch.dylib 0x00007fff90bd1152 _dispatch_mgr_thread + 52
Thread 3:: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.Foundation 0x00007fff890cc967 +[NSURLConnection(Loader) _resourceLoadLoop:] + 348
6 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
7 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
8 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
9 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 4:
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.DTDeviceKitBase 0x0000000113d9540e -[DTDKRemoteDeviceDataListener listenerThreadImplementation] + 162
6 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
7 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
8 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
9 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 5:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x00007fff8937a9aa __select + 10
1 com.apple.CoreFoundation 0x00007fff93f73b83 __CFSocketManager + 867
2 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
3 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
4 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 6:
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.AppKit 0x00007fff8982c16e _NSEventThread + 144
6 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
7 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
8 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 7:: DYMobileDeviceManager
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.Foundation 0x00007fff890ceadc -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 253
6 com.apple.Foundation 0x00007fff891b74aa -[NSRunLoop(NSRunLoop) run] + 74
7 com.apple.GPUToolsMobileFoundation 0x0000000117506e0d -[DYMobileDeviceManager _deviceNotificationThread:] + 134
8 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
9 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
10 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
11 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 8:: CVDisplayLink
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.CoreVideo 0x00007fff9005fa38 CVDisplayLink::runIOThread() + 656
3 com.apple.CoreVideo 0x00007fff9005f78f startIOThread(void*) + 147
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 9:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 10 Crashed:: Dispatch queue: DBGLLDBLauncher Serial Queue
0 libsystem_kernel.dylib 0x00007fff8937a866 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff900bb35c pthread_kill + 92
2 libsystem_c.dylib 0x00007fff915d6b1a abort + 125
3 libsystem_c.dylib 0x00007fff915a09bf __assert_rtn + 321
4 com.apple.LLDB.framework 0x0000000119b1c4d2 GDBRemoteCommunication::StartDebugserverProcess(char const*, unsigned short, lldb_private::ProcessLaunchInfo&, unsigned short&) + 1738
5 com.apple.LLDB.framework 0x0000000119b232ba ProcessGDBRemote::LaunchAndConnectToDebugserver(lldb_private::ProcessInfo const&) + 216
6 com.apple.LLDB.framework 0x0000000119b23824 ProcessGDBRemote::DoAttachToProcessWithID(unsigned long long, lldb_private::ProcessAttachInfo const&) + 126
7 com.apple.LLDB.framework 0x0000000119bac94b lldb_private::Process::Attach(lldb_private::ProcessAttachInfo&) + 1541
8 com.apple.LLDB.framework 0x0000000119bf4940 PlatformDarwin::Attach(lldb_private::ProcessAttachInfo&, lldb_private::Debugger&, lldb_private::Target*, lldb_private::Listener&, lldb_private::Error&) + 456
9 com.apple.LLDB.framework 0x0000000119ba2ec7 lldb_private::Platform::DebugProcess(lldb_private::ProcessLaunchInfo&, lldb_private::Debugger&, lldb_private::Target*, lldb_private::Listener&, lldb_private::Error&) + 213
10 com.apple.LLDB.framework 0x0000000119bf4724 PlatformDarwin::DebugProcess(lldb_private::ProcessLaunchInfo&, lldb_private::Debugger&, lldb_private::Target*, lldb_private::Listener&, lldb_private::Error&) + 50
11 com.apple.LLDB.framework 0x0000000119bc5869 lldb_private::Target::Launch(lldb_private::Listener&, lldb_private::ProcessLaunchInfo&) + 483
12 com.apple.LLDB.framework 0x00000001188febb4 lldb::SBTarget::Launch(lldb::SBLaunchInfo&, lldb::SBError&) + 502
13 com.apple.dt.dbg.DebuggerLLDB 0x00000001155ce4d1 -[DBGLLDBLauncher _doRegularDebugWithTarget:usingDebugServer:errTargetString:] + 3242
14 com.apple.dt.dbg.DebuggerLLDB 0x00000001155d01ad __24-[DBGLLDBLauncher start]_block_invoke + 4672
15 libdispatch.dylib 0x00007fff90bd21d7 _dispatch_call_block_and_release + 12
16 libdispatch.dylib 0x00007fff90bcf2ad _dispatch_client_callout + 8
17 libdispatch.dylib 0x00007fff90bd168f _dispatch_queue_drain + 451
18 libdispatch.dylib 0x00007fff90bd29dd _dispatch_queue_invoke + 110
19 libdispatch.dylib 0x00007fff90bd0fa3 _dispatch_root_queue_drain + 75
20 libdispatch.dylib 0x00007fff90bd2193 _dispatch_worker_thread2 + 40
21 libsystem_pthread.dylib 0x00007fff900bbef8 _pthread_wqthread + 314
22 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 11:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc77 _pthread_cond_wait + 787
2 com.apple.Foundation 0x00007fff8909d930 -[NSCondition waitUntilDate:] + 344
3 com.apple.Foundation 0x00007fff890947d8 -[NSConditionLock lockWhenCondition:beforeDate:] + 232
4 com.apple.CSServiceClient 0x000000010da15558 -[CSLogger loggerThread:] + 241
5 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
6 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
7 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
8 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 12:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 13:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 14:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 15:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 16:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 17:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 18:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 19:
0 libsystem_kernel.dylib 0x00007fff8937ae6a __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff900bbf08 _pthread_wqthread + 330
2 libsystem_pthread.dylib 0x00007fff900befb9 start_wqthread + 13
Thread 20:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.Xcode.DevToolsCore 0x000000011295d363 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 524
3 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 21:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.Xcode.DevToolsCore 0x000000011295d363 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 524
3 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 22:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.Xcode.DevToolsCore 0x000000011295d363 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 524
3 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 23:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.Xcode.DevToolsCore 0x000000011295d363 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 524
3 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 24:
0 libsystem_kernel.dylib 0x00007fff8937a716 __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff900bcc3b _pthread_cond_wait + 727
2 com.apple.Xcode.DevToolsCore 0x000000011295d363 -[XCBlockQueue _processBlocksInThreadSlotNumber:] + 524
3 com.apple.Foundation 0x00007fff890cc76b __NSThread__main__ + 1318
4 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
5 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
6 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 25:: <lldb.comm.debugger.input>
0 libsystem_kernel.dylib 0x00007fff8937a9aa __select + 10
1 com.apple.LLDB.framework 0x0000000119a315f0 lldb_private::ConnectionFileDescriptor::BytesAvailable(unsigned int, lldb_private::Error*) + 888
2 com.apple.LLDB.framework 0x0000000119a31052 lldb_private::ConnectionFileDescriptor::Read(void*, unsigned long, unsigned int, lldb::ConnectionStatus&, lldb_private::Error*) + 170
3 com.apple.LLDB.framework 0x0000000119a2f493 lldb_private::Communication::ReadFromConnection(void*, unsigned long, unsigned int, lldb::ConnectionStatus&, lldb_private::Error*) + 97
4 com.apple.LLDB.framework 0x0000000119a2f0f1 lldb_private::Communication::ReadThread(void*) + 147
5 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
6 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
7 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 26:: <lldb.comm.xcode.lldb.comm>
0 libsystem_kernel.dylib 0x00007fff8937a9aa __select + 10
1 com.apple.LLDB.framework 0x0000000119a315f0 lldb_private::ConnectionFileDescriptor::BytesAvailable(unsigned int, lldb_private::Error*) + 888
2 com.apple.LLDB.framework 0x0000000119a31052 lldb_private::ConnectionFileDescriptor::Read(void*, unsigned long, unsigned int, lldb::ConnectionStatus&, lldb_private::Error*) + 170
3 com.apple.LLDB.framework 0x0000000119a2f493 lldb_private::Communication::ReadFromConnection(void*, unsigned long, unsigned int, lldb::ConnectionStatus&, lldb_private::Error*) + 97
4 com.apple.LLDB.framework 0x0000000119a2f0f1 lldb_private::Communication::ReadThread(void*) + 147
5 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
6 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
7 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 27:
0 libsystem_kernel.dylib 0x00007fff89376a1a mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff89375d18 mach_msg + 64
2 com.apple.CoreFoundation 0x00007fff93f28155 __CFRunLoopServiceMachPort + 181
3 com.apple.CoreFoundation 0x00007fff93f27779 __CFRunLoopRun + 1161
4 com.apple.CoreFoundation 0x00007fff93f270b5 CFRunLoopRunSpecific + 309
5 com.apple.CoreFoundation 0x00007fff93fdc811 CFRunLoopRun + 97
6 com.apple.DebugSymbols 0x00007fff94c437e3 SpotlightQueryThread(void*) + 355
7 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
8 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
9 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 28:: listen://localhost:0
0 libsystem_kernel.dylib 0x00007fff8937b64a kevent + 10
1 libsystem_info.dylib 0x00007fff8a813d3b _mdns_search + 1184
2 libsystem_info.dylib 0x00007fff8a81a75c mdns_addrinfo + 513
3 libsystem_info.dylib 0x00007fff8a81a52b search_addrinfo + 183
4 libsystem_info.dylib 0x00007fff8a81a2c0 si_addrinfo + 1468
5 libsystem_info.dylib 0x00007fff8a819c5f getaddrinfo + 171
6 com.apple.LLDB.framework 0x0000000119c4edf0 lldb_private::SocketAddress::getaddrinfo(char const*, char const*, int, int, int, int) + 76
7 com.apple.LLDB.framework 0x0000000119a301dd lldb_private::ConnectionFileDescriptor::SocketListen(char const*, lldb_private::Error*) + 521
8 com.apple.LLDB.framework 0x0000000119a2fc39 lldb_private::ConnectionFileDescriptor::Connect(char const*, lldb_private::Error*) + 149
9 com.apple.LLDB.framework 0x0000000119b1bdd1 GDBRemoteCommunication::ListenThread(void*) + 71
10 libsystem_pthread.dylib 0x00007fff900ba899 _pthread_body + 138
11 libsystem_pthread.dylib 0x00007fff900ba72a _pthread_start + 137
12 libsystem_pthread.dylib 0x00007fff900befc9 thread_start + 13
Thread 10 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x000000011b0c7000 rcx: 0x000000011b0c48b8 rdx: 0x0000000000000000
rdi: 0x0000000000003f5b rsi: 0x0000000000000006 rbp: 0x000000011b0c48e0 rsp: 0x000000011b0c48b8
r8: 0x00007fc91a83ae00 r9: 0x0000000000000227 r10: 0x000000000c000000 r11: 0x0000000000000206
r12: 0x0000000119e6e0f2 r13: 0x0000000119e6e0da r14: 0x0000000000000006 r15: 0x0000000119e6dec0
rip: 0x00007fff8937a866 rfl: 0x0000000000000206 cr2: 0x000000010dc4b000
Logical CPU: 0
Error Code: 0x020000b8
Trap Number: 133
Lava Wong
I had the same issue and fixed it. See https://stackoverflow.com/a/14414016/968427. Check the /etc/hosts file and ensure the host(127.0.0.1 localhost) is exists.
Apparently, this wasn't a common issue, it was only affecting me.
They only way I managed to make Xcode work as supposed was to delete the app and reinstall the whole OS.
UPDATE
The bug appeared again shortly after I installed Xcode again. Therefore, I opted for a full reinstall of the OS (format the hard drive as well).
Nevertheless, after a few weeks the bug appeared again. Anyway, this time I noticed why this is occurring. The reason for that is something related with MAMP PRO MySQL port. Only if I have MAMP PRO MySQL server running, Xcode works.
来源：https://stackoverflow.com/questions/22992029/lldb-makes-xcode-5-1-crash-on-project-run