title: Terminal.app crashing on Mac OS X after upgrade to 10.12 Sierra
body: <p>After upgrading Mac OS X from El Capitan to Sierra (10.12.2), Terminal.app is frequently crashing, several times per day. I'll be in the middle of typing a command or editing a file and it crashes. Anyone else seeing this issue or know what to do about it (besides switch to iTerm 2)?</p>
  
  <p>(edit) Here is stack trace (omitted the tailing loaded dynamic libraries to keep the length reasonable):</p>
  
  <pre><code>Process:               Terminal [17579]
  Path:                  /Applications/Utilities/Terminal.app/Contents/MacOS/Terminal
  Identifier:            com.apple.Terminal
  Version:               2.7.1 (388)
  Build Info:            Terminal-388000000000000~2
  Code Type:             X86-64 (Native)
  Parent Process:        ??? [1]
  Responsible:           Terminal [17579]
  User ID:               501
  
  Date/Time:             2017-01-25 16:55:07.676 -0800
  OS Version:            Mac OS X 10.12.2 (16C68)
  Report Version:        12
  Anonymous UUID:        XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
  
  Sleep/Wake UUID:       XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX
  
  Time Awake Since Boot: 59000 seconds
  Time Since Wake:       3700 seconds
  
  System Integrity Protection: enabled
  
  Crashed Thread:        0  Dispatch queue: com.apple.main-thread
  
  Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
  Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
  Exception Note:        EXC_CORPSE_NOTIFY
  
  Termination Signal:    Segmentation fault: 11
  Termination Reason:    Namespace SIGNAL, Code 0xb
  Terminating Process:   exc handler [0]
  
  VM Regions Near 0:
  --&gt; 
      __TEXT                 00000001070d8000-00000001071a8000 [  832K] r-x/rwx SM=COW  /Applications/Utilities/Terminal.app/Contents/MacOS/Terminal
  
  Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
  0   libsystem_platform.dylib        0x00007fff9f916f56 _platform_memmove$VARIANT$Haswell + 182
  1   com.apple.Terminal              0x0000000107110c4d 0x1070d8000 + 232525
  2   com.apple.Terminal              0x000000010716ebb8 0x1070d8000 + 617400
  3   com.apple.UIFoundation          0x00007fff9cd20b7f -[NSAttributedString(NSAttributedStringUIFoundationAdditions) doubleClickAtIndex:inRange:] + 337
  4   com.apple.AppKit                0x00007fff882aa90e -[NSAttributedString(NSAttributedStringDeprecatedKitAdditions) URLAtIndex:effectiveRange:] + 607
  5   com.apple.Terminal              0x000000010717c625 0x1070d8000 + 673317
  6   com.apple.Terminal              0x0000000107147f81 0x1070d8000 + 458625
  7   com.apple.Terminal              0x00000001071481e9 0x1070d8000 + 459241
  8   com.apple.Terminal              0x000000010714ec1c 0x1070d8000 + 486428
  9   com.apple.Foundation            0x00007fff8bc42f7f __NSFireTimer + 83
  10  com.apple.CoreFoundation        0x00007fff8a1b7244 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
  11  com.apple.CoreFoundation        0x00007fff8a1b6ecf __CFRunLoopDoTimer + 1071
  12  com.apple.CoreFoundation        0x00007fff8a1b6a2a __CFRunLoopDoTimers + 298
  13  com.apple.CoreFoundation        0x00007fff8a1ae3e1 __CFRunLoopRun + 2065
  14  com.apple.CoreFoundation        0x00007fff8a1ad974 CFRunLoopRunSpecific + 420
  15  com.apple.HIToolbox             0x00007fff89739acc RunCurrentEventLoopInMode + 240
  16  com.apple.HIToolbox             0x00007fff89739901 ReceiveNextEventCommon + 432
  17  com.apple.HIToolbox             0x00007fff89739736 _BlockUntilNextEventMatchingListInModeWithFilter + 71
  18  com.apple.AppKit                0x00007fff87cdfae4 _DPSNextEvent + 1120
  19  com.apple.AppKit                0x00007fff8845a21f -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2789
  20  com.apple.AppKit                0x00007fff87cd4465 -[NSApplication run] + 926
  21  com.apple.AppKit                0x00007fff87c9ed80 NSApplicationMain + 1237
  22  libdyld.dylib                   0x00007fff9f706255 start + 1
  
  Thread 1:: com.apple.terminal.low-disk-space-handler
  0   libsystem_kernel.dylib          0x00007fff9f835e2a kevent + 10
  1   com.apple.Terminal              0x00000001070da3df 0x1070d8000 + 9183
  2   com.apple.Foundation            0x00007fff8bbd2c6d __NSThread__start__ + 1243
  3   libsystem_pthread.dylib         0x00007fff9f91daab _pthread_body + 180
  4   libsystem_pthread.dylib         0x00007fff9f91d9f7 _pthread_start + 286
  5   libsystem_pthread.dylib         0x00007fff9f91d1fd thread_start + 13
  
  Thread 2:: com.apple.terminal.sigchld-handler
  0   libsystem_kernel.dylib          0x00007fff9f8362da read + 10
  1   com.apple.Terminal              0x00000001070e4e03 0x1070d8000 + 52739
  2   com.apple.Foundation            0x00007fff8bbd2c6d __NSThread__start__ + 1243
  3   libsystem_pthread.dylib         0x00007fff9f91daab _pthread_body + 180
  4   libsystem_pthread.dylib         0x00007fff9f91d9f7 _pthread_start + 286
  5   libsystem_pthread.dylib         0x00007fff9f91d1fd thread_start + 13
  
  Thread 3:: com.apple.terminal.tty-io
  0   libsystem_kernel.dylib          0x00007fff9f834f4a __select + 10
  1   com.apple.Terminal              0x00000001070e661b 0x1070d8000 + 58907
  2   com.apple.Foundation            0x00007fff8bbd2c6d __NSThread__start__ + 1243
  3   libsystem_pthread.dylib         0x00007fff9f91daab _pthread_body + 180
  4   libsystem_pthread.dylib         0x00007fff9f91d9f7 _pthread_start + 286
  5   libsystem_pthread.dylib         0x00007fff9f91d1fd thread_start + 13
  
  Thread 4:: com.apple.NSEventThread
  0   libsystem_kernel.dylib          0x00007fff9f82d38a mach_msg_trap + 10
  1   libsystem_kernel.dylib          0x00007fff9f82c7d7 mach_msg + 55
  2   com.apple.CoreFoundation        0x00007fff8a1aec94 __CFRunLoopServiceMachPort + 212
  3   com.apple.CoreFoundation        0x00007fff8a1ae121 __CFRunLoopRun + 1361
  4   com.apple.CoreFoundation        0x00007fff8a1ad974 CFRunLoopRunSpecific + 420
  5   com.apple.AppKit                0x00007fff87e2cf92 _NSEventThread + 205
  6   libsystem_pthread.dylib         0x00007fff9f91daab _pthread_body + 180
  7   libsystem_pthread.dylib         0x00007fff9f91d9f7 _pthread_start + 286
  8   libsystem_pthread.dylib         0x00007fff9f91d1fd thread_start + 13
  
  Thread 5:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 6:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 7:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 8:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 9:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 10:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 11:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d5fe _pthread_wqthread + 1023
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 12:
  0   libsystem_kernel.dylib          0x00007fff9f8354e2 __workq_kernreturn + 10
  1   libsystem_pthread.dylib         0x00007fff9f91d791 _pthread_wqthread + 1426
  2   libsystem_pthread.dylib         0x00007fff9f91d1ed start_wqthread + 13
  
  Thread 0 crashed with X86 Thread State (64-bit):
    rax: 0x00007fff58b24f0e  rbx: 0x0000610000672f80  rcx: 0x0000000000005ff2  rdx: 0x0000000000000002
    rdi: 0x00007fff58b24f0e  rsi: 0x0000000000000000  rbp: 0x00007fff58b24e70  rsp: 0x00007fff58b24e70
     r8: 0x0000000000000000   r9: 0x00007fff58b24e5c  r10: 0x00007f996715ca76  r11: 0x00007fff58b24f0e
    r12: 0x0000000000000018  r13: 0x0000000000000010  r14: 0x000000000000f136  r15: 0x000000000003e07d
    rip: 0x00007fff9f916f56  rfl: 0x0000000000010246  cr2: 0x0000000000000000
  
  Logical CPU:     6
  Error Code:      0x00000004
  Trap Number:     14
  </code></pre>