(gdb) thread apply all bt

Thread 10 (Thread 0x1b03 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x1a03 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x1903 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x1803 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)


Thread 6 (Thread 0x1703 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x1603 of process 74723):
#0  0x00007fff983eade6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d0e4a in ?? () from /usr/lib/system/libsystem_pthread.dylib
#2  0x0b0626010b062600 in ?? ()
Backtrace stopped: Cannot access memory at address 0x117f50

Thread 4 (Thread 0x1503 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x1403 of process 74723):
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#0  0x0000000000000000 in ?? ()
Backtrace stopped: Cannot access memory at address 0x0
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)


Thread 2 (Thread 0x1303 of process 74723):
#0  0x00007fff983ebefa in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8dde5165 in _dispatch_mgr_invoke () from /usr/lib/system/libdispatch.dylib
#2  0x00007fff8dde4dcd in _dispatch_mgr_thread () from /usr/lib/system/libdispatch.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#3  0x0000000000000000 in ?? ()
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)


Thread 1 (Thread 0x1203 of process 74723):
#0  0x00007fff983eadb6 in ?? () from /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
#1  0x00007fff8b5d1728 in ?? () from /usr/lib/system/libsystem_pthread.dylib
warning: (Internal error: pc 0x0 in read in psymtab, but not in symtab.)

#2  0x0000000000000000 in ?? ()