Interpreting GDB Stack Frames

Subject: Interpreting GDB Stack Frames
From: "Ayers, Joseph" <email@hidden>
Date: Sun, 01 Jan 2012 10:26:07 -0500
Acceptlanguage: en-US
Thread-topic: Interpreting GDB Stack Frames

I have a program crashing loading a NIB that isn't explicitly specified. The call frame is below From the call frame it looks like it's called in line 8. How do I reveal the name of the nib file?

Thanks,

Joseph Ayers

2012-01-01 09:16:30.648 Roboplasm[36368:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Cannot create NSArray from object <NSManagedObjectContext: 0x10192d020> of class NSManagedObjectContext'

*** First throw call stack:

(

0 CoreFoundation 0x00007fff8c551286 __exceptionPreprocess + 198

1 libobjc.A.dylib 0x00007fff8a88dd5e objc_exception_throw + 43

2 CoreFoundation 0x00007fff8c5510ba +[NSException raise:format:arguments:] + 106

3 AppKit 0x00007fff86982490 _NSValueOfClassWithSpecialSpecificErrorMessage + 245

4 AppKit 0x00007fff8698206c -[NSArrayDetailBinder _refreshDetailContentInBackground:] + 691

5 AppKit 0x00007fff86718a0f -[NSObject(NSKeyValueBindingCreation) bind:toObject:withKeyPath:options:] + 591

6 AppKit 0x00007fff86711d25 -[NSIBObjectData nibInstantiateWithOwner:topLevelObjects:] + 1079

7 AppKit 0x00007fff8670833b loadNib + 322

8 AppKit 0x00007fff86707834 +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 217

9 AppKit 0x00007fff8670774f +[NSBundle(NSNibLoading) loadNibFile:externalNameTable:withZone:] + 141

10 AppKit 0x00007fff868f6134 -[NSWindowController loadWindow] + 221

11 AppKit 0x00007fff868f5eef -[NSWindowController window] + 75

12 AppKit 0x00007fff868f5d5d -[NSWindowController showWindow:] + 40

13 Roboplasm 0x00000001000178bc -[RoboplasmAppDelegate showMediaWindow:] + 92

14 Roboplasm 0x0000000100017046 -[RoboplasmAppDelegate awakeFromNib] + 166

15 CoreFoundation 0x00007fff8c5482e1 -[NSObject performSelector:] + 49

16 CoreFoundation 0x00007fff8c548262 -[NSSet makeObjectsPerformSelector:] + 274

17 AppKit 0x00007fff86711dcb -[NSIBObjectData nibInstantiateWithOwner:topLevelObjects:] + 1245

18 AppKit 0x00007fff8670833b loadNib + 322

19 AppKit 0x00007fff86707834 +[NSBundle(NSNibLoading) _loadNibFile:nameTable:withZone:ownerBundle:] + 217

20 AppKit 0x00007fff8670774f +[NSBundle(NSNibLoading) loadNibFile:externalNameTable:withZone:] + 141

21 AppKit 0x00007fff86707692 +[NSBundle(NSNibLoading) loadNibNamed:owner:] + 364

22 AppKit 0x00007fff8697a8eb NSApplicationMain + 398

23 Roboplasm 0x0000000100009772 main + 34

24 Roboplasm 0x00000001000018c4 start + 52

)

terminate called throwing an exception(gdb) info args f 8

self = (RoboplasmAppDelegate *) 0x101a0a430

_cmd = (SEL) 0x10007400d

sender = (id) 0x101a0a430

(gdb) info locals f8

No locals.

(gdb) info f 8

Stack frame at 0x7fff5fbfde80:

rip = 0x7fff8c1b2152 in __gxx_exception_cleanup(_Unwind_Reason_Code, _Unwind_Exception*); saved rip 0x7fff8a88de7a

called by frame at 0x7fff5fbfee50, caller of frame at 0x7fff5fbfde60

Arglist at 0x7fff5fbfde78, args:

Locals at 0x7fff5fbfde78, Previous frame's sp is 0x7fff5fbfde80

Saved registers:

rbx at 0x7fff5fbfde68, rbp at 0x7fff5fbfde70, rip at 0x7fff5fbfde78

(gdb)

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