Crash at THFSPlusStore::LessThan(HFSUniStr255 const&)

FROM : Daniel Cote
DATE : Tue Feb 12 20:28:56 2008

Hello:

I have a microscopy program that displays and acquire images, and 
saves processed images. I keep getting crashes in my program in a 
function that is called from [ NSSavePanel 
runModalForDirectory:file:types ]
The program crashes very often (every 20 calls roughly) at 
THFSPlusStore::LessThan(HFSUniStr255 const&). I have tried many things 
(including passing empty strings or nil strings for all parameters to 
runModalForDirectory:file:types etc...) and I can't see what is wrong. 
I may have some corrupted memory somewhere because of another thread 
(?), but I can't come up with a good strategy to find it. In another 
issue, I often get the message "CGImageSourceCreateWithData data 
parameter is nil" in my logs but I have been absolutely unable to 
track down what Cocoa function calls that function.

Any help would be greatly appreciated.

Daniel

Exception:  EXC_BAD_ACCESS (0x0001)
Codes:      KERN_INVALID_ADDRESS (0x0001) at 0x20536f72

Thread 0 Crashed:
0  com.apple.DesktopServices         0x92afc500 
THFSPlusStore::LessThan(HFSUniStr255 const&) const + 72
1  com.apple.DesktopServices         0x92af93cc 
TChildrenList::Find(HFSUniStr255 const&) + 136
2  com.apple.DesktopServices         0x92af9190 
TNode::FindChild(HFSUniStr255 const&) const + 184
3  com.apple.DesktopServices         0x92af8ff4 
TNode::GetNodeFromPathName(TPathName const&, TNodePtr&) const + 220
4  com.apple.DesktopServices         0x92af8554 
TNode::GetNodeFromURL(__CFURL const* const&, TNodePtr&) + 184
5  com.apple.DesktopServices         0x92afaf38 GetURLAsNode + 68
6  com.apple.AppKit                   0x9393938c NSFBEAllocNodeFromPath 
+ 104
7  com.apple.AppKit                   0x93939050 -[NSNavFBENode 
initWithPath:logonOK:] + 60
8  com.apple.AppKit                   0x93938d70 -
[NSSavePanel(NSSavePanelRuntime) _configureForDirectory:name:] + 404
9  com.apple.AppKit                   0x93938a58 -
[NSSavePanel(NSSavePanelRuntime) runModalForDirectory:file:types:] + 56
10  com.wellman.dccote.iphoton         0x00016038 -[AppController 
saveWithCurrentUserSettings:] + 448
11  com.apple.Foundation               0x92beda0c 
__NSFireMainThreadPerform + 276
12  com.apple.CoreFoundation           0x9080eae0 
__CFRunLoopPerformPerform + 104
13  com.apple.CoreFoundation           0x907de4fc __CFRunLoopDoSources0 + 
384
14  com.apple.CoreFoundation           0x907dda2c __CFRunLoopRun + 452
15  com.apple.CoreFoundation           0x907dd4ac CFRunLoopRunSpecific + 
268
16  com.apple.HIToolbox               0x93297b20 
RunCurrentEventLoopInMode + 264
17  com.apple.HIToolbox               0x932971b4 ReceiveNextEventCommon 
+ 380
18  com.apple.HIToolbox               0x93297020 
BlockUntilNextEventMatchingListInMode + 96
19  com.apple.AppKit                   0x9379cae4 _DPSNextEvent + 384
20  com.apple.AppKit                   0x9379c7a8 -[NSApplication 
nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
21  com.apple.AppKit                   0x93798cec -[NSApplication run] + 
472
22  com.apple.AppKit                   0x9388987c NSApplicationMain + 452
23  com.wellman.dccote.iphoton         0x00002b78 _start + 760
24  com.wellman.dccote.iphoton         0x0000287c start + 48


---------------------
Daniel Côté, Ph.D.
Assistant Professor/Professeur Adjoint
Departement de Physique
Centre de Recherche Université Laval Robert Giffard
2601 Ch. de la Canardiere, F-6500
Québec QC G1J2G3
Canada

Daniel.<email_removed>
Office (418) 663-5747  x6875
Cell (418) 559-4620