Re: crash when resizing window

FROM : Corbin Dunn
DATE : Mon May 12 19:14:51 2008

And/or read this:

http://www.corbinstreehouse.com/blog/index.php/2007/10/instruments-on-leopard-how-to-debug-those-random-crashes-in-your-cocoa-app/

corbin

On May 12, 2008, at 9:20 AM, Mike Abdullah wrote:
> Looks to me like you're releasing (and then deallocating) an object 
> in the outline view without first informing the view that it's gone. 
> It is very important to remember that outline views do NOT retain 
> their items; that is the responsibility of your data source. Running 
> with NSZombieEnabled may help further.
>
> Mike.
>
> On 12 May 2008, at 15:18, Mitchell Livingston wrote:
>

>> Hello,
>>
>> I have code where i manually reorder an outline view, and when it 
>> is reordered it automatically resizes to fit all the items. A crash 
>> consistently happens when I move a subitem from one group to 
>> another (in other words, when I drag a row so that it is originally 
>> in one expandable row and is put in another). I have spent a day 
>> trying to track this down with no luck, and it works fine when I 
>> rearrange rows in their own subgroup (as in they stay under the 
>> same expandable row).
>>
>> Exception Type:  EXC_BAD_ACCESS (SIGBUS)
>> Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000020
>> Crashed Thread:  0
>>
>> Thread 0 Crashed:
>> 0  libobjc.A.dylib                   0x95e806e8 objc_msgSend + 24
>> 1  com.apple.AppKit                 0x9020d58b -[NSOutlineView 
>> _dataSourceIsItemExpandable:] + 125
>> 2  com.apple.AppKit                 0x901b605f -[NSOutlineView 
>> _drawDropHighlight] + 138
>> 3  com.apple.AppKit                 0x901b4f9b -[NSTableView 
>> drawRect:] + 4552
>> 4  com.apple.AppKit                 0x90244bbe -[NSView 
>> _drawRect:clip:] + 3765
>> 5  com.apple.AppKit                 0x90243751 -[NSView 
>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1050
>> 6  com.apple.AppKit                 0x90243aa5 -[NSView 
>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1902
>> 7  com.apple.AppKit                 0x90243aa5 -[NSView 
>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1902
>> 8  com.apple.AppKit                 0x90243aa5 -[NSView 
>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1902
>> 9  com.apple.AppKit                 0x90243aa5 -[NSView 
>> _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1902
>> 10  com.apple.AppKit                 0x902420b4 -[NSView 
>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
>> :] + 759
>> 11  com.apple.AppKit                 0x902419f7 -[NSThemeFrame 
>> _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView
>> :] + 306
>> 12  com.apple.AppKit                 0x9023e52d -[NSView 
>> _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView
>> :] + 3090
>> 13  com.apple.AppKit                 0x9017ef09 -[NSView 
>> displayIfNeeded] + 933
>> 14  com.apple.AppKit                 0x9023162f -[NSWindow 
>> _setFrameCommon:display:stashSize:] + 2031
>> 15  com.apple.AppKit                 0x90230e3a -[NSWindow 
>> setFrame:display:] + 78
>> 16  com.apple.AppKit                 0x902834a5 
>> _NSMoveHelperTimerCallBack + 1330
>> 17  com.apple.CoreFoundation         0x91e24b5e CFRunLoopRunSpecific 
>> + 4494
>> 18  com.apple.CoreFoundation         0x91e24d18 CFRunLoopRunInMode + 88
>> 19  com.apple.AppKit                 0x903dfcdf -[NSMoveHelper 
>> _doAnimation] + 889
>> 20  com.apple.AppKit                 0x9045ec93 -[NSMoveHelper 
>> _resizeWindow:toFrame:display:] + 407
>> 21  com.apple.AppKit                 0x9026bf6c -[NSWindow 
>> setFrame:display:animate:] + 1038
>> 22  org.m0k.transmission             0x00016ef6 -[Controller 
>> setWindowSizeToFit] + 293 (Controller.m:3874)
>> 23  org.m0k.transmission             0x0000cd95 -[Controller 
>> applyFilter:] + 3082 (Controller.m:2041)
>> 24  org.m0k.transmission             0x00010448 -[Controller 
>> outlineView:acceptDrop:item:childIndex:] + 1253 (Controller.m:2696)
>> 25  com.apple.AppKit                 0x90682d90 -[NSOutlineView 
>> performDragOperation:] + 242
>> 26  com.apple.AppKit                 0x9044ff15 NSCoreDragReceiveProc 
>> + 1411
>> 27  com.apple.HIServices             0x909c155c DoDropMessage + 97
>> 28  com.apple.HIServices             0x909c14d2 SendDropMessage + 41
>> 29  com.apple.HIServices             0x909be83a DragInApplication + 492
>> 30  com.apple.HIServices             0x909bd2de CoreDragStartDragging 
>> + 539
>> 31  com.apple.AppKit                 0x9044dd9d -[NSCoreDragManager 
>> _dragUntilMouseUp:accepted:] + 597
>> 32  com.apple.AppKit                 0x9044ccc2 -[NSCoreDragManager 
>> dragImage:fromWindow:at:offset:event:pasteboard:source:slideBack:] 
>> + 1452
>> 33  com.apple.AppKit                 0x9044c70c -[NSWindow(NSDrag) 
>> dragImage:at:offset:event:pasteboard:source:slideBack:] + 127
>> 34  com.apple.AppKit                 0x90682822 -[NSOutlineView 
>> dragImage:at:offset:event:pasteboard:source:slideBack:] + 195
>> 35  com.apple.AppKit                 0x9044c354 -[NSTableView 
>> _doImageDragUsingRowsWithIndexes:event:pasteboard:source:slideBack
>> :] + 762
>> 36  com.apple.AppKit                 0x90294390 -[NSTableView 
>> _performDragFromMouseDown:] + 718
>> 37  com.apple.AppKit                 0x902922ea -[NSTableView 
>> mouseDown:] + 741
>> 38  com.apple.AppKit                 0x902a3edf -[NSOutlineView 
>> mouseDown:] + 611
>> 39  org.m0k.transmission             0x0001e278 -[TorrentTableView 
>> mouseDown:] + 515 (TorrentTableView.m:399)
>> 40  com.apple.AppKit                 0x9024aac3 -[NSWindow 
>> sendEvent:] + 5381
>> 41  com.apple.AppKit                 0x90217714 -[NSApplication 
>> sendEvent:] + 2780
>> 42  com.apple.AppKit                 0x901750f9 -[NSApplication run] 
>> + 847
>> 43  com.apple.AppKit                 0x9014230a NSApplicationMain + 574
>> 44  org.m0k.transmission             0x0000238b main + 181 (main.m:38)
>> 45  org.m0k.transmission             0x000022bb _start + 209
>> 46  org.m0k.transmission             0x000021e9 start + 41
>>
>> If more information is needed, or if you need to see the code, 
>> please let me know.
>>
>> Cheers,
>> Mitch
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