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Re: NSOutlineView crash?

On Friday, Nov 29, 2002, at 08:27AM, Alex Rice <email@hidden> wrote:

>I occasionally get this crash with the stack trace apparently deep
>within the guts of NSOutlineView. I can't make it occur it repeatably,
>and it's kinda got me wondering if it's something in my code, or in
>NSOutlineView. It occurs when I collapse an item with several children.
>
>Exception: EXC_BAD_ACCESS (0x0001)
>Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x00000009
>
>Thread 0 Crashed:
> #0 0x9013236c in CFRetain
> #1 0x901424ac in CFDictionaryAddValue
> #2 0x90141720 in CFDictionaryCreate
> #3 0x907f1bec in -[NSPlaceholderDictionary
>initWithObjects:forKeys:count:]
> #4 0x907f74ec in +[NSDictionary dictionaryWithObjectsAndKeys:]
> #5 0x9323db84 in -[NSOutlineView _postItemDidCollapseNotification:]

The crash happens whilst the outline view is assembling the dictionary for
the itemDidCollapseNotification so to me that would indicate a data source
problem. Perhaps the item you are collapsing has been autoreleased between
being supplied from the OutlineView's data source and when you click on
its disclosure triangle?

--
Julian Barkway,
Zurich,
Switzerland.
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