Re: Crash in [NSApplication sendAction:to:from:]

FROM : Michael Babin
DATE : Sat Jul 22 20:37:16 2006

On Jul 21, 2006, at 6:44 PM, Trygve Inda wrote:

> 0  libobjc.A.dylib  0x90a4e387 objc_msgSend + 23
> 1  com.apple.AppKit 0x934881ac -[NSApplication 
> sendAction:to:from:] + 107
> 2  com.apple.AppKit 0x93535eff -[NSMenu 
> performActionForItemAtIndex:] + 455
> 3  com.apple.AppKit 0x93535c41 -[NSCarbonMenuImpl
> performActionWithHighlightingForItemAtIndex:] + 103
> 4  com.apple.AppKit 0x93535898 -[NSMenu performKeyEquivalent:] + 766
> 5  com.apple.AppKit 0x93535339 -[NSApplication 
> _handleKeyEquivalent:] + 381
> 6  com.apple.AppKit 0x93469267 -[NSApplication sendEvent:] + 3542
> 7  com.apple.AppKit 0x93394426 -[NSApplication run] + 547
>
> This happens about 20% of the time when clicking a button (our 
> using the
> equivalent menu item) with an action of:
>
> - (IBAction)unload:(id)sender
> {
>    if (movie != nil)
>    {
>        if ([movie rate] != 0)
>            [movie stop];
>
>        if (movieIdle != nil)
>        {
>            [movieIdle invalidate];
>            [movieIdle release];
>        }
>
>        [movie release];
>        [self setValue:nil forKey:@"movie"];
>    }
> }


Since the unload: method does not appear on the stack, it would seem 
that the crash is occurring before this code is executed. What object 
is the button action message sent to? Is it possible this object is 
invalid/released?

--
Michael Babin                          <email_removed>
Order N Development, LLC      http://www.orderndev.com/
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