On Mar 27, 2010, at 7:00 AM, Ken Thomases wrote: > On Mar 27, 2010, at 6:29 AM, Arun wrote: > >> My application is crashing sometimes with the following crash log. It has no >> traces of my code. Can anyone look into the crash log suggest some ideas? > > Probably a memory management bug. You are over-releasing or under-retaining > something. An NSImage, from the looks of things. > > http://www.sealiesoftware.com/blog/archive/2008/09/22/objc_explain_So_you_crashed_in_objc_msgSend.html
And beyond the advice at the link, I should have said to use the Zombie instrument or, the manual way, set NSZombieEnabled=YES and MallocStackLoggingNoCompact=YES, set a breakpoint in -[_NSZombie methodSignatureForSelector:], then when the debugger stops on that breakpoint, use "info malloc-history" command to figure out where the zombie was originally allocated. http://www.friday.com/bbum/2010/01/10/using-malloc-to-debug-memory-misuse-in-cocoa/ http://developer.apple.com/mac/library/technotes/tn2004/tn2124.html Also, use Xcode's Build and Analyze feature to see if the static analyzer can identify your memory management bugs. Cheers, Ken _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
