How can I track down a segmentation fault in a Cocoa application?

Question

I'm having a problem with a Cocoa application I am writing. It has to parse a timestamped file that is updated every hour, and during testing it keeps crashing consistently at around 11:45 PM due to a segmentation fault. I'm assuming I must be messaging an object that has been deallocated. What tools are provided with the Xcode install to track object allocations and (hopefully) tell me if I am messaging an object that has been deallocated?

I am using Mac OS X 10.5.

Answer 1

I would recommend the following:

• Use NSZombieEnabled to monitor when messages are sent to deallocated NSObjects
• Use Instruments to track object allocations and/or memory leaks