Objective C -- how to find where error occurs

I am receiving a message from GDB as follows on the console:

2011-03-06 12:31:01.303 myProgram[3830:207] *** __NSAutoreleaseFreedObject(): release of previously deallocated object (0x61472a0) ignored

How do I find which line in the program (which I as开发者_JS百科sume is referenced by [3830:207] was attempting the release?

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Run the Allocations Instrument against your app.

In particular, "flip " the allocations instrument over and turn on zombie detection & track retain/release events.

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Generally, it depends on where you are in your execution. If you can figure out what class is responsible, it'll be easier to pinpoint the error. The 207 is referencing a line number; I can't find a reference to the 3830 in the GDB reference.

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Maybe this quick GDB tutorial will help:

http://www.eosgarden.com/en/articles/gdb-tutorial/