How to find instance by hex in XCode console?

iphone xcode nsexception
marty picture marty · Aug 4, 2010 · Viewed 7k times · Source

When I bring up console after my iPhone app crashes, it often says "unrecognized selector sent to instance 0x blah blah blah." How can I find out what variable this is? Is there a way in the debugger? Is it even possible? Thanks.

Answer

kennytm picture kennytm · Aug 4, 2010

In gdb you could type

po 0x12345678

to print the -description of the object at that address. But this info is seldom useful. You should instead check the backtrace of the exception first, which can locate the line of code that causes the problem.

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