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Why no execinfo.h?

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Why no execinfo.h?

Subject: Why no execinfo.h?
From: Rush Manbert <email@hidden>
Date: Thu, 20 Apr 2006 12:42:02 -0700

Hi All ,

This is addressed to the Apple Gods of Xcode (AGX) who read this list.

I see that we can use __builtin_return_address() and __builtin_frame_address(), but I would also like to use backtrace() and backtrace_symbols().

When I try, the compiler tells me that it can't find the file execinfo.h. Is there a reason that this (and presumably the functions I want) is excluded from the system?

Alternatively, if I have a return address, is there a runtime lookup mechanism to resolve it to a symbol + offset?

Thanks,
Rush
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