On 28 Feb 2011, at 3:01 PM, Jerry Krinock wrote:
> Apparently I can get the slides by using the _dyld_xxx_xxx_xxx() functions 
> from mach-o/dyld.h.  I've tested the following and it seems to work.  But 
> since I'm completely out of my league with this stuff I thought I'd throw 
> this code out there in case someone who knows what they're doing sees 
> something that is going to blow up.  In particular, I'm not sure that it is 
> 64-bit clean.

You should ideally use intptr_t (or uintptr_t) in cases where you're storing a 
memory address in a non-pointer variable, like 'slide'. Not critically 
important, since IIRC 'long' will work perfectly well on the architectures that 
OSX currently runs on.

Other than that, the only thing that occurs to me is that it can also be handy 
to include the build UUID of each non-system executable in your backtraces, so 
that you can confidently associate the backtrace with your archived copy of the 
build that generated it. (You can get the info using _dyld_get_image_header() 
and looking for the LC_UUID load command.)


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