Re: crash when calling __builtin_return_address

[Paul Pluzhnikov]

Ulrich Lauther <ulrich.lauther@siemens.com> writes:

> : If it's your own memory manager, just pass the info (e.g. file,
> : line) into the allocation routine(s).
>
> that simple solution doesn't help: it would indicate the source line in my
> memory manager (always the same),

Why? There is an entry point into your memory manager. 
Pass file/line info to *it*.

> : Alternatively, compile with '-O2 -fno-omit-frame-pointer'
>
> I'll try that. Hopefully it can be done just for the part of the program
> involved.

To be able to unwind through your memory manager, all of its routines
must have a frame.

> If one would write a procedure in assembler, would that have easy access to
> the PC?

Which PC? The immediate caller is already accessible via
__builtin_return_address(0). All other PCs must be deduced using
unwind descriptors, so writing this in assembly doesn't gain you
anything.

Cheers,
-- 
In order to understand recursion you must first understand recursion.
Remove /-nsp/ for email.