Re: [Libunwind-devel] libunwind on x86 (32-bit) not using unwind info?

[Ralph Loader]

> >
> > 2. unwinding with -fomit-frame-pointer doesn't work and often
> > segfaults.
> >
> 
> Which version of libunwind are you testing?

I first noticed problems with whatever Fedora rawhide has.  So I
built 0.99-alpha myself and still have the same problems.

Attached is a test-case.  If you build it with -fomit-frame-pointer,
and run, it crashes inside libunwind almost immediately.

If you build it without -fomit-frame-pointer, then it doesn't crash,
but something is still going wrong with the unwinding; you hit
dwarf_find_proc_info with some wierd addresses:

IP=0xbfb3c5a3 not found
IP=0xbfb3c5d3 not found
IP=0xbfb3c5af not found
IP=0xbfb3c5bb not found
IP=0xbfb3c5d3 not found
IP=0xbfb3c5eb not found
IP=0xbfb3c5bb not found

That's somewhere above the stack and definately not a real IP...

Ralph.

unwind-test.c
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