[Bug libc/13097] gdb regression: Excessive linux-vdso.so.1 name

["carlos at redhat dot com" <sourceware-bugzilla at sourceware dot org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=13097

Carlos O'Donell <carlos at redhat dot com> changed:

           What    |Removed                     |Added
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             Status|REOPENED                    |WAITING
                 CC|                            |carlos at redhat dot com

--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Samuel Bronson from comment #4)
> This is still an issue; how could listing a library under a valid but
> non-existent filename not confuse tools?

We aren't likely to get to work on this any time soon. We don't have enough
resources.

The code in question is now in elf/setup-vdso.h, and I would be more than happy
to review a patch that fixes this bug.

You'd need to run the testsuite on master to make sure you don't introduce any
regressions and then show that LD_DEBUG=all still works, and that the debugger
which was previously reporting bogus warnings doesn't report any more bogus
warnings.

The best possible patch avoids this hack:
+             if (GLRO(dl_debug_mask))
+               l->l_name = copy;

and instead adjusts the debug code to inform the user that this DSO has no
associated file e.g. a virtual dso.

Notes:
http://sourceware.org/glibc/wiki/Contribution%20checklist

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