[Bug dynamic-link/21041] Fix for bug 20019 causes linker errors for shared libraries using longjmp

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

https://sourceware.org/bugzilla/show_bug.cgi?id=21041

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|https://sourceware.org/bugz |https://sourceware.org/bugz
                   |illa/show_bug.cgi?id=20489  |illa/show_bug.cgi?id=20019

--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Phil Blundell from comment #2)
> (In reply to Florian Weimer from comment #1)
> > The bug is here:
> > 
> > $ ld.gold -shared  -z now -o libbar.so bar.o
> > 
> > You must link against the relevant glibc DSOs if you use symbols from glibc,
> > otherwise the resulting shared object is undefined.
> 
> Sorry, that was a poor testcase.  However, linking -lc at this point doesn't
> make any difference.

And linking with gcc (without specifying -lc) also reproduces this issue.

> Linking -lpthread does, but the point is that libbar
> doesn't use any symbols from libpthread itself and has no reason to link
> with that library.

This is actually a very nice test case, thanks.

The “fix” for bug 20019 is clearly bogus and needs to be reverted.

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