glibc-2.20 seteuid()/setegid() : Function not implemented

[Florian Weimer]

* Petr Silhavy:

> after I installed glibc-2.20 as my primary libc, I got error messages 
> from all utilities calling seteuid/setegid e.g. :
>
> # xterm &
> xterm: setegid(0): Function not implemented
> xterm: seteuid(0): Function not implemented
> xterm: seteuid(0): Function not implemented
> xterm: setegid(0): Function not implemented

What's your GCC version?  There's a known (and fixed) GCC bug which
can trigger something like this:
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61801>