tests failing on x86_64-linux

[Florian Weimer]

* Martin Sebor:

> It's been a while since I built Glibc with the system compiler
> so I must have misremembered the results.  Here they are for
> my Fedora 29 machine (with libstdc++-static installed and with
> --prefix=/usr):
>
> gcc version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)

Please try installing gcc-c++ and libstdc++-static.  Does it help?

Thanks,
Florian
-- 
Red Hat GmbH, https://de.redhat.com/ , Registered seat: Grasbrunn,
Commercial register: Amtsgericht Muenchen, HRB 153243,
Managing Directors: Charles Cachera, Brian Klemm, Laurie Krebs, Michael O'Neill