[Bug driver/81829] [7 Regression] /usr/bin/gcc-{ar,nm,ranlib} segfault without arguments

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81829

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, there are various small issues and I've been testing a patch for
that. The patch will also include unit tests to prevent next issues related.