[Bug driver/77576] gcc-ar doesn't work if all options are read from file

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77576

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jeff Law <law@gcc.gnu.org>:

https://gcc.gnu.org/g:c6523ae786e36dccd64589682140e9221628bb5b

commit r14-2884-gc6523ae786e36dccd64589682140e9221628bb5b
Author: Costas Argyris <costas.argyris@gmail.com>
Date:   Mon Jul 31 10:56:20 2023 -0600

    Re: [PATCH] gcc-ar: Handle response files properly [PR77576]

    Problem: gcc-ar fails when a @file is passed to it:

    $ cat rsp
    --version
    $ gcc-ar @rsp
    /usr/bin/ar: invalid option -- '@'

    This is because a dash '-' is prepended to the first
    argument if it doesn't start with one, resulting in
    the wrong call 'ar -@rsp'.

    Fix: Expand argv to get rid of any @files and if any
    expansions were made, pass everything through a
    temporary response file.

    $ gcc-ar @rsp
    GNU ar (GNU Binutils for Debian) 2.35.2
    ...

    gcc/
            PR driver/77576
            * gcc-ar.cc (main): Expand argv and use
            temporary response file to call ar if any
            expansions were made.