[Bug libstdc++/98001] ext/stdio_filebuf/char/79820.cc is broken

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98001

--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-8 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:c6145860aac6acfeed2a98fe7532dd2cd0ffab2b

commit r8-10650-gc6145860aac6acfeed2a98fe7532dd2cd0ffab2b
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Nov 26 11:25:55 2020 +0000

    libstdc++: Fix undefined FILE* operations in test

    We only need to check that the constructor doesn't clear errno, so
    there's no need to use an invalid FILE* for that.

    libstdc++-v3/ChangeLog:

            PR libstdc++/98001
            * testsuite/ext/stdio_filebuf/char/79820.cc: Do not pass invalid
            FILE* to constructor.

    (cherry picked from commit 2762cb1df686fc1ebcee23c7c4f0f6e8bf5a6abc)