[Bug libstdc++/101411] missing constraint in std::as_writable_bytes

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101411

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jonathan Wakely
<r...@gcc.gnu.org>:

https://gcc.gnu.org/g:df115674b39d4004252b7d5e41d9751f2b77b0d8

commit r11-8739-gdf115674b39d4004252b7d5e41d9751f2b77b0d8
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Mon Jul 12 16:09:34 2021 +0100

    libstdc++: Constrain std::as_writable_bytes [PR101411]

    The std::as_writable_bytes function should be constrained to only accept
    writable spans. Currently it can be called but then gives an error in
    the function body.

    Signed-off-by: Jonathan Wakely <jwak...@redhat.com>

    libstdc++-v3/ChangeLog:

            PR libstdc++/101411
            * include/std/span (as_writable_bytes): Add requires-clause.
            * testsuite/23_containers/span/101411.cc: New test.

    (cherry picked from commit 9d4393af9d2b37b78eb5b1f84f5d4da3a6f7fba6)