[Bug libstdc++/71960] __glibcxx_assert and Debug Mode checks can't be used in constexpr functions

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71960

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jonathan Wakely
<r...@gcc.gnu.org>:

https://gcc.gnu.org/g:85847fd421d7760f45f0e69c7ae3607f2f898bb8

commit r10-8676-g85847fd421d7760f45f0e69c7ae3607f2f898bb8
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Aug 26 14:47:51 2020 +0100

    libstdc++: Enable assertions in constexpr string_view members [PR 71960]

    Since GCC 6.1 there is no reason we can't just use __glibcxx_assert in
    constexpr functions in string_view. As long as the condition is true,
    there will be no call to std::__replacement_assert that would make the
    function ineligible for constant evaluation.

            PR libstdc++/71960
            * include/experimental/string_view (basic_string_view):
            Enable debug assertions.
            * include/std/string_view (basic_string_view):
            Likewise.

    (cherry picked from commit 3eefb302d2bd8502cb3d8fe44e672b11092ccaf6)