[Bug libstdc++/89728] ctype is underconstrained

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89728

--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>:

https://gcc.gnu.org/g:fd89fc77639a63a141dbbc6292dd73e653794d61

commit r12-844-gfd89fc77639a63a141dbbc6292dd73e653794d61
Author: Antony Polukhin <antosh...@gmail.com>
Date:   Mon May 17 14:58:28 2021 +0100

    libstdc++: diagnose some misuses of [locale.convenience] functions [PR
89728]

    This patch provides better diagnostics for common misuse of
    [locale.convenience] functions with std::string as a character type.

    libstdc++-v3/ChangeLog:

            PR libstdc++/89728
            * include/bits/locale_facets.h (ctype<basic_string<C,T,A>>):
            Declare (but do not define) partial specialization.
            * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test.