[Bug libstdc++/113241] [13/14 Regression] Unguarded use of __is_convertible built-in

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113241

--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
<r...@gcc.gnu.org>:

https://gcc.gnu.org/g:4c66513656775d551db36b53c253cf236f0eeba8

commit r13-8194-g4c66513656775d551db36b53c253cf236f0eeba8
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Fri Jan 5 12:03:22 2024 +0000

    libstdc++: Do not use __is_convertible unconditionally [PR113241]

    The new __is_convertible built-in should only be used after checking
    that it's supported.

    libstdc++-v3/ChangeLog:

            PR libstdc++/113241
            * include/std/type_traits (is_convertible_v): Guard use of
            built-in with preprocessor check.

    (cherry picked from commit 57fa5b60bbbf8038b8a699d2bcebd2a9b2e29aa4)