[Bug libstdc++/112802] : _ToClosure::operator() has no constraints

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112802

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>:

https://gcc.gnu.org/g:4f54e656788be3268dd45eb036447464a937fae9

commit r14-6668-g4f54e656788be3268dd45eb036447464a937fae9
Author: Patrick Palka <ppa...@redhat.com>
Date:   Mon Dec 18 18:05:36 2023 -0500

    libstdc++: Make ranges::to closure objects SFINAE-friendly [PR112802]

    This also happens to fix composition of these closure objects.

            PR libstdc++/112802
            PR libstdc++/113068

    libstdc++-v3/ChangeLog:

            * include/std/ranges (__detail::_To::operator()): Add constraints.
            (__detail::_To2::operator()): Likewise.
            * testsuite/std/ranges/conv/1.cc (test_sfinae): New test.
            (test_composition): New test.