https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111138
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tomasz Kaminski <tkami...@gcc.gnu.org>: https://gcc.gnu.org/g:5abe571e0276fafcc6eed27c27abb28943e67c6f commit r15-8057-g5abe571e0276fafcc6eed27c27abb28943e67c6f Author: Tomasz KamiÅski <tkami...@redhat.com> Date: Fri Mar 7 11:54:38 2025 +0100 libstdc++: Fix views::zip_transform constraints for empty range pack [PR111138] Add missing move_constructible && regular_invocable constrains on functor type, and is_object on functor result type for invocations of views::zip_transform without range arguments. PR libstdc++/111138 libstdc++-v3/ChangeLog: * include/std/ranges (_ZipTransform::operator()): Create separate overload for calls with empty range pack, and add move_constructible, regular_invocable and is_object_v<invoke_result_t<...>>> constraints. * testsuite/std/ranges/zip_transform/1.cc: New tests Reviewed-by: Patrick Palka <ppa...@redhat.com> Jonathan Wakely <jwak...@redhat.com> Signed-off-by: Tomasz KamiÅski <tkami...@redhat.com>
