https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80762
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Wed Dec 12 16:13:43 2018 New Revision: 267056 URL: https://gcc.gnu.org/viewcvs?rev=267056&root=gcc&view=rev Log: PR libstdc++/80762 avoid ambiguous __constructible_from<void, void> Ensure we don't try to instantiate __is_constructible_from<void, void>, because there are two partial specializations that are equally good matches. PR libstdc++/80762 * include/bits/fs_path.h (path::_Path): Use remove_cv_t and is_void. * include/experimental/bits/fs_path.h (path::_Path): Likewise. * testsuite/27_io/filesystem/path/construct/80762.cc: New test. * testsuite/experimental/filesystem/path/construct/80762.cc: New test. Added: trunk/libstdc++-v3/testsuite/27_io/filesystem/path/construct/80762.cc trunk/libstdc++-v3/testsuite/experimental/filesystem/path/construct/80762.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/fs_path.h trunk/libstdc++-v3/include/experimental/bits/fs_path.h
