https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89571
--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> --- I must also add: if we had decided to fix c++/89488 the way I originally proposed https://gcc.gnu.org/ml/gcc-patches/2019-02/txtzrb81mYdom.txt we would not have to fix this one too ;)