https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128243
--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Andrei Poshtarenko from comment #0) > gcc 7.5 can compile that code, but 8.1 can't. Are you sure about that? It compiles with 9.5 for me, but not 10.1
