https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87935
--- Comment #1 from Christophe Lyon <clyon at gcc dot gnu.org> --- It also causes: FAIL: g++.dg/cpp0x/pr83734.C -std=gnu++14 (internal compiler error) FAIL: g++.dg/cpp0x/pr83734.C -std=gnu++17 (internal compiler error)