https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90814
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Last reconfirmed|2020-01-28 00:00:00 |2021-8-27 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Reduced testcase down to just this: struct A { A() {} }; struct D : A { int& r; constexpr D() = default; }; That is template does not matter.