| // PR c++/92414 | |
| // { dg-do compile { target c++20 } } | |
| struct A { virtual void foo (); }; | |
| struct B : A { | |
| constexpr B (int); // { dg-warning "used but never defined" } | |
| constexpr ~B () { } | |
| }; | |
| struct D : B { | |
| constexpr D () : B (42) { } // { dg-error "used before its definition" } | |
| }; | |
| constexpr D d; // { dg-message "in 'constexpr' expansion of" } |