| // { dg-do compile { target c++11 } } | |
| struct A; | |
| struct B | |
| { | |
| constexpr A & operator= (const A &); // { dg-warning "used" "" { target c++14 } } | |
| }; | |
| struct A : B // { dg-error "cannot be overloaded" "" { target c++14 } } | |
| { | |
| using B::operator=; | |
| } a { a = a }; |