| // PR c++/93414 - poor diagnostic for dynamic_cast in constexpr context. |
| // { dg-do compile { target c++20 } } |
| // Here 'b' doesn't point/refer to a public base of Derived. |
| |
| struct Base { |
| constexpr virtual ~Base(){} |
| }; |
| |
| struct Derived: Base { |
| constexpr ~Derived(){} |
| }; |
| |
| constexpr const Derived& cast(const Base& b) { |
| return dynamic_cast<const Derived&>(b); // { dg-error "reference .dynamic_cast. failed" } |
| // { dg-message "dynamic type .const Base. of its operand does not have a base class of type .Derived." "" { target *-*-* } .-1 } |
| } |
| |
| auto test() { |
| static constexpr Base b; |
| constexpr auto res = cast(b); |
| return res; |
| } |
