| // Test that a non-template deduction guide that doesn't match the alias is |
| // ignored. |
| // { dg-do compile { target c++20 } } |
| |
| template <class T> struct identity { using type = T; }; |
| template <class T> using identity_t = typename identity<T>::type; |
| |
| template <class T, class U> struct C { |
| C(T, U); // #1 |
| }; |
| |
| C(char*, char*) -> C<int,int>; // #3 |
| |
| template<class V> |
| using A = C<V *, V *>; |
| |
| char c; |
| A a4 (&c, &c); // ignores #3 because C<int,int> is not an A<V> |
| |
| static_assert (__is_same_as(decltype(a4),A<char>)); |
| |
| C c2 (&c, &c); // { dg-error "conversion" } deduces with #3 |
