| // RUN: %clang_cc1 -std=c++20 -verify %s |
| // RUN: %clang_cc1 -std=c++20 -verify %s -DDEPENDENT_OR |
| |
| #ifdef DEPENDENT_OR |
| // This causes the || below to be a CXXOperatorCallExpr not a BinaryOperator. |
| struct A {}; bool operator||(A, A); |
| #endif |
| |
| namespace PR45589 { |
| template<typename T> struct X { static constexpr bool value = T::value; }; // expected-error {{cannot be used prior to '::'}} |
| struct False { static constexpr bool value = false; }; |
| struct True { static constexpr bool value = true; }; |
| |
| template<typename T> concept C = true; |
| |
| template<bool B, typename T> constexpr int test = 0; |
| template<bool B, typename T> requires C<T> constexpr int test<B, T> = 1; |
| template<bool B, typename T> requires (B && C<T>) || (X<T>::value && C<T>) constexpr int test<B, T> = 2; // expected-error {{non-constant expression}} expected-note {{subexpression}} expected-note {{instantiation of}} expected-note {{while substituting}} |
| static_assert(test<true, False> == 2); |
| static_assert(test<true, True> == 2); |
| static_assert(test<true, char> == 2); // satisfaction of second term of || not considered |
| static_assert(test<false, False> == 1); |
| static_assert(test<false, True> == 2); // constraints are partially ordered |
| // FIXME: These diagnostics are excessive. |
| static_assert(test<false, char> == 1); // expected-note 2{{while}} expected-note 2{{during}} |
| } |