| // RUN: %clang_cc1 -std=c++20 -verify %s |
| |
| // expected-error@+1{{use of undeclared identifier 'b'}} |
| constexpr bool CausesRecoveryExpr = b; |
| |
| template<typename T> |
| concept ReferencesCRE = CausesRecoveryExpr; |
| |
| template<typename T> requires CausesRecoveryExpr // #NVC1REQ |
| void NoViableCands1(){} // #NVC1 |
| |
| template<typename T> requires ReferencesCRE<T> // #NVC2REQ |
| void NoViableCands2(){} // #NVC2 |
| |
| template<ReferencesCRE T> // #NVC3REQ |
| void NoViableCands3(){} // #NVC3 |
| |
| void NVCUse() { |
| NoViableCands1<int>(); |
| // expected-error@-1 {{no matching function for call to 'NoViableCands1'}} |
| // expected-note@#NVC1{{candidate template ignored: constraints not satisfied}} |
| // expected-note@#NVC1REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| |
| NoViableCands2<int>(); |
| // expected-error@-1 {{no matching function for call to 'NoViableCands2'}} |
| // expected-note@#NVC2{{candidate template ignored: constraints not satisfied}} |
| // expected-note@#NVC2REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| NoViableCands3<int>(); |
| // expected-error@-1 {{no matching function for call to 'NoViableCands3'}} |
| // expected-note@#NVC3{{candidate template ignored: constraints not satisfied}} |
| // expected-note@#NVC3REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| } |
| |
| template<typename T> requires CausesRecoveryExpr // #OVC1REQ |
| void OtherViableCands1(){} // #OVC1 |
| |
| template<typename T> |
| void OtherViableCands1(){} // #OVC1_ALT |
| |
| template<typename T> requires ReferencesCRE<T> // #OVC2REQ |
| void OtherViableCands2(){} // #OVC2 |
| |
| template<typename T> |
| void OtherViableCands2(){} // #OVC2_ALT |
| |
| template<ReferencesCRE T> // #OVC3REQ |
| void OtherViableCands3(){} // #OVC3 |
| template<typename T> |
| void OtherViableCands3(){} // #OVC3_ALT |
| |
| void OVCUse() { |
| OtherViableCands1<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands1'}} |
| // expected-note@#OVC1_ALT {{candidate function}} |
| // expected-note@#OVC1 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OVC1REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| OtherViableCands2<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands2'}} |
| // expected-note@#OVC2_ALT {{candidate function}} |
| // expected-note@#OVC2 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OVC2REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| OtherViableCands3<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands3'}} |
| // expected-note@#OVC3_ALT {{candidate function}} |
| // expected-note@#OVC3 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OVC3REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| } |
| |
| template<typename T> requires CausesRecoveryExpr // #OBNVC1REQ |
| void OtherBadNoViableCands1(){} // #OBNVC1 |
| |
| template<typename T> requires false // #OBNVC1REQ_ALT |
| void OtherBadNoViableCands1(){} // #OBNVC1_ALT |
| |
| template<typename T> requires ReferencesCRE<T> // #OBNVC2REQ |
| void OtherBadNoViableCands2(){} // #OBNVC2 |
| |
| template<typename T> requires false// #OBNVC2REQ_ALT |
| void OtherBadNoViableCands2(){} // #OBNVC2_ALT |
| |
| template<ReferencesCRE T> // #OBNVC3REQ |
| void OtherBadNoViableCands3(){} // #OBNVC3 |
| template<typename T> requires false // #OBNVC3REQ_ALT |
| void OtherBadNoViableCands3(){} // #OBNVC3_ALT |
| |
| void OBNVCUse() { |
| OtherBadNoViableCands1<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherBadNoViableCands1'}} |
| // expected-note@#OBNVC1_ALT {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC1REQ_ALT {{because 'false' evaluated to false}} |
| // expected-note@#OBNVC1 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC1REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| OtherBadNoViableCands2<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherBadNoViableCands2'}} |
| // expected-note@#OBNVC2_ALT {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC2REQ_ALT {{because 'false' evaluated to false}} |
| // expected-note@#OBNVC2 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC2REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| OtherBadNoViableCands3<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherBadNoViableCands3'}} |
| // expected-note@#OBNVC3_ALT {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC3REQ_ALT {{because 'false' evaluated to false}} |
| // expected-note@#OBNVC3 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#OBNVC3REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| } |
| |
| |
| // Same tests with member functions. |
| struct OVC { |
| template<typename T> requires CausesRecoveryExpr // #MEMOVC1REQ |
| void OtherViableCands1(){} // #MEMOVC1 |
| |
| template<typename T> |
| void OtherViableCands1(){} // #MEMOVC1_ALT |
| |
| template<typename T> requires ReferencesCRE<T> // #MEMOVC2REQ |
| void OtherViableCands2(){} // #MEMOVC2 |
| |
| template<typename T> |
| void OtherViableCands2(){} // #MEMOVC2_ALT |
| |
| template<ReferencesCRE T> // #MEMOVC3REQ |
| void OtherViableCands3(){} // #MEMOVC3 |
| template<typename T> |
| void OtherViableCands3(){} // #MEMOVC3_ALT |
| }; |
| |
| void MemOVCUse() { |
| OVC S; |
| S.OtherViableCands1<int>(); |
| // expected-error@-1 {{no matching member function for call to 'OtherViableCands1'}} |
| // expected-note@#MEMOVC1_ALT {{candidate function}} |
| // expected-note@#MEMOVC1 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#MEMOVC1REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| S.OtherViableCands2<int>(); |
| // expected-error@-1 {{no matching member function for call to 'OtherViableCands2'}} |
| // expected-note@#MEMOVC2_ALT {{candidate function}} |
| // expected-note@#MEMOVC2 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#MEMOVC2REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| S.OtherViableCands3<int>(); |
| // expected-error@-1 {{no matching member function for call to 'OtherViableCands3'}} |
| // expected-note@#MEMOVC3_ALT {{candidate function}} |
| // expected-note@#MEMOVC3 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#MEMOVC3REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| } |
| |
| struct StaticOVC { |
| template<typename T> requires CausesRecoveryExpr // #SMEMOVC1REQ |
| static void OtherViableCands1(){} // #SMEMOVC1 |
| |
| template<typename T> |
| static void OtherViableCands1(){} // #SMEMOVC1_ALT |
| |
| template<typename T> requires ReferencesCRE<T> // #SMEMOVC2REQ |
| static void OtherViableCands2(){} // #SMEMOVC2 |
| |
| template<typename T> |
| static void OtherViableCands2(){} // #SMEMOVC2_ALT |
| |
| template<ReferencesCRE T> // #SMEMOVC3REQ |
| static void OtherViableCands3(){} // #SMEMOVC3 |
| template<typename T> |
| static void OtherViableCands3(){} // #SMEMOVC3_ALT |
| }; |
| |
| void StaticMemOVCUse() { |
| StaticOVC::OtherViableCands1<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands1'}} |
| // expected-note@#SMEMOVC1_ALT {{candidate function}} |
| // expected-note@#SMEMOVC1 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#SMEMOVC1REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| StaticOVC::OtherViableCands2<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands2'}} |
| // expected-note@#SMEMOVC2_ALT {{candidate function}} |
| // expected-note@#SMEMOVC2 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#SMEMOVC2REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| StaticOVC::OtherViableCands3<int>(); |
| // expected-error@-1 {{no matching function for call to 'OtherViableCands3'}} |
| // expected-note@#SMEMOVC3_ALT {{candidate function}} |
| // expected-note@#SMEMOVC3 {{candidate template ignored: constraints not satisfied}} |
| // expected-note@#SMEMOVC3REQ{{because substituted constraint expression is ill-formed: constraint depends on a previously diagnosed expression}} |
| } |
| |
| namespace GH58548 { |
| |
| template <class, class> struct formatter; // #primary-template |
| template <class, class> struct basic_format_context {}; |
| |
| template <typename CharType> |
| concept has_format_function = |
| format(basic_format_context<CharType, CharType>()); |
| |
| template <typename ValueType, typename CharType> |
| requires has_format_function<CharType> |
| struct formatter<ValueType, CharType> { |
| template <typename OutputIt> |
| CharType format(basic_format_context<OutputIt, CharType>); |
| }; |
| |
| template <class Ctx> int handle_replacement_field(Ctx arg) { |
| formatter<decltype(arg), int> ctx; // expected-error {{implicit instantiation of undefined template}} |
| return 0; |
| } |
| |
| int x = handle_replacement_field(0); |
| // expected-note@-1 {{template specialization 'GH58548::handle_replacement_field<int>' requested here}} |
| // expected-note@#primary-template {{is declared here}} |
| |
| } // GH58548 |
