21 lines · cpp
1// RUN: %clang_cc1 -verify -std=c++20 -fsyntax-only %s2// RUN: %clang_cc1 -verify -std=c++20 -fsyntax-only %s -fexperimental-new-constant-interpreter3 4struct S { // expected-note {{candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'S &&' for 1st argument}} \5 // expected-note {{candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const S &' for 1st argument}}6 int e;7};8 9template<class T>10consteval int get_format() {11 return nullptr; // expected-error {{cannot initialize return object of type 'int' with an rvalue of type 'std::nullptr_t'}}12}13 14template<class T>15constexpr S f(T) noexcept {16 return get_format<T>(); // expected-error {{no viable conversion from returned value of type 'int' to function return type 'S'}}17}18 19constexpr S x = f(0); // expected-error {{constexpr variable 'x' must be initialized by a constant expression}} \20 // expected-note {{in instantiation of function template specialization 'f<int>' requested here}}21