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// RUN: %clang_cc1 -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++17 -fsyntax-only -verify %s
// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s
typedef int fn;
namespace N0 {
struct A {
friend void fn();
void g() {
int i = fn(1);
}
};
}
namespace N1 {
struct A {
friend void fn(A &);
operator int();
void g(A a) {
// ADL should not apply to the lookup of 'fn', it refers to the typedef
// above.
int i = fn(a);
}
};
}
namespace std_example {
int h; // expected-note {{non-template declaration}}
void g();
#if __cplusplus <= 201703L
// expected-note@-2 {{non-template declaration}}
#endif
namespace N {
struct A {};
template<class T> int f(T);
template<class T> int g(T);
#if __cplusplus <= 201703L
// expected-note@-2 {{here}}
#endif
template<class T> int h(T); // expected-note {{here}}
}
int x = f<N::A>(N::A());
#if __cplusplus <= 201703L
// expected-warning@-2 {{C++20 extension}}
#endif
int y = g<N::A>(N::A());
#if __cplusplus <= 201703L
// expected-error@-2 {{'g' does not name a template but is followed by template arguments; did you mean 'N::g'?}}
#endif
int z = h<N::A>(N::A()); // expected-error {{'h' does not name a template but is followed by template arguments; did you mean 'N::h'?}}
}
namespace AnnexD_example {
struct A {};
void operator<(void (*fp)(), A);
void f() {}
int main() {
A a;
f < a;
#if __cplusplus > 201703L
// expected-error@-2 {{expected '>'}} expected-note@-2 {{to match this '<'}}
#endif
(f) < a;
}
}
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