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// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s
// expected-no-diagnostics
template<typename T>
concept C = sizeof(T) <= sizeof(long);
template<typename T>
struct A {
template<typename U>
void f(U) requires C<U>;
void g() requires C<T>;
template<typename U>
void h(U) requires C<T>;
constexpr int i() requires C<T> {
return 0;
}
constexpr int i() requires C<T> && true {
return 1;
}
template<>
void f(char);
};
template<>
template<typename U>
void A<short>::f(U) requires C<U>;
template<>
template<typename U>
void A<short>::h(U) requires C<short>;
template<>
template<>
void A<int>::f(int);
template<>
void A<long>::g();
template<>
constexpr int A<long>::i() {
return 2;
}
static_assert(A<long>().i() == 2);
template<typename T>
struct D {
template<typename U>
static constexpr int f(U);
template<typename U>
static constexpr int f(U) requires (sizeof(T) == 1);
template<>
constexpr int f(int) {
return 1;
}
};
template<>
template<typename U>
constexpr int D<signed char>::f(U) requires (sizeof(signed char) == 1) {
return 0;
}
static_assert(D<char>::f(0) == 1);
static_assert(D<char[2]>::f(0) == 1);
static_assert(D<signed char>::f(0) == 1);
static_assert(D<signed char>::f(0.0) == 0);
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