cxx2a-constraints.cpp
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// RUN: %clang_cc1 -std=c++2a -emit-pch %s -o %t
// RUN: %clang_cc1 -std=c++2a -include-pch %t -verify %s
// RUN: %clang_cc1 -std=c++2a -emit-pch -fpch-instantiate-templates %s -o %t
// RUN: %clang_cc1 -std=c++2a -include-pch %t -verify %s
// expected-no-diagnostics
#ifndef HEADER
#define HEADER
template<typename T, typename U = char>
concept SizedLike = sizeof(T) == sizeof(U);
template <class T> void f(T) requires (sizeof(int) == sizeof(T)) {}
template <class T> void f(T) requires (sizeof(char) == sizeof(T)) {}
template <class T> requires (sizeof(int) == sizeof(T)) void g(T) {}
template <class T> requires (sizeof(char) == sizeof(T)) void g(T) {}
template <SizedLike<int> T> void h(T) {}
template <SizedLike<char> T> void h(T) {}
template <SizedLike<int> T> void i(T) {}
template <SizedLike T> void i(T) {}
void j(SizedLike<int> auto ...ints) {}
#else /*included pch*/
int main() {
(void)f('1');
(void)f(1);
(void)g('1');
(void)g(1);
(void)h('1');
(void)h(1);
(void)i('1');
(void)i(1);
(void)j(1, 2, 3);
}
#endif // HEADER