1 // { dg-options "-std=c++17 -fconcepts" }
2
3 template<typename T>
Type()4 concept bool Type() { return true; }
5
6 template<typename T, typename U>
Same()7 concept bool Same() { return __is_same_as(T, U); }
8
9 template<typename T, typename U>
C1()10 concept bool C1() { return true; }
11
12 template<typename T, typename... Args>
C2()13 concept bool C2() { return true; }
14
15 template<Same<int> T> struct S1 { };
16 template<typename T, Same<T> U> struct S2 { };
17
f(Same<int> q)18 void f(Same<int> q) { }
g(Type a,Same<decltype (a)> b)19 void g(Type a, Same<decltype(a)> b) { }
20
h0(Same<int> * a)21 void h0(Same<int>* a) { }
h1(C1<int> * a)22 void h1(C1<int>* a) { }
h2(C2<char,short,int,long> * a)23 void h2(C2<char, short, int, long>* a) { }
24
main()25 int main() {
26 S1<int> s1;
27 S2<int, int> s2;
28 f(0);
29 g(0, 1);
30 h0((int*)0);
31 h1((int*)0);
32 h2((int*)0);
33 }
34