1 // { dg-options "-std=c++17 -fconcepts" }
4 concept bool C1 = __is_same_as(T, int);
7 concept bool C2 = N == 0;
9 template<template<typename> class X>
10 concept bool C3 = true;
12 template<typename> struct Foo;
14 template<C1...> struct S1;
15 template<C1... Ts> struct S1 { };
17 template<C2...> struct S2;
18 template<C2... Ns> struct S2 { };
20 template<C3...> struct S3;
21 template<C3... Xs> struct S3 { };
23 S1<int, int, int> s1; // OK