| // PR c++/89761 | |
| // { dg-do compile { target c++17 } } | |
| template <int...> struct seq {}; | |
| template <bool> struct S { | |
| template <typename Args> | |
| constexpr static void call(Args&&...) {} | |
| }; | |
| template <int ...Idx,typename ...Args> | |
| auto foo (seq<Idx...>, Args&& ...args) { | |
| return (S<Idx==sizeof...(args)>::call(args), ...); | |
| } | |
| void bar() { | |
| foo(seq<0,1,2>{}, 1,2,3); | |
| } |