1 // PR c++/89480
2 // { dg-do compile { target c++11 } }
3 
4 template <typename Foo, Foo Part>
5 struct TSelect {};
6 
7 enum What {
8     The
9 };
10 
11 template <typename Foo>
12 struct AnotherOneSelector {
13     static constexpr Foo Id = Foo::The;
14 };
15 
16 template <typename Foo, typename SelectPartType>
17 struct THelper;
18 
19 template <typename Foo>
20 struct THelper<Foo, TSelect<Foo, Foo{AnotherOneSelector<Foo>::Id}>> {};
21 
22 int main() {
23     THelper<What, TSelect<What, What::The>> t;
24 }
25