1 // PR c++/69098
2 // { dg-do compile { target c++14 } }
3 
4 template<typename> struct SpecPerType;
5 
6 class Specializer
7 {
8 public:
MbrFnTempl()9     template<bool> void MbrFnTempl() //Must be a template
10 	{
11 	}
12 	template<unsigned> struct InnerClassTempl
13 	{  //Had to be a template whenever I tested for it
14 		static void InnerMemberFn();
15 	};
16 
Trigger()17 	void Trigger()
18 	{
19 		InnerClassTempl<0u>::InnerMemberFn();
20 	}
21 };
22 
23 template<> struct SpecPerType<Specializer>
24 {
25 	using FnType = void (Specializer::*)();
26     template<bool P> static constexpr FnType SpecMbrFnPtr =
27         &Specializer::template MbrFnTempl<P>;
28 };
29 
30 template<bool> constexpr SpecPerType<Specializer>::FnType
31     SpecPerType<Specializer>::SpecMbrFnPtr; //Just a formalism
32 
33 template<unsigned X> void Specializer::InnerClassTempl<X>::InnerMemberFn()
34 {
35 	using Spec = SpecPerType<Specializer>;
36 	typename Spec::FnType ErrorSite = Spec::template SpecMbrFnPtr<true>;
37     //ErrorSite would get called next in the original code
38     //(this should result in a call to MbrFnTempl)
39 }
40 
41 int main()
42 {
43 }
44