===================================================================
@@ -0,0 +1,83 @@
+// PR c++/52744
+// { dg-do compile { target c++11 } }
+
+struct T
+{
+ int a;
+ void b(){}
+ int c(int)
+ {
+ return 1;
+ }
+};
+
+template<typename CT, CT> struct member_helper;
+
+template<typename FT, FT(T::*mem)>
+struct member_helper<FT(T::*), mem>
+{
+ static const char* worker()
+ {
+ return "for members";
+ }
+};
+
+template<typename Return, typename... Args, Return(T::*fun)(Args...)>
+struct member_helper<Return(T::*)(Args...), fun>
+{
+ static const char* worker()
+ {
+ return "for member functions returning non void";
+ }
+};
+
+template<typename... Args, void(T::*fun)(Args...)>
+struct member_helper<void(T::*)(Args...), fun>
+{
+ static const char* worker()
+ {
+ return "for member functions returning void";
+ }
+};
+
+void member_test()
+{
+ member_helper<decltype(&T::a), &T::a>::worker();
+ member_helper<decltype(&T::b), &T::b>::worker();
+ member_helper<decltype(&T::c), &T::c>::worker();
+}
+
+typedef void lua_State;
+
+template<typename T, T> class function_helper
+{
+ static_assert(sizeof(T) != sizeof(T),
+ "Error: function_helper works with functions (duh)");
+};
+
+template<typename Return, typename... Args, Return(*func)(Args...)>
+struct function_helper<Return(*)(Args...), func>
+{
+ static int wrapper(lua_State* l)
+ {
+ return 1;
+ }
+};
+
+template<typename... Args, void(*func)(Args...)>
+struct function_helper<void(*)(Args...), func>
+{
+ static int wrapper(lua_State* l)
+ {
+ return 0;
+ }
+};
+
+int ciao(int){ return 0; }
+void ciao2(int){}
+
+void function_test()
+{
+ function_helper<decltype(&ciao), &ciao>::wrapper(0);
+ function_helper<decltype(&ciao2), &ciao2>::wrapper(0);
+}