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#include <iostream>
using namespace std;
template<class S> class Foo;
 
template<class Ret, class Arg, class... Args>
class Foo<Ret(Arg*, Args...)> 
{
public:
	template<class FUNC>
	Foo(FUNC func, int)
	{
		cout << "func" << endl;
	}
	template<class Rett>
	Foo(Rett(int::*method)(Args... args)) { cout << "fptr" << endl; }
 
};
 
int main()
{
	return 0;
}
 

prog.cpp:15:14: error: expected ')' before '::' token
  Foo(Rett(int::*method)(Args... args)) { cout << "fptr" << endl; }
              ^
prog.cpp:15:14: error: expected ',' or '...' before '::' token
prog.cpp:15:38: error: expected constructor, destructor, or type conversion before ')' token
  Foo(Rett(int::*method)(Args... args)) { cout << "fptr" << endl; }
                                      ^

Standard output is empty