functor parameter problem

[Mitsukai]

hi i have a problem.

error: no matching function for call to `test1(int&, int)'

namespace test0 {

	template<typename test10, typename test11>
	const bool test1(bool&, const test10&, const test11&)
	{
		return(true);
	}
}

		template<typename test10, typename test11, typename test12>
		const bool test1(test10&, const test11&, const test12& = test0::test1)
		{
            return(false);
		}

int main(void)
{
    int x = 0;
    test1(x, 0);
}

i dont know why functor wrong.