1 // PR c++/44175
2 // { dg-do compile { target c++11 } }
3 
4 template <bool, class T> struct enable_if { };
5 template <class T> struct enable_if <true, T> { typedef T type; };
6 
7 template <class F, int N>
8 void ft (F f, typename enable_if<N!=0, int>::type) {}
9 
10 template< class F, int N >
11 decltype(ft<F, N-1> (F(), 0))	// { dg-error "depth" }
12 ft (F f, typename enable_if<N==0, int>::type) {}
13 
14 int main() {
15   ft<struct a*, 2> (0, 0);	// { dg-message "from here" }
16 }
17 
18 // { dg-prune-output "compilation terminated" }
19