1// RUN: %clang_cc1 -fsyntax-only -verify %s
2template<typename T, typename U = float> struct A { };
3
4typedef A<int> A_int;
5
6typedef float FLOAT;
7
8A<int, FLOAT> *foo(A<int> *ptr, A<int> const *ptr2, A<int, double> *ptr3) {
9  if (ptr)
10    return ptr; // okay
11  else if (ptr2)
12    return ptr2; // expected-error{{cannot initialize return object of type 'A<int, FLOAT> *' with an lvalue of type 'const A<int> *'}}
13  else {
14    return ptr3; // expected-error{{cannot initialize return object of type 'A<int, FLOAT> *' with an lvalue of type 'A<int, double> *'}}
15  }
16}
17
18template<int I> struct B;
19
20const int value = 12;
21B<17 + 2> *bar(B<(19)> *ptr1, B< (::value + 7) > *ptr2, B<19 - 3> *ptr3) {
22  if (ptr1)
23    return ptr1;
24  else if (ptr2)
25    return ptr2;
26  else
27    return ptr3; // expected-error{{cannot initialize return object of type 'B<17 + 2> *' with an lvalue of type 'B<19 - 3>}}
28}
29
30typedef B<5> B5;
31
32
33namespace N {
34  template<typename T> struct C {};
35}
36
37N::C<int> c1;
38typedef N::C<float> c2;
39
40// PR5655
41template<typename T> struct Foo { }; // expected-note{{template is declared here}}
42
43void f(void) { Foo bar; } // expected-error{{use of class template 'Foo' requires template arguments}}
44
45// rdar://problem/8254267
46template <typename T> class Party;
47template <> class Party<T> { friend struct Party<>; }; // expected-error {{use of undeclared identifier 'T'}}
48