1// RUN: %clang_cc1 %s -emit-llvm -triple %itanium_abi_triple -o - | FileCheck %s
2// RUN: %clang_cc1 %s -DREDEFINE -verify
3// PR8007: friend function not instantiated.
4
5// CHECK: define linkonce_odr{{.*}}_ZlsR11std_ostreamRK8StreamerI3FooE
6
7struct std_ostream
8{
9  int dummy;
10};
11
12std_ostream cout;
13
14template <typename STRUCT_TYPE>
15struct Streamer
16{
17    friend std_ostream& operator << (std_ostream& o, const Streamer& f) // expected-error{{redefinition of 'operator<<'}}
18        {
19            Streamer s(f);
20            s(o);
21            return o;
22        }
23
24    Streamer(const STRUCT_TYPE& s) : s(s) {}
25
26    const STRUCT_TYPE& s;
27    void operator () (std_ostream&) const;
28};
29
30typedef struct Foo {} Foo;
31
32inline std_ostream& operator << (std_ostream&, const Streamer<Foo>&);
33#ifdef REDEFINE
34std_ostream& operator << (std_ostream& o, const Streamer<Foo>&) // expected-note{{is here}}
35{
36  // Sema should flag this as a redefinition
37  return o;
38}
39#endif
40
41template <>
42void Streamer<Foo>::operator () (std_ostream& o) const // expected-note{{requested here}}
43{
44}
45
46int main(void)
47{
48    Foo foo;
49    cout << foo;
50}
51