1 // RUN: %clang_cc1 -fsyntax-only -verify %s
2 
3 
4 struct Sub0 {
5   int &operator[](int);
6 };
7 
8 struct Sub1 {
9   long &operator[](long); // expected-note{{candidate function}}
10 };
11 
12 struct ConvertibleToInt {
13   operator int();
14 };
15 
16 template<typename T, typename U, typename Result>
17 struct Subscript0 {
testSubscript018   void test(T t, U u) {
19     Result &result = t[u]; // expected-error{{no viable overloaded operator[] for type}}
20   }
21 };
22 
23 template struct Subscript0<int*, int, int&>;
24 template struct Subscript0<Sub0, int, int&>;
25 template struct Subscript0<Sub1, ConvertibleToInt, long&>;
26 template struct Subscript0<Sub1, Sub0, long&>; // expected-note{{instantiation}}
27 
28 // PR5345
29 template <typename T>
30 struct S {
operator []S31   bool operator[](int n) const { return true; }
32 };
33 
34 template <typename T>
Foo(const S<int> & s,T x)35 void Foo(const S<int>& s, T x) {
36   if (s[0]) {}
37 }
38 
Bar()39 void Bar() {
40   Foo(S<int>(), 0);
41 }
42