overloaded-operator-decl.cpp revision 621b3933e570792810386b891264c78e3bd7b169 
1// RUN: clang -fsyntax-only -verify %s
2struct X {
3  X();
4  X(int);
5};
6
7X operator+(X, X);
8X operator-(X, X) { X x; return x; }
9
10struct Y {
11  Y operator-() const;
12  void operator()(int x = 17) const;
13  int operator[](int);
14
15  static int operator+(Y, Y); // expected-error{{overloaded 'operator+' cannot be a static member function}}
16};
17
18
19void f(X x) {
20  x = operator+(x, x);
21}
22
23X operator+(int, float); // expected-error{{overloaded 'operator+' must have at least one parameter of class or enumeration type}}
24
25X operator*(X, X = 5); // expected-error{{parameter of overloaded 'operator*' cannot have a default argument}}
26
27X operator/(X, X, ...); // expected-error{{overloaded 'operator/' cannot be variadic}}
28
29X operator%(Y); // expected-error{{overloaded 'operator%' must be a binary operator (has 1 parameter)}}
30
31void operator()(Y&, int, int); // expected-error{{overloaded 'operator()' must be a non-static member function}}
32
33typedef int INT;
34typedef float FLOAT;
35Y& operator++(Y&);
36Y operator++(Y&, INT);
37X operator++(X&, FLOAT); // expected-error{{parameter of overloaded post-increment operator must have type 'int' (not 'FLOAT')}}
38
39int operator+; // expected-error{{'operator+' cannot be the name of a variable or data member}}
40