clang/test/SemaCXX/overloaded-operator-decl.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 struct X {
   3   X();
   4   X(int);
   5 };
   6
   7 X operator+(X, X);
   8 X operator-(X, X) { X x; return x; }
   9
  10 struct 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
  19 void f(X x) {
  20   x = operator+(x, x);
  21 }
  22
  23 X operator+(int, float); // expected-error{{overloaded 'operator+' must have at least one parameter of class or enumeration type}}
  24
  25 X operator*(X, X = 5); // expected-error{{parameter of overloaded 'operator*' cannot have a default argument}}
  26
  27 X operator/(X, X, ...); // expected-error{{overloaded 'operator/' cannot be variadic}}
  28
  29 X operator%(Y); // expected-error{{overloaded 'operator%' must be a binary operator (has 1 parameter)}}
  30
  31 void operator()(Y&, int, int); // expected-error{{overloaded 'operator()' must be a non-static member function}}
  32
  33 typedef int INT;
  34 typedef float FLOAT;
  35 Y& operator++(Y&);
  36 Y operator++(Y&, INT);
  37 X operator++(X&, FLOAT); // expected-error{{parameter of overloaded post-increment operator must have type 'int' (not 'FLOAT' (aka 'float'))}}
  38
  39 int operator+; // expected-error{{'operator+' cannot be the name of a variable or data member}}
  40
  41 namespace PR6238 {
  42   static struct {
  43     void operator()();
  44   } plus;
  45 }
  46
  47 struct PR10839 {
  48   operator int; // expected-error{{'operator int' cannot be the name of a variable or data member}}
  49   int operator+; // expected-error{{'operator+' cannot be the name of a variable or data member}}
  50 };
  51
  52 namespace PR14120 {
  53   struct A {
  54     static void operator()(int& i) { ++i; } // expected-error{{overloaded 'operator()' cannot be a static member function}}
  55   };
  56   void f() {
  57     int i = 0;
  58     A()(i);
  59   }
  60 }