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// RUN: clang -fsyntax-only -verify %s
class X { };
X operator+(X, X);
void f(X x) {
x = x + x;
}
struct Y;
struct Z;
struct Y {
Y(const Z&);
};
struct Z {
Z(const Y&);
};
Y operator+(Y, Y);
bool operator-(Y, Y); // expected-note{{candidate function}}
bool operator-(Z, Z); // expected-note{{candidate function}}
void g(Y y, Z z) {
y = y + z;
bool b = y - z; // expected-error{{use of overloaded operator '-' is ambiguous; candidates are:}}
}
struct A {
bool operator==(Z&); // expected-note{{candidate function}}
};
A make_A();
bool operator==(A&, Z&); // expected-note{{candidate function}}
void h(A a, const A ac, Z z) {
make_A() == z;
a == z; // expected-error{{use of overloaded operator '==' is ambiguous; candidates are:}}
ac == z; // expected-error{{invalid operands to binary expression ('struct A const' and 'struct Z')}}
}
struct B {
bool operator==(const B&) const;
void test(Z z) {
make_A() == z;
}
};
enum Enum1 { };
enum Enum2 { };
struct E1 {
E1(Enum1) { }
};
struct E2 {
E2(Enum2);
};
// C++ [over.match.oper]p3 - enum restriction.
float& operator==(E1, E2);
void enum_test(Enum1 enum1, Enum2 enum2, E1 e1, E2 e2) {
float &f1 = (e1 == e2);
float &f2 = (enum1 == e2);
float &f3 = (e1 == enum2);
float &f4 = (enum1 == enum2); // expected-error{{non-const reference to type 'float' cannot be initialized with a temporary of type '_Bool'}}
}
struct PostInc {
PostInc operator++(int);
PostInc& operator++();
};
struct PostDec {
PostDec operator--(int);
PostDec& operator--();
};
void incdec_test(PostInc pi, PostDec pd) {
const PostInc& pi1 = pi++;
const PostDec& pd1 = pd--;
PostInc &pi2 = ++pi;
PostDec &pd2 = --pd;
}
struct SmartPtr {
int& operator*();
// FIXME: spurious error: long& operator*() const;
};
void test_smartptr(SmartPtr ptr, const SmartPtr cptr) {
int &ir = *ptr;
// FIXME: reinstate long &lr = *cptr;
}
struct ArrayLike {
int& operator[](int);
};
void test_arraylike(ArrayLike a) {
int& ir = a[17];
}
struct SmartRef {
int* operator&();
};
void test_smartref(SmartRef r) {
int* ip = &r;
}
bool& operator,(X, Y);
void test_comma(X x, Y y) {
bool& b1 = (x, y);
X& xr = (x, x);
}
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