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// RUN: clang-cc -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 2{{candidate function}}
};
A make_A();
bool operator==(A&, Z&); // expected-note 2{{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 lvalue 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*();
long& operator*() const volatile;
};
void test_smartptr(SmartPtr ptr, const SmartPtr cptr,
const volatile SmartPtr cvptr) {
int &ir = *ptr;
long &lr = *cptr;
long &lr2 = *cvptr;
}
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);
}
struct Callable {
int& operator()(int, double = 2.71828); // expected-note{{candidate function}}
float& operator()(int, double, long, ...); // expected-note{{candidate function}}
double& operator()(float); // expected-note{{candidate function}}
};
struct Callable2 {
int& operator()(int i = 0);
double& operator()(...) const;
};
void test_callable(Callable c, Callable2 c2, const Callable2& c2c) {
int &ir = c(1);
float &fr = c(1, 3.14159, 17, 42);
c(); // expected-error{{no matching function for call to object of type 'struct Callable'; candidates are:}}
double &dr = c(1.0f);
int &ir2 = c2();
int &ir3 = c2(1);
double &fr2 = c2c();
}
typedef float FLOAT;
typedef int& INTREF;
typedef INTREF Func1(FLOAT, double);
typedef float& Func2(int, double);
struct ConvertToFunc {
operator Func1*(); // expected-note{{conversion candidate of type 'INTREF (*)(FLOAT, double)'}}
operator Func2&(); // expected-note{{conversion candidate of type 'float &(&)(int, double)'}}
void operator()();
};
void test_funcptr_call(ConvertToFunc ctf) {
int &i1 = ctf(1.0f, 2.0);
float &f2 = ctf((short int)1, 1.0f);
ctf((long int)17, 2.0); // expected-error{{error: call to object of type 'struct ConvertToFunc' is ambiguous; candidates are:}}
ctf();
}
struct HasMember {
int m;
};
struct Arrow1 {
HasMember* operator->();
};
struct Arrow2 {
Arrow1 operator->(); // expected-note{{candidate function}}
};
void test_arrow(Arrow1 a1, Arrow2 a2, const Arrow2 a3) {
int &i1 = a1->m;
int &i2 = a2->m;
a3->m; // expected-error{{no viable overloaded 'operator->'; candidate is}}
}
struct CopyConBase {
};
struct CopyCon : public CopyConBase {
CopyCon(const CopyConBase &Base);
CopyCon(const CopyConBase *Base) {
*this = *Base;
}
};
namespace N {
struct X { };
}
namespace M {
N::X operator+(N::X, N::X);
}
namespace M {
void test_X(N::X x) {
(void)(x + x);
}
}
struct AA { bool operator!=(AA&); };
struct BB : AA {};
bool x(BB y, BB z) { return y != z; }
struct AX {
AX& operator ->(); // expected-note {{declared at}}
int b;
};
void m() {
AX a;
a->b = 0; // expected-error {{circular pointer delegation detected}}
}
struct CircA {
struct CircB& operator->(); // expected-note {{declared at}}
int val;
};
struct CircB {
struct CircC& operator->(); // expected-note {{declared at}}
};
struct CircC {
struct CircA& operator->(); // expected-note {{declared at}}
};
void circ() {
CircA a;
a->val = 0; // expected-error {{circular pointer delegation detected}}
}
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