зеркало из https://github.com/microsoft/clang.git
175 строки
3.5 KiB
C++
175 строки
3.5 KiB
C++
// RUN: clang -fsyntax-only -verify %s
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class X { };
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X operator+(X, X);
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void f(X x) {
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x = x + x;
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}
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struct Y;
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struct Z;
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struct Y {
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Y(const Z&);
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};
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struct Z {
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Z(const Y&);
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};
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Y operator+(Y, Y);
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bool operator-(Y, Y); // expected-note{{candidate function}}
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bool operator-(Z, Z); // expected-note{{candidate function}}
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void g(Y y, Z z) {
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y = y + z;
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bool b = y - z; // expected-error{{use of overloaded operator '-' is ambiguous; candidates are:}}
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}
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struct A {
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bool operator==(Z&); // expected-note{{candidate function}}
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};
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A make_A();
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bool operator==(A&, Z&); // expected-note{{candidate function}}
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void h(A a, const A ac, Z z) {
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make_A() == z;
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a == z; // expected-error{{use of overloaded operator '==' is ambiguous; candidates are:}}
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ac == z; // expected-error{{invalid operands to binary expression ('struct A const' and 'struct Z')}}
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}
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struct B {
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bool operator==(const B&) const;
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void test(Z z) {
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make_A() == z;
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}
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};
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enum Enum1 { };
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enum Enum2 { };
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struct E1 {
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E1(Enum1) { }
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};
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struct E2 {
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E2(Enum2);
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};
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// C++ [over.match.oper]p3 - enum restriction.
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float& operator==(E1, E2);
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void enum_test(Enum1 enum1, Enum2 enum2, E1 e1, E2 e2) {
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float &f1 = (e1 == e2);
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float &f2 = (enum1 == e2);
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float &f3 = (e1 == enum2);
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float &f4 = (enum1 == enum2); // expected-error{{non-const reference to type 'float' cannot be initialized with a temporary of type '_Bool'}}
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}
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struct PostInc {
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PostInc operator++(int);
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PostInc& operator++();
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};
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struct PostDec {
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PostDec operator--(int);
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PostDec& operator--();
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};
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void incdec_test(PostInc pi, PostDec pd) {
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const PostInc& pi1 = pi++;
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const PostDec& pd1 = pd--;
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PostInc &pi2 = ++pi;
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PostDec &pd2 = --pd;
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}
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struct SmartPtr {
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int& operator*();
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long& operator*() const volatile;
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};
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void test_smartptr(SmartPtr ptr, const SmartPtr cptr,
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const volatile SmartPtr cvptr) {
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int &ir = *ptr;
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long &lr = *cptr;
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long &lr2 = *cvptr;
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}
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struct ArrayLike {
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int& operator[](int);
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};
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void test_arraylike(ArrayLike a) {
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int& ir = a[17];
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}
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struct SmartRef {
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int* operator&();
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};
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void test_smartref(SmartRef r) {
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int* ip = &r;
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}
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bool& operator,(X, Y);
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void test_comma(X x, Y y) {
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bool& b1 = (x, y);
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X& xr = (x, x);
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}
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struct Callable {
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int& operator()(int, double = 2.71828); // expected-note{{candidate function}}
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float& operator()(int, double, long, ...); // expected-note{{candidate function}}
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};
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void test_callable(Callable c) {
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int &ir = c(1);
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float &fr = c(1, 3.14159, 17, 42);
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c(); // expected-error{{no matching function for call to object of type 'struct Callable'; candidates are:}}
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}
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typedef float FLOAT;
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typedef int& INTREF;
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typedef INTREF Func1(FLOAT, double);
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typedef float& Func2(int, double);
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struct ConvertToFunc {
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operator Func1*(); // expected-note{{conversion candidate of type 'INTREF (*)(FLOAT, double)'}}
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operator Func2&(); // expected-note{{conversion candidate of type 'float &(&)(int, double)'}}
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void operator()();
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};
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void test_funcptr_call(ConvertToFunc ctf) {
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int &i1 = ctf(1.0f, 2.0);
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float &f2 = ctf((short int)1, 1.0f);
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ctf((long int)17, 2.0); // expected-error{{error: call to object of type 'struct ConvertToFunc' is ambiguous; candidates are:}}
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ctf();
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}
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struct HasMember {
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int m;
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};
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struct Arrow1 {
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HasMember* operator->();
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};
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struct Arrow2 {
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Arrow1 operator->(); // expected-note{{candidate function}}
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};
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void test_arrow(Arrow1 a1, Arrow2 a2, const Arrow2 a3) {
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int &i1 = a1->m;
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int &i2 = a2->m;
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a3->m; // expected-error{{no viable overloaded 'operator->'; candidate is}}
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}
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