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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
// C++03 requires that we check for a copy constructor when binding a
// reference to a reference-compatible rvalue, since we are allowed to
// make a copy. C++0x does not permit the copy, so ensure that we
// don't diagnose cases where the copy constructor is unavailable.
struct X1 {
X1();
explicit X1(const X1&);
};
struct X2 {
X2();
private:
X2(const X2&);
};
struct X3 {
X3();
private:
X3(X3&);
};
template<typename T>
T get_value_badly() {
double *dp = 0;
T *tp = dp;
return T();
}
template<typename T>
struct X4 {
X4();
X4(const X4&, T = get_value_badly<T>());
};
struct X5 {
X5();
X5(const X5&, const X5& = X5());
};
void g1(const X1&);
void g2(const X2&);
void g3(const X3&);
void g4(const X4<int>&);
void g5(const X5&);
void test() {
g1(X1());
g2(X2());
g3(X3());
g4(X4<int>());
g5(X5());
}
// Check that unavailable copy constructors do not cause SFINAE failures.
template<int> struct int_c { };
template<typename T> T f(const T&);
template<typename T>
int &g(int_c<sizeof(f(T()))> * = 0); // expected-note{{candidate function [with T = X3]}}
template<typename T> float &g(); // expected-note{{candidate function [with T = X3]}}
void h() {
float &fp = g<X3>(); // expected-error{{call to 'g' is ambiguous}}
}
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