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// RUN: %clang_cc1 -fsyntax-only -verify %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
struct X0 { // expected-note {{candidate constructor (the implicit copy constructor) not viable}}
#if __cplusplus >= 201103L // C++11 or later
// expected-note@-2 {{candidate constructor (the implicit move constructor) not viable}}
#endif
X0(int); // expected-note{{candidate}}
template<typename T> X0(T); // expected-note {{candidate}}
template<typename T, typename U> X0(T*, U*); // expected-note {{candidate}}
// PR4761
template<typename T> X0() : f0(T::foo) {} // expected-note {{candidate}}
int f0;
};
void accept_X0(X0);
void test_X0(int i, float f) {
X0 x0a(i);
X0 x0b(f);
X0 x0c = i;
X0 x0d = f;
accept_X0(i);
accept_X0(&i);
accept_X0(f);
accept_X0(&f);
X0 x0e(&i, &f);
X0 x0f(&f, &i);
X0 x0g(f, &i); // expected-error{{no matching constructor}}
}
template<typename T>
struct X1 {
X1(const X1&);
template<typename U> X1(const X1<U>&);
};
template<typename T>
struct Outer {
typedef X1<T> A;
A alloc;
explicit Outer(const A& a) : alloc(a) { }
};
void test_X1(X1<int> xi) {
Outer<int> oi(xi);
Outer<float> of(xi);
}
// PR4655
template<class C> struct A {};
template <> struct A<int>{A(const A<int>&);};
struct B { A<int> x; B(B& a) : x(a.x) {} };
struct X2 {
X2(); // expected-note{{candidate constructor}}
X2(X2&); // expected-note {{candidate constructor}}
template<typename T> X2(T); // expected-note {{candidate template ignored: instantiation would take its own class type by value}}
};
X2 test(bool Cond, X2 x2) {
if (Cond)
return x2; // okay, uses copy constructor
return X2(); // expected-error{{no matching constructor}}
}
struct X3 {
template<typename T> X3(T);
};
template<> X3::X3(X3); // expected-error{{must pass its first argument by reference}}
struct X4 {
X4();
~X4();
X4(X4&);
template<typename T> X4(const T&, int = 17);
};
X4 test_X4(bool Cond, X4 x4) {
X4 a(x4, 17); // okay, constructor template
X4 b(x4); // okay, copy constructor
return X4();
}
// Instantiation of a non-dependent use of a constructor
struct DefaultCtorHasDefaultArg {
explicit DefaultCtorHasDefaultArg(int i = 17);
};
template<typename T>
void default_ctor_inst() {
DefaultCtorHasDefaultArg def;
}
template void default_ctor_inst<int>();
template<typename T>
struct X5 {
X5();
X5(const T &);
};
struct X6 {
template<typename T> X6(T);
};
void test_X5_X6() {
X5<X6> tf;
X5<X6> tf2(tf);
}
namespace PR8182 {
struct foo {
foo();
template<class T> foo(T&);
private:
foo(const foo&);
};
void test_foo() {
foo f1;
foo f2(f1);
foo f3 = f1;
}
}
// Don't blow out the stack trying to call an illegal constructor
// instantiation. We intentionally allow implicit instantiations to
// exist, so make sure they're unusable.
//
// rdar://19199836
namespace self_by_value {
template <class T, class U> struct A {
A() {}
A(const A<T,U> &o) {}
A(A<T,T> o) {}
};
void helper(A<int,float>);
void test1(A<int,int> a) {
helper(a);
}
void test2() {
helper(A<int,int>());
}
}
namespace self_by_value_2 {
template <class T, class U> struct A {
A() {} // expected-note {{not viable: requires 0 arguments}}
A(A<T,U> &o) {} // expected-note {{not viable: expects an lvalue}}
A(A<T,T> o) {} // expected-note {{ignored: instantiation takes its own class type by value}}
};
void helper_A(A<int,int>); // expected-note {{passing argument to parameter here}}
void test_A() {
helper_A(A<int,int>()); // expected-error {{no matching constructor}}
}
}
namespace self_by_value_3 {
template <class T, class U> struct A {
A() {}
A(A<T,U> &o) {}
A(A<T,T> o) {}
};
void helper_A(A<int,int>);
void test_A(A<int,int> b) {
helper_A(b);
}
}
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