You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82 lines
2.0 KiB
82 lines
2.0 KiB
7 months ago
|
// RUN: %clang_cc1 -std=c++11 -verify %s
|
||
|
|
|
||
|
|
struct B1 { // expected-note 2{{candidate}}
|
||
|
|
B1(int); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct B2 { // expected-note 2{{candidate}}
|
||
|
|
B2(int); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct D1 : B1, B2 { // expected-note 2{{candidate}}
|
||
|
|
using B1::B1; // expected-note 3{{inherited here}}
|
||
|
|
using B2::B2; // expected-note 3{{inherited here}}
|
||
|
|
};
|
||
|
|
D1 d1(0); // expected-error {{ambiguous}}
|
||
|
|
|
||
|
|
struct D2 : B1, B2 {
|
||
|
|
using B1::B1;
|
||
|
|
using B2::B2;
|
||
|
|
D2(int);
|
||
|
|
};
|
||
|
|
D2 d2(0); // ok
|
||
|
|
|
||
|
|
|
||
|
|
// The emergent behavior of implicit special members is a bit odd when
|
||
|
|
// inheriting from multiple base classes.
|
||
|
|
namespace default_ctor {
|
||
|
|
struct C;
|
||
|
|
struct D;
|
||
|
|
|
||
|
|
struct A { // expected-note 4{{candidate}}
|
||
|
|
A(); // expected-note {{candidate}}
|
||
|
|
|
||
|
|
A(C &&); // expected-note {{candidate}}
|
||
|
|
C &operator=(C&&); // expected-note {{candidate}}
|
||
|
|
|
||
|
|
A(D &&); // expected-note {{candidate}}
|
||
|
|
D &operator=(D&&); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct B { // expected-note 4{{candidate}}
|
||
|
|
B(); // expected-note {{candidate}}
|
||
|
|
|
||
|
|
B(C &&); // expected-note {{candidate}}
|
||
|
|
C &operator=(C&&); // expected-note {{candidate}}
|
||
|
|
|
||
|
|
B(D &&); // expected-note {{candidate}}
|
||
|
|
D &operator=(D&&); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct C : A, B {
|
||
|
|
using A::A;
|
||
|
|
using A::operator=;
|
||
|
|
using B::B;
|
||
|
|
using B::operator=;
|
||
|
|
};
|
||
|
|
struct D : A, B {
|
||
|
|
using A::A; // expected-note 5{{inherited here}}
|
||
|
|
using A::operator=;
|
||
|
|
using B::B; // expected-note 5{{inherited here}}
|
||
|
|
using B::operator=;
|
||
|
|
|
||
|
|
D(int);
|
||
|
|
D(const D&); // expected-note {{candidate}}
|
||
|
|
D &operator=(const D&); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
|
||
|
|
C c;
|
||
|
|
void f(C c) {
|
||
|
|
C c2(static_cast<C&&>(c));
|
||
|
|
c = static_cast<C&&>(c);
|
||
|
|
}
|
||
|
|
|
||
|
|
// D does not declare D(), D(D&&), nor operator=(D&&), so the base class
|
||
|
|
// versions are inherited.
|
||
|
|
D d; // expected-error {{ambiguous}}
|
||
|
|
void f(D d) {
|
||
|
|
D d2(static_cast<D&&>(d)); // expected-error {{ambiguous}}
|
||
|
|
d = static_cast<D&&>(d); // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
}
|