// RUN: %clang_cc1 -verify %s -std=c++11 -Wno-defaulted-function-deleted
struct Trivial {};
template<typename T> struct CopyAssign {
static T t;
void test() {
t = t; // expected-error +{{deleted}}
}
};
template<typename T> struct MoveAssign {
static T t;
void test() {
// Overload resolution will ignore a defaulted, deleted move assignment,
// so check for it in a different way.
T &(T::*f)(T&&) = &T::operator=; // expected-error +{{deleted}}
}
};
template<typename T> struct MoveOrCopyAssign {
static T t;
void test() {
t = static_cast<T&&>(t); // expected-error +{{copy assignment operator is implicitly deleted}}
}
};
struct NonTrivialCopyAssign {
NonTrivialCopyAssign &operator=(const NonTrivialCopyAssign &);
};
struct NonTrivialMoveAssign {
NonTrivialMoveAssign &operator=(NonTrivialMoveAssign &&);
};
struct AmbiguousCopyAssign {
AmbiguousCopyAssign &operator=(const AmbiguousCopyAssign &) volatile;
AmbiguousCopyAssign &operator=(const AmbiguousCopyAssign &) const;
};
struct AmbiguousMoveAssign {
AmbiguousMoveAssign &operator=(const AmbiguousMoveAssign &&);
AmbiguousMoveAssign &operator=(volatile AmbiguousMoveAssign &&);
};
struct DeletedCopyAssign {
DeletedCopyAssign &operator=(const DeletedCopyAssign &) = delete; // expected-note 2{{deleted}}
};
struct DeletedMoveAssign {
DeletedMoveAssign &operator=(DeletedMoveAssign &&) = delete; // expected-note 2{{deleted}}
};
class InaccessibleCopyAssign {
InaccessibleCopyAssign &operator=(const InaccessibleCopyAssign &);
};
class InaccessibleMoveAssign {
InaccessibleMoveAssign &operator=(InaccessibleMoveAssign &&);
};
class NonConstCopyAssign {
NonConstCopyAssign &operator=(NonConstCopyAssign &);
};
// A defaulted copy/move assignment operator for class X is defined as deleted
// if X has:
// -- a variant member with a non-trivial corresponding assignment operator
// and X is a union-like class
struct A1 {
union {
NonTrivialCopyAssign x; // expected-note {{variant field 'x' has a non-trivial copy assign}}
};
};
template struct CopyAssign<A1>; // expected-note {{here}}
struct A2 {
A2 &operator=(A2 &&) = default; // expected-note {{here}}
union {
NonTrivialMoveAssign x; // expected-note {{variant field 'x' has a non-trivial move assign}}
};
};
template struct MoveAssign<A2>; // expected-note {{here}}
// -- a non-static const data member of (array of) non-class type
struct B1 {
const int a; // expected-note 2{{field 'a' is of const-qualified type}}
};
struct B2 {
const void *const a[3][9][2]; // expected-note 2{{field 'a' is of const-qualified type 'const void *const[3][9][2]'}}
};
struct B3 {
const void *a[3];
};
template struct CopyAssign<B1>; // expected-note {{here}}
template struct MoveAssign<B1>; // expected-note {{here}}
template struct CopyAssign<B2>; // expected-note {{here}}
template struct MoveAssign<B2>; // expected-note {{here}}
template struct CopyAssign<B3>;
template struct MoveAssign<B3>;
// -- a non-static data member of reference type
struct C1 {
int &a; // expected-note 2{{field 'a' is of reference type 'int &'}}
};
template struct CopyAssign<C1>; // expected-note {{here}}
template struct MoveAssign<C1>; // expected-note {{here}}
// -- a non-static data member of class type M that cannot be copied/moved
struct D1 {
AmbiguousCopyAssign a; // expected-note {{field 'a' has multiple copy}}
};
struct D2 {
D2 &operator=(D2 &&) = default; // expected-note {{here}} expected-note {{copy assignment operator is implicitly deleted}}
AmbiguousMoveAssign a; // expected-note {{field 'a' has multiple move}}
};
struct D3 {
DeletedCopyAssign a; // expected-note {{field 'a' has a deleted copy}}
};
struct D4 {
D4 &operator=(D4 &&) = default; // expected-note {{here}} expected-note {{copy assignment operator is implicitly deleted}}
DeletedMoveAssign a; // expected-note {{field 'a' has a deleted move}}
};
struct D5 {
InaccessibleCopyAssign a; // expected-note {{field 'a' has an inaccessible copy}}
};
struct D6 {
D6 &operator=(D6 &&) = default; // expected-note {{here}} expected-note {{copy assignment operator is implicitly deleted}}
InaccessibleMoveAssign a; // expected-note {{field 'a' has an inaccessible move}}
};
struct D7 {
const Trivial a; // expected-note 3{{field 'a' has no }}
};
struct D8 {
volatile Trivial a; // expected-note 3{{field 'a' has no }}
};
template struct CopyAssign<D1>; // expected-note {{here}}
template struct MoveAssign<D2>; // expected-note {{here}}
template struct MoveOrCopyAssign<D2>; // expected-note {{here}}
template struct CopyAssign<D3>; // expected-note {{here}}
template struct MoveAssign<D4>; // expected-note {{here}}
template struct MoveOrCopyAssign<D4>; // expected-note {{here}}
template struct CopyAssign<D5>; // expected-note {{here}}
template struct MoveAssign<D6>; // expected-note {{here}}
template struct MoveOrCopyAssign<D6>; // expected-note {{here}}
template struct CopyAssign<D7>; // expected-note {{here}}
template struct MoveAssign<D7>; // expected-note {{here}}
template struct MoveOrCopyAssign<D7>; // expected-note {{here}}
template struct CopyAssign<D8>; // expected-note {{here}}
template struct MoveAssign<D8>; // expected-note {{here}}
template struct MoveOrCopyAssign<D8>; // expected-note {{here}}
// -- a direct or virtual base that cannot be copied/moved
struct E1 : AmbiguousCopyAssign {}; // expected-note {{base class 'AmbiguousCopyAssign' has multiple copy}}
struct E2 : AmbiguousMoveAssign { // expected-note {{base class 'AmbiguousMoveAssign' has multiple move}}
E2 &operator=(E2 &&) = default; // expected-note {{here}}
};
struct E3 : DeletedCopyAssign {}; // expected-note {{base class 'DeletedCopyAssign' has a deleted copy}}
struct E4 : DeletedMoveAssign { // expected-note {{base class 'DeletedMoveAssign' has a deleted move}}
E4 &operator=(E4 &&) = default; // expected-note {{here}}
};
struct E5 : InaccessibleCopyAssign {}; // expected-note {{base class 'InaccessibleCopyAssign' has an inaccessible copy}}
struct E6 : InaccessibleMoveAssign { // expected-note {{base class 'InaccessibleMoveAssign' has an inaccessible move}}
E6 &operator=(E6 &&) = default; // expected-note {{here}}
};
template struct CopyAssign<E1>; // expected-note {{here}}
template struct MoveAssign<E2>; // expected-note {{here}}
template struct CopyAssign<E3>; // expected-note {{here}}
template struct MoveAssign<E4>; // expected-note {{here}}
template struct CopyAssign<E5>; // expected-note {{here}}
template struct MoveAssign<E6>; // expected-note {{here}}
namespace PR13381 {
struct S {
S &operator=(const S&);
S &operator=(const volatile S&) volatile = delete; // expected-note{{deleted here}}
};
struct T {
volatile S s; // expected-note{{field 's' has a deleted copy assignment}}
};
void g() {
T t;
t = T(); // expected-error{{object of type 'T' cannot be assigned because its copy assignment operator is implicitly deleted}}
}
}
namespace Mutable {
struct AmbiguousCopyAssign {
AmbiguousCopyAssign &operator=(const AmbiguousCopyAssign &);
AmbiguousCopyAssign &operator=(volatile AmbiguousCopyAssign &);
};
struct X {
AmbiguousCopyAssign a;
};
struct Y {
mutable AmbiguousCopyAssign a; // expected-note {{multiple copy assignment operators}}
};
}
template struct CopyAssign<Mutable::X>;
template struct CopyAssign<Mutable::Y>; // expected-note {{here}}
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