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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
// Tests for implicit (non-)declaration of move constructor and
// assignment: p9, p11, p20, p23.
// This class, used as a member, allows to distinguish move from copy because
// move operations are no-throw, copy operations aren't.
struct ThrowingCopy {
ThrowingCopy() noexcept;
ThrowingCopy(ThrowingCopy &&) noexcept;
ThrowingCopy(const ThrowingCopy &) noexcept(false);
ThrowingCopy & operator =(ThrowingCopy &&) noexcept;
ThrowingCopy & operator =(const ThrowingCopy &) noexcept(false);
};
struct HasCopyConstructor {
ThrowingCopy tc;
HasCopyConstructor() noexcept;
HasCopyConstructor(const HasCopyConstructor &) noexcept(false);
};
struct HasCopyAssignment {
ThrowingCopy tc;
HasCopyAssignment() noexcept;
HasCopyAssignment & operator =(const HasCopyAssignment &) noexcept(false);
};
struct HasMoveConstructor {
ThrowingCopy tc;
HasMoveConstructor() noexcept;
HasMoveConstructor(HasMoveConstructor &&) noexcept; // expected-note {{copy assignment operator is implicitly deleted because 'HasMoveConstructor' has a user-declared move constructor}}
};
struct HasMoveAssignment { // expected-note {{implicit copy constructor}}
ThrowingCopy tc;
HasMoveAssignment() noexcept;
HasMoveAssignment & operator =(HasMoveAssignment &&) noexcept;
};
struct HasDestructor {
ThrowingCopy tc;
HasDestructor() noexcept;
~HasDestructor() noexcept;
};
void test_basic_exclusion() {
static_assert(!noexcept(HasCopyConstructor((HasCopyConstructor()))), "");
HasCopyConstructor hcc;
static_assert(!noexcept(hcc = HasCopyConstructor()), "");
static_assert(!noexcept(HasCopyAssignment((HasCopyAssignment()))), "");
HasCopyAssignment hca;
static_assert(!noexcept(hca = HasCopyAssignment()), "");
static_assert(noexcept(HasMoveConstructor((HasMoveConstructor()))), "");
HasMoveConstructor hmc;
hmc = HasMoveConstructor(); // expected-error {{selected implicitly-deleted copy assignment}}
(HasMoveAssignment(HasMoveAssignment())); // expected-error {{uses deleted function}}
HasMoveAssignment hma;
static_assert(noexcept(hma = HasMoveAssignment()), "");
static_assert(!noexcept(HasDestructor((HasDestructor()))), "");
HasDestructor hd;
static_assert(!noexcept(hd = HasDestructor()), "");
}
struct PrivateMove {
PrivateMove() noexcept;
PrivateMove(const PrivateMove &) noexcept(false);
PrivateMove & operator =(const PrivateMove &) noexcept(false);
private:
PrivateMove(PrivateMove &&) noexcept;
PrivateMove & operator =(PrivateMove &&) noexcept;
};
struct InheritsPrivateMove : PrivateMove {};
struct ContainsPrivateMove {
PrivateMove pm;
};
struct PrivateDestructor {
PrivateDestructor() noexcept;
PrivateDestructor(const PrivateDestructor &) noexcept(false);
PrivateDestructor(PrivateDestructor &&) noexcept;
private:
~PrivateDestructor() noexcept;
};
struct InheritsPrivateDestructor : PrivateDestructor {}; // expected-note{{base class 'PrivateDestructor' has an inaccessible destructor}}
struct ContainsPrivateDestructor {
PrivateDestructor pd; // expected-note{{field 'pd' has an inaccessible destructor}}
};
struct NonTrivialCopyOnly {
NonTrivialCopyOnly() noexcept;
NonTrivialCopyOnly(const NonTrivialCopyOnly &) noexcept(false);
NonTrivialCopyOnly & operator =(const NonTrivialCopyOnly &) noexcept(false);
};
struct InheritsNonTrivialCopyOnly : NonTrivialCopyOnly {};
struct ContainsNonTrivialCopyOnly {
NonTrivialCopyOnly ntco;
};
struct ContainsConst {
const int i;
ContainsConst() noexcept;
ContainsConst & operator =(ContainsConst &); // expected-note {{not viable}}
};
struct ContainsRef {
int &i;
ContainsRef() noexcept;
ContainsRef & operator =(ContainsRef &); // expected-note {{not viable}}
};
struct Base {
Base & operator =(Base &);
};
struct DirectVirtualBase : virtual Base {}; // expected-note {{copy assignment operator) not viable}}
struct IndirectVirtualBase : DirectVirtualBase {}; // expected-note {{copy assignment operator) not viable}}
void test_deletion_exclusion() {
// FIXME: How to test the union thing?
static_assert(!noexcept(InheritsPrivateMove(InheritsPrivateMove())), "");
static_assert(!noexcept(ContainsPrivateMove(ContainsPrivateMove())), "");
InheritsPrivateMove ipm;
static_assert(!noexcept(ipm = InheritsPrivateMove()), "");
ContainsPrivateMove cpm;
static_assert(!noexcept(cpm = ContainsPrivateMove()), "");
(InheritsPrivateDestructor(InheritsPrivateDestructor())); // expected-error {{call to implicitly-deleted default constructor}}
(ContainsPrivateDestructor(ContainsPrivateDestructor())); // expected-error {{call to implicitly-deleted default constructor}}
static_assert(!noexcept(InheritsNonTrivialCopyOnly(InheritsNonTrivialCopyOnly())), "");
static_assert(!noexcept(ContainsNonTrivialCopyOnly(ContainsNonTrivialCopyOnly())), "");
InheritsNonTrivialCopyOnly intco;
static_assert(!noexcept(intco = InheritsNonTrivialCopyOnly()), "");
ContainsNonTrivialCopyOnly cntco;
static_assert(!noexcept(cntco = ContainsNonTrivialCopyOnly()), "");
ContainsConst cc;
cc = ContainsConst(); // expected-error {{no viable}}
ContainsRef cr;
cr = ContainsRef(); // expected-error {{no viable}}
DirectVirtualBase dvb;
dvb = DirectVirtualBase(); // expected-error {{no viable}}
IndirectVirtualBase ivb;
ivb = IndirectVirtualBase(); // expected-error {{no viable}}
}
struct ContainsRValueRef {
int&& ri;
ContainsRValueRef() noexcept;
};
void test_contains_rref() {
(ContainsRValueRef(ContainsRValueRef()));
}
namespace DR1402 {
struct NonTrivialCopyCtor {
NonTrivialCopyCtor(const NonTrivialCopyCtor &);
};
struct NonTrivialCopyAssign {
NonTrivialCopyAssign &operator=(const NonTrivialCopyAssign &);
};
struct NonTrivialCopyCtorVBase : virtual NonTrivialCopyCtor {
NonTrivialCopyCtorVBase(NonTrivialCopyCtorVBase &&);
NonTrivialCopyCtorVBase &operator=(NonTrivialCopyCtorVBase &&) = default;
};
struct NonTrivialCopyAssignVBase : virtual NonTrivialCopyAssign {
NonTrivialCopyAssignVBase(NonTrivialCopyAssignVBase &&);
NonTrivialCopyAssignVBase &operator=(NonTrivialCopyAssignVBase &&) = default;
};
struct NonTrivialMoveAssign {
NonTrivialMoveAssign(NonTrivialMoveAssign&&);
NonTrivialMoveAssign &operator=(NonTrivialMoveAssign &&);
};
struct NonTrivialMoveAssignVBase : virtual NonTrivialMoveAssign {
NonTrivialMoveAssignVBase(NonTrivialMoveAssignVBase &&);
NonTrivialMoveAssignVBase &operator=(NonTrivialMoveAssignVBase &&) = default;
};
// A non-movable, non-trivially-copyable class type as a subobject inhibits
// the declaration of a move operation.
struct NoMove1 { NonTrivialCopyCtor ntcc; }; // expected-note 2{{'const DR1402::NoMove1 &'}}
struct NoMove2 { NonTrivialCopyAssign ntcc; }; // expected-note 2{{'const DR1402::NoMove2 &'}}
struct NoMove3 : NonTrivialCopyCtor {}; // expected-note 2{{'const DR1402::NoMove3 &'}}
struct NoMove4 : NonTrivialCopyAssign {}; // expected-note 2{{'const DR1402::NoMove4 &'}}
struct NoMove5 : virtual NonTrivialCopyCtor {}; // expected-note 2{{'const DR1402::NoMove5 &'}}
struct NoMove6 : virtual NonTrivialCopyAssign {}; // expected-note 2{{'const DR1402::NoMove6 &'}}
struct NoMove7 : NonTrivialCopyCtorVBase {}; // expected-note 2{{'const DR1402::NoMove7 &'}}
struct NoMove8 : NonTrivialCopyAssignVBase {}; // expected-note 2{{'const DR1402::NoMove8 &'}}
// A non-trivially-move-assignable virtual base class inhibits the declaration
// of a move assignment (which might move-assign the base class multiple
// times).
struct NoMove9 : NonTrivialMoveAssign {};
struct NoMove10 : virtual NonTrivialMoveAssign {}; // expected-note {{'const DR1402::NoMove10 &'}}
struct NoMove11 : NonTrivialMoveAssignVBase {}; // expected-note {{'const DR1402::NoMove11 &'}}
struct Test {
friend NoMove1::NoMove1(NoMove1 &&); // expected-error {{no matching function}}
friend NoMove2::NoMove2(NoMove2 &&); // expected-error {{no matching function}}
friend NoMove3::NoMove3(NoMove3 &&); // expected-error {{no matching function}}
friend NoMove4::NoMove4(NoMove4 &&); // expected-error {{no matching function}}
friend NoMove5::NoMove5(NoMove5 &&); // expected-error {{no matching function}}
friend NoMove6::NoMove6(NoMove6 &&); // expected-error {{no matching function}}
friend NoMove7::NoMove7(NoMove7 &&); // expected-error {{no matching function}}
friend NoMove8::NoMove8(NoMove8 &&); // expected-error {{no matching function}}
friend NoMove9::NoMove9(NoMove9 &&);
friend NoMove10::NoMove10(NoMove10 &&);
friend NoMove11::NoMove11(NoMove11 &&);
friend NoMove1 &NoMove1::operator=(NoMove1 &&); // expected-error {{no matching function}}
friend NoMove2 &NoMove2::operator=(NoMove2 &&); // expected-error {{no matching function}}
friend NoMove3 &NoMove3::operator=(NoMove3 &&); // expected-error {{no matching function}}
friend NoMove4 &NoMove4::operator=(NoMove4 &&); // expected-error {{no matching function}}
friend NoMove5 &NoMove5::operator=(NoMove5 &&); // expected-error {{no matching function}}
friend NoMove6 &NoMove6::operator=(NoMove6 &&); // expected-error {{no matching function}}
friend NoMove7 &NoMove7::operator=(NoMove7 &&); // expected-error {{no matching function}}
friend NoMove8 &NoMove8::operator=(NoMove8 &&); // expected-error {{no matching function}}
friend NoMove9 &NoMove9::operator=(NoMove9 &&);
friend NoMove10 &NoMove10::operator=(NoMove10 &&); // expected-error {{no matching function}}
friend NoMove11 &NoMove11::operator=(NoMove11 &&); // expected-error {{no matching function}}
};
}
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