diff options
Diffstat (limited to 'clang/test/CXX/special/class.copy/p11.0x.move.cpp')
-rw-r--r-- | clang/test/CXX/special/class.copy/p11.0x.move.cpp | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/clang/test/CXX/special/class.copy/p11.0x.move.cpp b/clang/test/CXX/special/class.copy/p11.0x.move.cpp new file mode 100644 index 0000000..ff9478b --- /dev/null +++ b/clang/test/CXX/special/class.copy/p11.0x.move.cpp @@ -0,0 +1,164 @@ +// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s + +struct NonTrivial { + NonTrivial(NonTrivial&&); +}; + +// A defaulted move constructor for a class X is defined as deleted if X has: + +// -- a variant member with a non-trivial corresponding constructor +union DeletedNTVariant { + NonTrivial NT; + DeletedNTVariant(DeletedNTVariant&&); +}; +DeletedNTVariant::DeletedNTVariant(DeletedNTVariant&&) = default; // expected-error{{would delete}} + +struct DeletedNTVariant2 { + union { + NonTrivial NT; + }; + DeletedNTVariant2(DeletedNTVariant2&&); +}; +DeletedNTVariant2::DeletedNTVariant2(DeletedNTVariant2&&) = default; // expected-error{{would delete}} + +// -- a non-static data member of class type M (or array thereof) that cannot be +// copied because overload resolution results in an ambiguity or a function +// that is deleted or inaccessible +struct NoAccess { + NoAccess() = default; +private: + NoAccess(NoAccess&&); + + friend struct HasAccess; +}; + +struct HasNoAccess { + NoAccess NA; + HasNoAccess(HasNoAccess&&); +}; +HasNoAccess::HasNoAccess(HasNoAccess&&) = default; // expected-error{{would delete}} + +struct HasAccess { + NoAccess NA; + HasAccess(HasAccess&&); +}; +HasAccess::HasAccess(HasAccess&&) = default; + +struct Ambiguity { + Ambiguity(const Ambiguity&&); + Ambiguity(volatile Ambiguity&&); +}; + +struct IsAmbiguous { + Ambiguity A; + IsAmbiguous(IsAmbiguous&&); +}; +IsAmbiguous::IsAmbiguous(IsAmbiguous&&) = default; // expected-error{{would delete}} + +struct Deleted { + IsAmbiguous IA; + Deleted(Deleted&&); +}; +Deleted::Deleted(Deleted&&) = default; // expected-error{{would delete}} + +// -- a direct or virtual base class B that cannot be moved because overload +// resolution results in an ambiguity or a function that is deleted or +// inaccessible +struct AmbiguousMoveBase : Ambiguity { + AmbiguousMoveBase(AmbiguousMoveBase&&); +}; +AmbiguousMoveBase::AmbiguousMoveBase(AmbiguousMoveBase&&) = default; // expected-error{{would delete}} + +struct DeletedMoveBase : AmbiguousMoveBase { + DeletedMoveBase(DeletedMoveBase&&); +}; +DeletedMoveBase::DeletedMoveBase(DeletedMoveBase&&) = default; // expected-error{{would delete}} + +struct InaccessibleMoveBase : NoAccess { + InaccessibleMoveBase(InaccessibleMoveBase&&); +}; +InaccessibleMoveBase::InaccessibleMoveBase(InaccessibleMoveBase&&) = default; // expected-error{{would delete}} + +// -- any direct or virtual base class or non-static data member of a type with +// a destructor that is deleted or inaccessible +struct NoAccessDtor { + NoAccessDtor(NoAccessDtor&&); // expected-note{{copy constructor is implicitly deleted because 'NoAccessDtor' has a user-declared move constructor}} +private: + ~NoAccessDtor(); + friend struct HasAccessDtor; +}; + +struct HasNoAccessDtor { + NoAccessDtor NAD; + HasNoAccessDtor(HasNoAccessDtor&&); +}; +HasNoAccessDtor::HasNoAccessDtor(HasNoAccessDtor&&) = default; // expected-error{{would delete}} + +struct HasAccessDtor { + NoAccessDtor NAD; + HasAccessDtor(HasAccessDtor&&); +}; +HasAccessDtor::HasAccessDtor(HasAccessDtor&&) = default; + +struct HasNoAccessDtorBase : NoAccessDtor { // expected-note{{copy constructor of 'HasNoAccessDtorBase' is implicitly deleted because base class 'NoAccessDtor' has a deleted copy constructor}} +}; +extern HasNoAccessDtorBase HNADBa; +HasNoAccessDtorBase HNADBb(HNADBa); // expected-error{{implicitly-deleted copy constructor}} + +// The restriction on rvalue reference members applies to only the copy +// constructor. +struct RValue { + int &&ri = 1; + RValue(RValue&&); +}; +RValue::RValue(RValue&&) = default; + +// -- a non-static data member or direct or virtual base class with a type that +// does not have a move constructor and is not trivially copyable +struct CopyOnly { + CopyOnly(const CopyOnly&); +}; + +struct NonMove { + CopyOnly CO; + NonMove(NonMove&&); +}; +NonMove::NonMove(NonMove&&) = default; // ok under DR1402 + +struct Moveable { + Moveable(); + Moveable(Moveable&&); +}; + +struct HasMove { + Moveable M; + HasMove(HasMove&&); +}; +HasMove::HasMove(HasMove&&) = default; + +namespace DR1402 { + struct member { + member(); + member(const member&); + member& operator=(const member&); + ~member(); + }; + + struct A { + member m_; + + A() = default; + A(const A&) = default; + A& operator=(const A&) = default; + A(A&&) = default; + A& operator=(A&&) = default; + ~A() = default; + }; + + // ok, A's explicitly-defaulted move operations copy m_. + void f() { + A a, b(a), c(static_cast<A&&>(a)); + a = b; + b = static_cast<A&&>(c); + } +} |