forked from OSchip/llvm-project
416 lines
14 KiB
C++
416 lines
14 KiB
C++
// RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++2a -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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#if __cplusplus < 201103L
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// expected-error@+1 {{variadic macro}}
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#define static_assert(...) __extension__ _Static_assert(__VA_ARGS__)
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#endif
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#if __cplusplus >= 201103L
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namespace std {
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typedef decltype(sizeof(int)) size_t;
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template<typename E> class initializer_list {
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const E *begin;
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size_t size;
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public:
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initializer_list();
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};
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} // std
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#endif
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namespace dr1611 { // dr1611: dup 1658
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struct A { A(int); };
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struct B : virtual A { virtual void f() = 0; };
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struct C : B { C() : A(0) {} void f(); };
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C c;
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}
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namespace dr1684 { // dr1684: 3.6
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#if __cplusplus >= 201103L
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struct NonLiteral { // expected-note {{because}}
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NonLiteral();
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constexpr int f() { return 0; } // expected-warning 0-1{{will not be implicitly 'const'}}
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};
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constexpr int f(NonLiteral &) { return 0; }
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constexpr int f(NonLiteral) { return 0; } // expected-error {{not a literal type}}
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#endif
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}
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namespace dr1631 { // dr1631: 3.7
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#if __cplusplus >= 201103L
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// Incorrect overload resolution for single-element initializer-list
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struct A { int a[1]; };
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struct B { B(int); };
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void f(B, int);
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void f(B, int, int = 0);
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void f(int, A);
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void test() {
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f({0}, {{1}}); // expected-warning {{braces around scalar init}}
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}
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namespace with_error {
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void f(B, int); // TODO: expected- note {{candidate function}}
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void f(int, A); // expected-note {{candidate function}}
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void f(int, A, int = 0); // expected-note {{candidate function}}
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void test() {
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f({0}, {{1}}); // expected-error{{call to 'f' is ambiguous}}
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}
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}
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#endif
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}
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namespace dr1638 { // dr1638: yes
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#if __cplusplus >= 201103L
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template<typename T> struct A {
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enum class E; // expected-note {{previous}}
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enum class F : T; // expected-note 2{{previous}}
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};
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template<> enum class A<int>::E;
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template<> enum class A<int>::E {};
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template<> enum class A<int>::F : int;
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template<> enum class A<int>::F : int {};
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template<> enum class A<short>::E : int;
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template<> enum class A<short>::E : int {};
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template<> enum class A<short>::F; // expected-error {{different underlying type}}
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template<> enum class A<char>::E : char; // expected-error {{different underlying type}}
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template<> enum class A<char>::F : int; // expected-error {{different underlying type}}
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enum class A<unsigned>::E; // expected-error {{template specialization requires 'template<>'}} expected-error {{nested name specifier}}
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template enum class A<unsigned>::E; // expected-error {{enumerations cannot be explicitly instantiated}}
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enum class A<unsigned>::E *e; // expected-error {{must use 'enum' not 'enum class'}}
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struct B {
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friend enum class A<unsigned>::E; // expected-error {{must use 'enum' not 'enum class'}}
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};
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#endif
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}
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namespace dr1645 { // dr1645: 3.9
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#if __cplusplus >= 201103L
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struct A {
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constexpr A(int, float = 0); // expected-note 2{{candidate}}
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explicit A(int, int = 0); // expected-note 2{{candidate}}
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A(int, int, int = 0) = delete; // expected-note {{candidate}}
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};
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struct B : A { // expected-note 2{{candidate}}
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using A::A; // expected-note 5{{inherited here}}
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};
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constexpr B a(0); // expected-error {{ambiguous}}
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constexpr B b(0, 0); // expected-error {{ambiguous}}
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#endif
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}
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namespace dr1653 { // dr1653: 4 c++17
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void f(bool b) {
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++b;
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b++;
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#if __cplusplus <= 201402L
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// expected-warning@-3 {{deprecated}} expected-warning@-2 {{deprecated}}
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#else
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// expected-error@-5 {{incrementing expression of type bool}} expected-error@-4 {{incrementing expression of type bool}}
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#endif
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--b; // expected-error {{cannot decrement expression of type bool}}
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b--; // expected-error {{cannot decrement expression of type bool}}
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b += 1; // ok
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b -= 1; // ok
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}
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}
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namespace dr1658 { // dr1658: 5
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namespace DefCtor {
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class A { A(); }; // expected-note 0-2{{here}}
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class B { ~B(); }; // expected-note 0-2{{here}}
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// The stars align! An abstract class does not construct its virtual bases.
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struct C : virtual A { C(); virtual void foo() = 0; };
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C::C() = default; // ok, not deleted, expected-error 0-1{{extension}}
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struct D : virtual B { D(); virtual void foo() = 0; };
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D::D() = default; // ok, not deleted, expected-error 0-1{{extension}}
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// In all other cases, we are not so lucky.
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struct E : A { E(); virtual void foo() = 0; };
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#if __cplusplus < 201103L
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E::E() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}}
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#else
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E::E() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}}
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#endif
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struct F : virtual A { F(); };
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#if __cplusplus < 201103L
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F::F() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}}
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#else
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F::F() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}}
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#endif
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struct G : B { G(); virtual void foo() = 0; };
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#if __cplusplus < 201103L
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G::G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}}
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#else
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G::G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}}
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#endif
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struct H : virtual B { H(); };
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#if __cplusplus < 201103L
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H::H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}}
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#else
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H::H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}}
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#endif
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}
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namespace Dtor {
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class B { ~B(); }; // expected-note 0-2{{here}}
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struct D : virtual B { ~D(); virtual void foo() = 0; };
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D::~D() = default; // ok, not deleted, expected-error 0-1{{extension}}
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struct G : B { ~G(); virtual void foo() = 0; };
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#if __cplusplus < 201103L
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G::~G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}}
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#else
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G::~G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}}
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#endif
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struct H : virtual B { ~H(); };
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#if __cplusplus < 201103L
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H::~H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}}
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#else
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H::~H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}}
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#endif
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}
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namespace MemInit {
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struct A { A(int); }; // expected-note {{here}}
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struct B : virtual A {
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B() {}
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virtual void f() = 0;
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};
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struct C : virtual A {
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C() {} // expected-error {{must explicitly initialize}}
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};
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}
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namespace CopyCtorParamType {
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struct A { A(A&); };
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struct B : virtual A { virtual void f() = 0; };
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struct C : virtual A { virtual void f(); };
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struct D : A { virtual void f() = 0; };
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struct X {
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friend B::B(const B&) throw();
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friend C::C(C&);
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friend D::D(D&);
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};
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}
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namespace CopyCtor {
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class A { A(const A&); A(A&&); }; // expected-note 0-4{{here}} expected-error 0-1{{extension}}
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struct C : virtual A { C(const C&); C(C&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}}
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C::C(const C&) = default; // expected-error 0-1{{extension}}
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C::C(C&&) = default; // expected-error 0-2{{extension}}
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struct E : A { E(const E&); E(E&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}}
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#if __cplusplus < 201103L
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E::E(const E&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}}
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E::E(E&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}}
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#else
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E::E(const E&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}}
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E::E(E&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}}
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#endif
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struct F : virtual A { F(const F&); F(F&&); }; // expected-error 0-1{{extension}}
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#if __cplusplus < 201103L
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F::F(const F&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}}
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F::F(F&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}}
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#else
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F::F(const F&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}}
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F::F(F&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}}
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#endif
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}
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// assignment case is superseded by dr2180
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}
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namespace dr1672 { // dr1672: 7
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struct Empty {};
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struct A : Empty {};
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struct B { Empty e; };
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struct C : A { B b; int n; };
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struct D : A { int n; B b; };
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static_assert(!__is_standard_layout(C), "");
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static_assert(__is_standard_layout(D), "");
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struct E { B b; int n; };
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struct F { int n; B b; };
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union G { B b; int n; };
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union H { int n; B b; };
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struct X {};
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template<typename T> struct Y : X, A { T t; };
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static_assert(!__is_standard_layout(Y<E>), "");
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static_assert(__is_standard_layout(Y<F>), "");
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static_assert(!__is_standard_layout(Y<G>), "");
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static_assert(!__is_standard_layout(Y<H>), "");
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static_assert(!__is_standard_layout(Y<X>), "");
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}
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namespace dr1687 { // dr1687: 7
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template<typename T> struct To {
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operator T(); // expected-note 2{{first operand was implicitly converted to type 'int *'}}
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// expected-note@-1 {{second operand was implicitly converted to type 'double'}}
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#if __cplusplus > 201703L
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// expected-note@-3 2{{operand was implicitly converted to type 'dr1687::E}}
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#endif
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};
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int *a = To<int*>() + 100.0; // expected-error {{invalid operands to binary expression ('To<int *>' and 'double')}}
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int *b = To<int*>() + To<double>(); // expected-error {{invalid operands to binary expression ('To<int *>' and 'To<double>')}}
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#if __cplusplus > 201703L
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enum E1 {};
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enum E2 {};
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auto c = To<E1>() <=> To<E2>(); // expected-error {{invalid operands to binary expression ('To<dr1687::E1>' and 'To<dr1687::E2>')}}
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#endif
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}
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namespace dr1690 { // dr1690: 9
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// See also the various tests in "CXX/basic/basic.lookup/basic.lookup.argdep".
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#if __cplusplus >= 201103L
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namespace N {
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static auto lambda = []() { struct S {} s; return s; };
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void f(decltype(lambda()));
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}
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void test() {
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auto s = N::lambda();
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f(s); // ok
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}
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#endif
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}
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namespace dr1691 { // dr1691: 9
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#if __cplusplus >= 201103L
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namespace N {
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namespace M {
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enum E : int;
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void f(E);
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}
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enum M::E : int {};
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void g(M::E); // expected-note {{declared here}}
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}
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void test() {
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N::M::E e;
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f(e); // ok
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g(e); // expected-error {{use of undeclared}}
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}
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#endif
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}
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namespace dr1692 { // dr1692: 9
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namespace N {
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struct A {
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struct B {
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struct C {};
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};
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};
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void f(A::B::C);
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}
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void test() {
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N::A::B::C c;
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f(c); // ok
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}
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}
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namespace dr1696 { // dr1696: 7
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namespace std_examples {
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#if __cplusplus >= 201402L
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extern struct A a;
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struct A {
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const A &x = { A{a, a} };
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const A &y = { A{} }; // expected-error {{default member initializer for 'y' needed within definition of enclosing class 'A' outside of member functions}} expected-note {{here}}
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};
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A a{a, a};
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#endif
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}
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struct A { A(); ~A(); };
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#if __cplusplus >= 201103L
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struct B {
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A &&a; // expected-note {{declared here}}
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B() : a{} {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}}
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} b;
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#endif
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struct C {
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C();
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const A &a; // expected-note {{declared here}}
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};
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C::C() : a(A()) {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}}
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#if __cplusplus >= 201103L
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// This is OK in C++14 onwards, per DR1815, though we don't support that yet:
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// D1 d1 = {};
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// is equivalent to
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// D1 d1 = {A()};
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// ... which lifetime-extends the A temporary.
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struct D1 {
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#if __cplusplus < 201402L
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// expected-error@-2 {{binds to a temporary}}
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#endif
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const A &a = A(); // expected-note {{default member init}}
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};
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D1 d1 = {};
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#if __cplusplus < 201402L
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// expected-note@-2 {{first required here}}
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#else
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// expected-warning-re@-4 {{sorry, lifetime extension {{.*}} not supported}}
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#endif
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struct D2 {
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const A &a = A(); // expected-note {{default member init}}
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D2() {} // expected-error {{binds to a temporary}}
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};
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struct D3 { // expected-error {{binds to a temporary}}
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const A &a = A(); // expected-note {{default member init}}
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};
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D3 d3; // expected-note {{first required here}}
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struct haslist1 {
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std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}}
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haslist1(int i) : il{i, 2, 3} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}}
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};
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struct haslist2 {
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std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}}
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haslist2();
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};
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haslist2::haslist2() : il{1, 2} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}}
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struct haslist3 {
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std::initializer_list<int> il = {1, 2, 3};
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};
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struct haslist4 { // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}}
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std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}}
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};
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haslist4 hl4; // expected-note {{in implicit default constructor}}
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struct haslist5 {
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std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}}
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haslist5() {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}}
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};
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#endif
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}
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