| // RUN: %clang_cc1 -std=c++98 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| // RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| // RUN: %clang_cc1 -std=c++14 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| // RUN: %clang_cc1 -std=c++17 -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| // RUN: %clang_cc1 -std=c++2a -triple x86_64-unknown-unknown %s -verify -fexceptions -fcxx-exceptions -pedantic-errors |
| |
| #if __cplusplus < 201103L |
| // expected-error@+1 {{variadic macro}} |
| #define static_assert(...) __extension__ _Static_assert(__VA_ARGS__) |
| #endif |
| |
| #if __cplusplus >= 201103L |
| namespace std { |
| typedef decltype(sizeof(int)) size_t; |
| |
| template<typename E> class initializer_list { |
| const E *begin; |
| size_t size; |
| |
| public: |
| initializer_list(); |
| }; |
| } // std |
| #endif |
| |
| namespace dr1601 { // dr1601: 10 |
| enum E : char { e }; |
| #if __cplusplus < 201103L |
| // expected-error@-2 {{enumeration types with a fixed underlying type are a C++11 extension}} |
| #endif |
| void f(char); |
| void f(int); |
| void g() { |
| f(e); |
| } |
| } // namespace dr1601 |
| |
| namespace dr1611 { // dr1611: dup 1658 |
| struct A { A(int); }; |
| struct B : virtual A { virtual void f() = 0; }; |
| struct C : B { C() : A(0) {} void f(); }; |
| C c; |
| } |
| |
| namespace dr1684 { // dr1684: 3.6 |
| #if __cplusplus >= 201103L |
| struct NonLiteral { // expected-note {{because}} |
| NonLiteral(); |
| constexpr int f() { return 0; } // expected-warning 0-1{{will not be implicitly 'const'}} |
| }; |
| constexpr int f(NonLiteral &) { return 0; } |
| constexpr int f(NonLiteral) { return 0; } // expected-error {{not a literal type}} |
| #endif |
| } |
| |
| namespace dr1631 { // dr1631: 3.7 |
| #if __cplusplus >= 201103L |
| // Incorrect overload resolution for single-element initializer-list |
| |
| struct A { int a[1]; }; |
| struct B { B(int); }; |
| void f(B, int); |
| void f(B, int, int = 0); |
| void f(int, A); |
| |
| void test() { |
| f({0}, {{1}}); // expected-warning {{braces around scalar init}} |
| } |
| |
| namespace with_error { |
| void f(B, int); // TODO: expected- note {{candidate function}} |
| void f(int, A); // expected-note {{candidate function}} |
| void f(int, A, int = 0); // expected-note {{candidate function}} |
| |
| void test() { |
| f({0}, {{1}}); // expected-error{{call to 'f' is ambiguous}} |
| } |
| } |
| #endif |
| } |
| |
| namespace dr1638 { // dr1638: yes |
| #if __cplusplus >= 201103L |
| template<typename T> struct A { |
| enum class E; // expected-note {{previous}} |
| enum class F : T; // expected-note 2{{previous}} |
| }; |
| |
| template<> enum class A<int>::E; |
| template<> enum class A<int>::E {}; |
| template<> enum class A<int>::F : int; |
| template<> enum class A<int>::F : int {}; |
| |
| template<> enum class A<short>::E : int; |
| template<> enum class A<short>::E : int {}; |
| |
| template<> enum class A<short>::F; // expected-error {{different underlying type}} |
| template<> enum class A<char>::E : char; // expected-error {{different underlying type}} |
| template<> enum class A<char>::F : int; // expected-error {{different underlying type}} |
| |
| enum class A<unsigned>::E; // expected-error {{template specialization requires 'template<>'}} expected-error {{nested name specifier}} |
| template enum class A<unsigned>::E; // expected-error {{enumerations cannot be explicitly instantiated}} |
| enum class A<unsigned>::E *e; // expected-error {{must use 'enum' not 'enum class'}} |
| |
| struct B { |
| friend enum class A<unsigned>::E; // expected-error {{must use 'enum' not 'enum class'}} |
| }; |
| #endif |
| } |
| |
| namespace dr1645 { // dr1645: 3.9 |
| #if __cplusplus >= 201103L |
| struct A { |
| constexpr A(int, float = 0); // expected-note 2{{candidate}} |
| explicit A(int, int = 0); // expected-note 2{{candidate}} |
| A(int, int, int = 0) = delete; // expected-note {{candidate}} |
| }; |
| |
| struct B : A { // expected-note 2{{candidate}} |
| using A::A; // expected-note 5{{inherited here}} |
| }; |
| |
| constexpr B a(0); // expected-error {{ambiguous}} |
| constexpr B b(0, 0); // expected-error {{ambiguous}} |
| #endif |
| } |
| |
| namespace dr1653 { // dr1653: 4 c++17 |
| void f(bool b) { |
| ++b; |
| b++; |
| #if __cplusplus <= 201402L |
| // expected-warning@-3 {{deprecated}} expected-warning@-2 {{deprecated}} |
| #else |
| // expected-error@-5 {{incrementing expression of type bool}} expected-error@-4 {{incrementing expression of type bool}} |
| #endif |
| --b; // expected-error {{cannot decrement expression of type bool}} |
| b--; // expected-error {{cannot decrement expression of type bool}} |
| b += 1; // ok |
| b -= 1; // ok |
| } |
| } |
| |
| namespace dr1658 { // dr1658: 5 |
| namespace DefCtor { |
| class A { A(); }; // expected-note 0-2{{here}} |
| class B { ~B(); }; // expected-note 0-2{{here}} |
| |
| // The stars align! An abstract class does not construct its virtual bases. |
| struct C : virtual A { C(); virtual void foo() = 0; }; |
| C::C() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| struct D : virtual B { D(); virtual void foo() = 0; }; |
| D::D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| |
| // In all other cases, we are not so lucky. |
| struct E : A { E(); virtual void foo() = 0; }; |
| #if __cplusplus < 201103L |
| E::E() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| E::E() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
| #endif |
| struct F : virtual A { F(); }; |
| #if __cplusplus < 201103L |
| F::F() = default; // expected-error {{private default constructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| F::F() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible default constructor}} |
| #endif |
| |
| struct G : B { G(); virtual void foo() = 0; }; |
| #if __cplusplus < 201103L |
| G::G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| G::G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| #endif |
| struct H : virtual B { H(); }; |
| #if __cplusplus < 201103L |
| H::H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| H::H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| #endif |
| } |
| |
| namespace Dtor { |
| class B { ~B(); }; // expected-note 0-2{{here}} |
| |
| struct D : virtual B { ~D(); virtual void foo() = 0; }; |
| D::~D() = default; // ok, not deleted, expected-error 0-1{{extension}} |
| |
| struct G : B { ~G(); virtual void foo() = 0; }; |
| #if __cplusplus < 201103L |
| G::~G() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| G::~G() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| #endif |
| struct H : virtual B { ~H(); }; |
| #if __cplusplus < 201103L |
| H::~H() = default; // expected-error@-2 {{private destructor}} expected-error {{extension}} expected-note {{here}} |
| #else |
| H::~H() = default; // expected-error {{would delete}} expected-note@-4{{inaccessible destructor}} |
| #endif |
| } |
| |
| namespace MemInit { |
| struct A { A(int); }; // expected-note {{here}} |
| struct B : virtual A { |
| B() {} |
| virtual void f() = 0; |
| }; |
| struct C : virtual A { |
| C() {} // expected-error {{must explicitly initialize}} |
| }; |
| } |
| |
| namespace CopyCtorParamType { |
| struct A { A(A&); }; |
| struct B : virtual A { virtual void f() = 0; }; |
| struct C : virtual A { virtual void f(); }; |
| struct D : A { virtual void f() = 0; }; |
| |
| struct X { |
| friend B::B(const B&) throw(); |
| friend C::C(C&); |
| friend D::D(D&); |
| }; |
| } |
| |
| namespace CopyCtor { |
| class A { A(const A&); A(A&&); }; // expected-note 0-4{{here}} expected-error 0-1{{extension}} |
| |
| struct C : virtual A { C(const C&); C(C&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
| C::C(const C&) = default; // expected-error 0-1{{extension}} |
| C::C(C&&) = default; // expected-error 0-2{{extension}} |
| |
| struct E : A { E(const E&); E(E&&); virtual void foo() = 0; }; // expected-error 0-1{{extension}} |
| #if __cplusplus < 201103L |
| E::E(const E&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
| E::E(E&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
| #else |
| E::E(const E&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
| E::E(E&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
| #endif |
| struct F : virtual A { F(const F&); F(F&&); }; // expected-error 0-1{{extension}} |
| #if __cplusplus < 201103L |
| F::F(const F&) = default; // expected-error {{private copy constructor}} expected-error {{extension}} expected-note {{here}} |
| F::F(F&&) = default; // expected-error {{private move constructor}} expected-error 2{{extension}} expected-note {{here}} |
| #else |
| F::F(const F&) = default; // expected-error {{would delete}} expected-note@-5{{inaccessible copy constructor}} |
| F::F(F&&) = default; // expected-error {{would delete}} expected-note@-6{{inaccessible move constructor}} |
| #endif |
| } |
| |
| // assignment case is superseded by dr2180 |
| } |
| |
| namespace dr1672 { // dr1672: 7 |
| struct Empty {}; |
| struct A : Empty {}; |
| struct B { Empty e; }; |
| struct C : A { B b; int n; }; |
| struct D : A { int n; B b; }; |
| |
| static_assert(!__is_standard_layout(C), ""); |
| static_assert(__is_standard_layout(D), ""); |
| |
| struct E { B b; int n; }; |
| struct F { int n; B b; }; |
| union G { B b; int n; }; |
| union H { int n; B b; }; |
| |
| struct X {}; |
| template<typename T> struct Y : X, A { T t; }; |
| |
| static_assert(!__is_standard_layout(Y<E>), ""); |
| static_assert(__is_standard_layout(Y<F>), ""); |
| static_assert(!__is_standard_layout(Y<G>), ""); |
| static_assert(!__is_standard_layout(Y<H>), ""); |
| static_assert(!__is_standard_layout(Y<X>), ""); |
| } |
| |
| namespace dr1687 { // dr1687: 7 |
| template<typename T> struct To { |
| operator T(); // expected-note 2{{first operand was implicitly converted to type 'int *'}} |
| // expected-note@-1 {{second operand was implicitly converted to type 'double'}} |
| #if __cplusplus > 201703L |
| // expected-note@-3 2{{operand was implicitly converted to type 'dr1687::E}} |
| #endif |
| }; |
| |
| int *a = To<int*>() + 100.0; // expected-error {{invalid operands to binary expression ('To<int *>' and 'double')}} |
| int *b = To<int*>() + To<double>(); // expected-error {{invalid operands to binary expression ('To<int *>' and 'To<double>')}} |
| |
| #if __cplusplus > 201703L |
| enum E1 {}; |
| enum E2 {}; |
| auto c = To<E1>() <=> To<E2>(); // expected-error {{invalid operands to binary expression ('To<dr1687::E1>' and 'To<dr1687::E2>')}} |
| #endif |
| } |
| |
| namespace dr1690 { // dr1690: 9 |
| // See also the various tests in "CXX/basic/basic.lookup/basic.lookup.argdep". |
| #if __cplusplus >= 201103L |
| namespace N { |
| static auto lambda = []() { struct S {} s; return s; }; |
| void f(decltype(lambda())); |
| } |
| |
| void test() { |
| auto s = N::lambda(); |
| f(s); // ok |
| } |
| #endif |
| } |
| |
| namespace dr1691 { // dr1691: 9 |
| #if __cplusplus >= 201103L |
| namespace N { |
| namespace M { |
| enum E : int; |
| void f(E); |
| } |
| enum M::E : int {}; |
| void g(M::E); // expected-note {{declared here}} |
| } |
| void test() { |
| N::M::E e; |
| f(e); // ok |
| g(e); // expected-error {{use of undeclared}} |
| } |
| #endif |
| } |
| |
| namespace dr1692 { // dr1692: 9 |
| namespace N { |
| struct A { |
| struct B { |
| struct C {}; |
| }; |
| }; |
| void f(A::B::C); |
| } |
| void test() { |
| N::A::B::C c; |
| f(c); // ok |
| } |
| } |
| |
| namespace dr1696 { // dr1696: 7 |
| namespace std_examples { |
| #if __cplusplus >= 201402L |
| extern struct A a; |
| struct A { |
| const A &x = { A{a, a} }; |
| 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}} |
| }; |
| A a{a, a}; |
| #endif |
| } |
| |
| struct A { A(); ~A(); }; |
| #if __cplusplus >= 201103L |
| struct B { |
| A &&a; // expected-note {{declared here}} |
| B() : a{} {} // expected-error {{reference member 'a' binds to a temporary object whose lifetime would be shorter than the lifetime of the constructed object}} |
| } b; |
| #endif |
| |
| struct C { |
| C(); |
| const A &a; // expected-note {{declared here}} |
| }; |
| 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}} |
| |
| #if __cplusplus >= 201103L |
| // This is OK in C++14 onwards, per DR1815, though we don't support that yet: |
| // D1 d1 = {}; |
| // is equivalent to |
| // D1 d1 = {A()}; |
| // ... which lifetime-extends the A temporary. |
| struct D1 { |
| #if __cplusplus < 201402L |
| // expected-error@-2 {{binds to a temporary}} |
| #endif |
| const A &a = A(); // expected-note {{default member init}} |
| }; |
| D1 d1 = {}; |
| #if __cplusplus < 201402L |
| // expected-note@-2 {{first required here}} |
| #else |
| // expected-warning-re@-4 {{sorry, lifetime extension {{.*}} not supported}} |
| #endif |
| |
| struct D2 { |
| const A &a = A(); // expected-note {{default member init}} |
| D2() {} // expected-error {{binds to a temporary}} |
| }; |
| |
| struct D3 { // expected-error {{binds to a temporary}} |
| const A &a = A(); // expected-note {{default member init}} |
| }; |
| D3 d3; // expected-note {{first required here}} |
| |
| struct haslist1 { |
| std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
| haslist1(int i) : il{i, 2, 3} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| }; |
| |
| struct haslist2 { |
| std::initializer_list<int> il; // expected-note {{'std::initializer_list' member}} |
| haslist2(); |
| }; |
| haslist2::haslist2() : il{1, 2} {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| |
| struct haslist3 { |
| std::initializer_list<int> il = {1, 2, 3}; |
| }; |
| |
| struct haslist4 { // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
| }; |
| haslist4 hl4; // expected-note {{in implicit default constructor}} |
| |
| struct haslist5 { |
| std::initializer_list<int> il = {1, 2, 3}; // expected-note {{default member initializer}} |
| haslist5() {} // expected-error {{backing array for 'std::initializer_list' member 'il' is a temporary object}} |
| }; |
| #endif |
| } |