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// 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++1z -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
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>), "");
}
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