forked from OSchip/llvm-project
217 lines
5.8 KiB
C++
217 lines
5.8 KiB
C++
// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++1z %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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namespace std { struct type_info; }
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namespace dr1902 { // dr1902: 3.7
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struct A {};
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struct B {
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B(A);
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#if __cplusplus >= 201103L
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// expected-note@-2 {{candidate}}
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#endif
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B() = delete;
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#if __cplusplus < 201103L
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// expected-error@-2 {{extension}}
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#endif
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B(const B&) // expected-note {{deleted here}}
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#if __cplusplus >= 201103L
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// expected-note@-2 {{candidate}}
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#else
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// expected-error@+2 {{extension}}
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#endif
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= delete;
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operator A();
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};
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extern B b1;
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B b2(b1); // expected-error {{call to deleted}}
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#if __cplusplus >= 201103L
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// This is ambiguous, even though calling the B(const B&) constructor would
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// both directly and indirectly call a deleted function.
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B b({}); // expected-error {{ambiguous}}
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#endif
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}
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namespace dr1903 {
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namespace A {
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struct a {};
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int a;
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namespace B {
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int b;
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}
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using namespace B;
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namespace {
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int c;
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}
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namespace D {
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int d;
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}
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using D::d;
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}
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namespace X {
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using A::a;
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using A::b;
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using A::c;
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using A::d;
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struct a *p;
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}
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}
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namespace dr1909 { // dr1909: yes
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struct A {
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template<typename T> struct A {}; // expected-error {{member 'A' has the same name as its class}}
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};
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struct B {
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template<typename T> void B() {} // expected-error {{constructor cannot have a return type}}
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};
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struct C {
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template<typename T> static int C; // expected-error {{member 'C' has the same name as its class}} expected-error 0-1{{extension}}
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};
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struct D {
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template<typename T> using D = int; // expected-error {{member 'D' has the same name as its class}} expected-error 0-1{{extension}}
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};
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}
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namespace dr1940 { // dr1940: yes
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#if __cplusplus >= 201103L
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static union {
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static_assert(true, ""); // ok
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static_assert(false, ""); // expected-error {{static_assert failed}}
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int not_empty;
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};
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#endif
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}
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namespace dr1941 { // dr1941: 3.9
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#if __cplusplus >= 201402L
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template<typename X>
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struct base {
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template<typename T>
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base(T a, T b, decltype(void(*T()), 0) = 0) {
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while (a != b) (void)*a++;
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}
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template<typename T>
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base(T a, X x, decltype(void(T(0) * 1), 0) = 0) {
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for (T n = 0; n != a; ++n) (void)X(x);
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}
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};
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struct derived : base<int> {
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using base::base;
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};
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struct iter {
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iter operator++(int);
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int operator*();
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friend bool operator!=(iter, iter);
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} it, end;
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derived d1(it, end);
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derived d2(42, 9);
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#endif
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}
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namespace dr1947 { // dr1947: yes
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#if __cplusplus >= 201402L
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unsigned o = 0'01; // ok
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unsigned b = 0b'01; // expected-error {{invalid digit 'b' in octal constant}}
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unsigned x = 0x'01; // expected-error {{invalid suffix 'x'01' on integer constant}}
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#endif
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}
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#if __cplusplus >= 201103L
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// dr1948: yes
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// FIXME: This diagnostic could be improved.
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void *operator new(__SIZE_TYPE__) noexcept { return nullptr; } // expected-error{{exception specification in declaration does not match previous declaration}}
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#endif
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namespace dr1959 { // dr1959: 3.9
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#if __cplusplus >= 201103L
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struct b;
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struct c;
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struct a {
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a() = default;
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a(const a &) = delete; // expected-note {{deleted}}
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a(const b &) = delete; // not inherited
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a(c &&) = delete; // expected-note {{not viable}}
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template<typename T> a(T) = delete; // expected-note {{would take its own class type by value}}
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};
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struct b : a { // expected-note {{cannot bind}} expected-note {{deleted because}}
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using a::a; // expected-note 2{{inherited here}}
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};
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a x;
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// FIXME: As a resolution to an open DR against P0136R0, we disallow
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// use of inherited constructors to construct from a single argument
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// where the base class is reference-related to the argument type.
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b y = x; // expected-error {{no viable conversion}}
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b z = z; // expected-error {{deleted}}
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struct c : a {
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using a::a;
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c(const c &);
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};
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// FIXME: As a resolution to an open DR against P0136R0, we disallow
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// use of inherited constructors to construct from a single argument
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// where the base class is reference-related to the argument type.
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c q(static_cast<c&&>(q));
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#endif
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}
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namespace dr1966 { // dr1966: 11
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#if __cplusplus >= 201103L
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struct A {
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enum E : int {1}; // expected-error {{expected identifier}} (not bit-field)
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};
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auto *p1 = new enum E : int; // expected-error {{only permitted as a standalone declaration}}
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auto *p2 = new enum F : int {}; // expected-error {{cannot be defined in a type specifier}}
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auto *p3 = true ? new enum G : int {}; // expected-error {{forward reference}} expected-error {{incomplete}} expected-note {{declaration}}
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auto h() -> enum E : int {}; // expected-error {{only permitted as a standalone declaration}}
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enum X : enum Y : int {} {}; // expected-error {{cannot be defined in a type specifier}}
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struct Q {
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enum X : enum Y : int {} {}; // expected-error +{{}}
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};
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#endif
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}
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namespace dr1968 { // dr1968: no
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#if __cplusplus >= 201103L
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// FIXME: According to DR1968, both of these should be considered
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// non-constant.
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static_assert(&typeid(int) == &typeid(int), "");
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constexpr const std::type_info *f() { return &typeid(int); }
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static_assert(f() == f(), "");
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#endif
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}
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namespace dr1991 { // dr1991: 3.9
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#if __cplusplus >= 201103L
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struct A {
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A(int, int) = delete;
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};
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struct B : A {
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using A::A;
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B(int, int, int = 0);
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};
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// FIXME: As a resolution to an open DR against P0136R1, we treat derived
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// class constructors as better than base class constructors in the presence
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// of ambiguity.
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B b(0, 0); // ok, calls B constructor
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#endif
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}
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// dr1994: dup 529
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