1127 lines
31 KiB
C++
1127 lines
31 KiB
C++
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// 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++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++20 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
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// PR13819 -- __SIZE_TYPE__ is incompatible.
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typedef __SIZE_TYPE__ size_t; // expected-error 0-1 {{extension}}
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#if __cplusplus < 201103L
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#define fold(x) (__builtin_constant_p(x) ? (x) : (x))
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#else
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#define fold
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#endif
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namespace dr200 { // dr200: dup 214
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template <class T> T f(int);
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template <class T, class U> T f(U) = delete; // expected-error 0-1{{extension}}
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void g() {
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f<int>(1);
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}
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}
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// dr201 FIXME: write codegen test
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namespace dr202 { // dr202: yes
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template<typename T> T f();
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template<int (*g)()> struct X {
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int arr[fold(g == &f<int>) ? 1 : -1];
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};
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template struct X<f>;
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}
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// FIXME (export) dr204: no
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namespace dr206 { // dr206: yes
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struct S; // expected-note 2{{declaration}}
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template<typename T> struct Q { S s; }; // expected-error {{incomplete}}
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template<typename T> void f() { S s; } // expected-error {{incomplete}}
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}
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namespace dr207 { // dr207: yes
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class A {
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protected:
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static void f() {}
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};
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class B : A {
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public:
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using A::f;
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void g() {
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A::f();
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f();
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}
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};
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}
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// dr208 FIXME: write codegen test
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namespace dr209 { // dr209: yes
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class A {
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void f(); // expected-note {{here}}
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};
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class B {
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friend void A::f(); // expected-error {{private}}
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};
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}
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// dr210 FIXME: write codegen test
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namespace dr211 { // dr211: yes
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struct A {
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A() try {
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throw 0;
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} catch (...) {
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return; // expected-error {{return in the catch of a function try block of a constructor}}
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}
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};
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}
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namespace dr213 { // dr213: yes
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template <class T> struct A : T {
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void h(T t) {
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char &r1 = f(t);
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int &r2 = g(t); // expected-error {{explicit qualification required to use member 'g' from dependent base class}}
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}
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};
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struct B {
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int &f(B);
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int &g(B); // expected-note {{here}}
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};
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char &f(B);
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template void A<B>::h(B); // expected-note {{instantiation}}
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}
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namespace dr214 { // dr214: yes
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template<typename T, typename U> T checked_cast(U from) { U::error; }
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template<typename T, typename U> T checked_cast(U *from);
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class C {};
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void foo(int *arg) { checked_cast<const C *>(arg); }
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template<typename T> T f(int);
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template<typename T, typename U> T f(U) { T::error; }
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void g() {
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f<int>(1);
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}
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}
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namespace dr215 { // dr215: yes
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template<typename T> class X {
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friend void T::foo();
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int n;
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};
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struct Y {
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void foo() { (void)+X<Y>().n; }
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};
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}
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namespace dr216 { // dr216: no
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// FIXME: Should reject this: 'f' has linkage but its type does not,
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// and 'f' is odr-used but not defined in this TU.
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typedef enum { e } *E;
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void f(E);
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void g(E e) { f(e); }
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struct S {
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// FIXME: Should reject this: 'f' has linkage but its type does not,
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// and 'f' is odr-used but not defined in this TU.
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typedef enum { e } *E;
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void f(E);
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};
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void g(S s, S::E e) { s.f(e); }
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}
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namespace dr217 { // dr217: yes
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template<typename T> struct S {
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void f(int);
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};
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template<typename T> void S<T>::f(int = 0) {} // expected-error {{default arguments cannot be added}}
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}
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namespace dr218 { // dr218: yes
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namespace A {
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struct S {};
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void f(S);
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}
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namespace B {
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struct S {};
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void f(S);
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}
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struct C {
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int f;
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void test1(A::S as) { f(as); } // expected-error {{called object type 'int'}}
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void test2(A::S as) { void f(); f(as); } // expected-error {{too many arguments}} expected-note {{}}
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void test3(A::S as) { using A::f; f(as); } // ok
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void test4(A::S as) { using B::f; f(as); } // ok
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void test5(A::S as) { int f; f(as); } // expected-error {{called object type 'int'}}
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void test6(A::S as) { struct f {}; (void) f(as); } // expected-error {{no matching conversion}} expected-note +{{}}
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};
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namespace D {
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struct S {};
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struct X { void operator()(S); } f;
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}
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void testD(D::S ds) { f(ds); } // expected-error {{undeclared identifier}}
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namespace E {
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struct S {};
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struct f { f(S); };
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}
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void testE(E::S es) { f(es); } // expected-error {{undeclared identifier}}
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namespace F {
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struct S {
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template<typename T> friend void f(S, T) {}
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};
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}
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void testF(F::S fs) { f(fs, 0); }
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namespace G {
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namespace X {
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int f;
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struct A {};
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}
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namespace Y {
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template<typename T> void f(T);
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struct B {};
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}
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template<typename A, typename B> struct C {};
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}
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void testG(G::C<G::X::A, G::Y::B> gc) { f(gc); }
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}
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// dr219: na
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// dr220: na
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namespace dr221 { // dr221: yes
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struct A { // expected-note 2-4{{candidate}}
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A &operator=(int&); // expected-note 2{{candidate}}
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A &operator+=(int&);
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static A &operator=(A&, double&); // expected-error {{cannot be a static member}}
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static A &operator+=(A&, double&); // expected-error {{cannot be a static member}}
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friend A &operator=(A&, char&); // expected-error {{must be a non-static member function}}
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friend A &operator+=(A&, char&);
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};
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A &operator=(A&, float&); // expected-error {{must be a non-static member function}}
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A &operator+=(A&, float&);
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void test(A a, int n, char c, float f) {
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a = n;
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a += n;
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a = c; // expected-error {{no viable}}
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a += c;
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a = f; // expected-error {{no viable}}
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a += f;
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}
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}
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namespace dr222 { // dr222: dup 637
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void f(int a, int b, int c, int *x) {
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#pragma clang diagnostic push
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#pragma clang diagnostic warning "-Wunsequenced"
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void((a += b) += c);
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void((a += b) + (a += c)); // expected-warning {{multiple unsequenced modifications to 'a'}}
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x[a++] = a;
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#if __cplusplus < 201703L
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// expected-warning@-2 {{unsequenced modification and access to 'a'}}
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#endif
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a = b = 0; // ok, read and write of 'b' are sequenced
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a = (b = a++);
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#if __cplusplus < 201703L
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// expected-warning@-2 {{multiple unsequenced modifications to 'a'}}
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#endif
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a = (b = ++a);
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#pragma clang diagnostic pop
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}
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}
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// dr223: na
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namespace dr224 { // dr224: no
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namespace example1 {
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template <class T> class A {
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typedef int type;
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A::type a;
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A<T>::type b;
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A<T*>::type c; // expected-error {{missing 'typename'}}
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::dr224::example1::A<T>::type d;
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class B {
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typedef int type;
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A::type a;
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A<T>::type b;
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A<T*>::type c; // expected-error {{missing 'typename'}}
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::dr224::example1::A<T>::type d;
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B::type e;
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A<T>::B::type f;
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A<T*>::B::type g; // expected-error {{missing 'typename'}}
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typename A<T*>::B::type h;
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};
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};
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template <class T> class A<T*> {
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typedef int type;
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A<T*>::type a;
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A<T>::type b; // expected-error {{missing 'typename'}}
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};
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template <class T1, class T2, int I> struct B {
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typedef int type;
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B<T1, T2, I>::type b1;
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B<T2, T1, I>::type b2; // expected-error {{missing 'typename'}}
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typedef T1 my_T1;
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static const int my_I = I;
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static const int my_I2 = I+0;
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static const int my_I3 = my_I;
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B<my_T1, T2, my_I>::type b3; // FIXME: expected-error {{missing 'typename'}}
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B<my_T1, T2, my_I2>::type b4; // expected-error {{missing 'typename'}}
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B<my_T1, T2, my_I3>::type b5; // FIXME: expected-error {{missing 'typename'}}
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};
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}
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namespace example2 {
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template <int, typename T> struct X { typedef T type; };
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template <class T> class A {
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static const int i = 5;
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X<i, int>::type w;
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X<A::i, char>::type x;
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X<A<T>::i, double>::type y;
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X<A<T*>::i, long>::type z; // expected-error {{missing 'typename'}}
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int f();
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};
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template <class T> int A<T>::f() {
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return i;
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}
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}
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}
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// dr225: yes
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template<typename T> void dr225_f(T t) { dr225_g(t); } // expected-error {{call to function 'dr225_g' that is neither visible in the template definition nor found by argument-dependent lookup}}
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void dr225_g(int); // expected-note {{should be declared prior to the call site}}
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template void dr225_f(int); // expected-note {{in instantiation of}}
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namespace dr226 { // dr226: no
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template<typename T = void> void f() {}
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#if __cplusplus < 201103L
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// expected-error@-2 {{extension}}
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// FIXME: This appears to be wrong: default arguments for function templates
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// are listed as a defect (in c++98) not an extension. EDG accepts them in
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// strict c++98 mode.
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#endif
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template<typename T> struct S {
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template<typename U = void> void g();
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#if __cplusplus < 201103L
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// expected-error@-2 {{extension}}
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#endif
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template<typename U> struct X;
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||
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template<typename U> void h();
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||
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};
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||
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template<typename T> template<typename U> void S<T>::g() {}
|
||
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template<typename T> template<typename U = void> struct S<T>::X {}; // expected-error {{cannot add a default template arg}}
|
||
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template<typename T> template<typename U = void> void S<T>::h() {} // expected-error {{cannot add a default template arg}}
|
||
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||
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template<typename> void friend_h();
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||
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struct A {
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||
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// FIXME: This is ill-formed.
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||
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template<typename=void> struct friend_B;
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||
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// FIXME: f, h, and i are ill-formed.
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||
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// f is ill-formed because it is not a definition.
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||
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// h and i are ill-formed because they are not the only declarations of the
|
||
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// function in the translation unit.
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||
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template<typename=void> void friend_f();
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||
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template<typename=void> void friend_g() {}
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||
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template<typename=void> void friend_h() {}
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||
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template<typename=void> void friend_i() {}
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||
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#if __cplusplus < 201103L
|
||
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// expected-error@-5 {{extension}} expected-error@-4 {{extension}}
|
||
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// expected-error@-4 {{extension}} expected-error@-3 {{extension}}
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||
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#endif
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||
|
|
};
|
||
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template<typename> void friend_i();
|
||
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|
||
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template<typename=void, typename X> void foo(X) {}
|
||
|
|
template<typename=void, typename X> struct Foo {}; // expected-error {{missing a default argument}} expected-note {{here}}
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error@-3 {{extension}}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
template<typename=void, typename X, typename, typename Y> int foo(X, Y);
|
||
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|
template<typename, typename X, typename=void, typename Y> int foo(X, Y);
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||
|
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int x = foo(0, 0);
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-error@-4 {{extension}}
|
||
|
|
// expected-error@-4 {{extension}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void dr227(bool b) { // dr227: yes
|
||
|
|
if (b)
|
||
|
|
int n;
|
||
|
|
else
|
||
|
|
int n;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr228 { // dr228: yes
|
||
|
|
template <class T> struct X {
|
||
|
|
void f();
|
||
|
|
};
|
||
|
|
template <class T> struct Y {
|
||
|
|
void g(X<T> x) { x.template X<T>::f(); }
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr229 { // dr229: yes
|
||
|
|
template<typename T> void f();
|
||
|
|
template<typename T> void f<T*>() {} // expected-error {{function template partial specialization}}
|
||
|
|
template<> void f<int>() {}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr230 { // dr230: yes
|
||
|
|
struct S {
|
||
|
|
S() { f(); } // expected-warning {{call to pure virtual member function}}
|
||
|
|
virtual void f() = 0; // expected-note {{declared here}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr231 { // dr231: yes
|
||
|
|
namespace outer {
|
||
|
|
namespace inner {
|
||
|
|
int i; // expected-note {{here}}
|
||
|
|
}
|
||
|
|
void f() { using namespace inner; }
|
||
|
|
int j = i; // expected-error {{undeclared identifier 'i'; did you mean 'inner::i'?}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr234: na
|
||
|
|
// dr235: na
|
||
|
|
|
||
|
|
namespace dr236 { // dr236: yes
|
||
|
|
void *p = int();
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// expected-warning@-2 {{null pointer}}
|
||
|
|
#else
|
||
|
|
// expected-error@-4 {{cannot initialize}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr237 { // dr237: dup 470
|
||
|
|
template<typename T> struct A { void f() { T::error; } };
|
||
|
|
template<typename T> struct B : A<T> {};
|
||
|
|
template struct B<int>; // ok
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr239 { // dr239: yes
|
||
|
|
namespace NS {
|
||
|
|
class T {};
|
||
|
|
void f(T);
|
||
|
|
float &g(T, int);
|
||
|
|
}
|
||
|
|
NS::T parm;
|
||
|
|
int &g(NS::T, float);
|
||
|
|
int main() {
|
||
|
|
f(parm);
|
||
|
|
float &r = g(parm, 1);
|
||
|
|
extern int &g(NS::T, float);
|
||
|
|
int &s = g(parm, 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr240: dup 616
|
||
|
|
|
||
|
|
namespace dr241 { // dr241: yes
|
||
|
|
namespace A {
|
||
|
|
struct B {};
|
||
|
|
template <int X> void f(); // expected-note 3{{candidate}}
|
||
|
|
template <int X> void g(B);
|
||
|
|
}
|
||
|
|
namespace C {
|
||
|
|
template <class T> void f(T t); // expected-note 2{{candidate}}
|
||
|
|
template <class T> void g(T t); // expected-note {{candidate}}
|
||
|
|
}
|
||
|
|
void h(A::B b) {
|
||
|
|
f<3>(b); // expected-error 0-1{{C++20 extension}} expected-error {{no matching}}
|
||
|
|
g<3>(b); // expected-error 0-1{{C++20 extension}}
|
||
|
|
A::f<3>(b); // expected-error {{no matching}}
|
||
|
|
A::g<3>(b);
|
||
|
|
C::f<3>(b); // expected-error {{no matching}}
|
||
|
|
C::g<3>(b); // expected-error {{no matching}}
|
||
|
|
using C::f;
|
||
|
|
using C::g;
|
||
|
|
f<3>(b); // expected-error {{no matching}}
|
||
|
|
g<3>(b);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr243 { // dr243: yes
|
||
|
|
struct B;
|
||
|
|
struct A {
|
||
|
|
A(B); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
struct B {
|
||
|
|
operator A() = delete; // expected-error 0-1{{extension}} expected-note {{candidate}}
|
||
|
|
} b;
|
||
|
|
A a1(b);
|
||
|
|
A a2 = b; // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr244 { // dr244: 11
|
||
|
|
struct B {}; // expected-note {{type 'dr244::B' found by destructor name lookup}}
|
||
|
|
struct D : B {};
|
||
|
|
|
||
|
|
D D_object;
|
||
|
|
typedef B B_alias;
|
||
|
|
B* B_ptr = &D_object;
|
||
|
|
|
||
|
|
void f() {
|
||
|
|
D_object.~B(); // expected-error {{does not match the type 'dr244::D' of the object being destroyed}}
|
||
|
|
D_object.B::~B();
|
||
|
|
D_object.D::~B(); // FIXME: Missing diagnostic for this.
|
||
|
|
B_ptr->~B();
|
||
|
|
B_ptr->~B_alias();
|
||
|
|
B_ptr->B_alias::~B();
|
||
|
|
B_ptr->B_alias::~B_alias();
|
||
|
|
B_ptr->dr244::~B(); // expected-error {{refers to a member in namespace}}
|
||
|
|
B_ptr->dr244::~B_alias(); // expected-error {{refers to a member in namespace}}
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename T, typename U>
|
||
|
|
void f(T *B_ptr, U D_object) {
|
||
|
|
D_object.~B(); // FIXME: Missing diagnostic for this.
|
||
|
|
D_object.B::~B();
|
||
|
|
D_object.D::~B(); // FIXME: Missing diagnostic for this.
|
||
|
|
B_ptr->~B();
|
||
|
|
B_ptr->~B_alias();
|
||
|
|
B_ptr->B_alias::~B();
|
||
|
|
B_ptr->B_alias::~B_alias();
|
||
|
|
B_ptr->dr244::~B(); // expected-error {{does not refer to a type name}}
|
||
|
|
B_ptr->dr244::~B_alias(); // expected-error {{does not refer to a type name}}
|
||
|
|
}
|
||
|
|
template void f<B, D>(B*, D);
|
||
|
|
|
||
|
|
namespace N {
|
||
|
|
template<typename T> struct E {};
|
||
|
|
typedef E<int> F;
|
||
|
|
}
|
||
|
|
void g(N::F f) {
|
||
|
|
typedef N::F G; // expected-note {{found by destructor name lookup}}
|
||
|
|
f.~G();
|
||
|
|
f.G::~E(); // expected-error {{ISO C++ requires the name after '::~' to be found in the same scope as the name before '::~'}}
|
||
|
|
f.G::~F(); // expected-error {{undeclared identifier 'F' in destructor name}}
|
||
|
|
f.G::~G();
|
||
|
|
// This is technically ill-formed; E is looked up in 'N::' and names the
|
||
|
|
// class template, not the injected-class-name of the class. But that's
|
||
|
|
// probably a bug in the standard.
|
||
|
|
f.N::F::~E(); // expected-error {{ISO C++ requires the name after '::~' to be found in the same scope as the name before '::~'}}
|
||
|
|
// This is valid; we look up the second F in the same scope in which we
|
||
|
|
// found the first one, that is, 'N::'.
|
||
|
|
f.N::F::~F();
|
||
|
|
// This is technically ill-formed; G is looked up in 'N::' and is not found.
|
||
|
|
// Rejecting this seems correct, but most compilers accept, so we do also.
|
||
|
|
f.N::F::~G(); // expected-error {{qualified destructor name only found in lexical scope; omit the qualifier to find this type name by unqualified lookup}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Bizarrely, compilers perform lookup in the scope for qualified destructor
|
||
|
|
// names, if the nested-name-specifier is non-dependent. Ensure we diagnose
|
||
|
|
// this.
|
||
|
|
namespace QualifiedLookupInScope {
|
||
|
|
namespace N {
|
||
|
|
template <typename> struct S { struct Inner {}; };
|
||
|
|
}
|
||
|
|
template <typename U> void f(typename N::S<U>::Inner *p) {
|
||
|
|
typedef typename N::S<U>::Inner T;
|
||
|
|
p->::dr244::QualifiedLookupInScope::N::S<U>::Inner::~T(); // expected-error {{no type named 'T' in}}
|
||
|
|
}
|
||
|
|
template void f<int>(N::S<int>::Inner *); // expected-note {{instantiation of}}
|
||
|
|
|
||
|
|
template <typename U> void g(U *p) {
|
||
|
|
typedef U T;
|
||
|
|
p->T::~T();
|
||
|
|
p->U::~T();
|
||
|
|
p->::dr244::QualifiedLookupInScope::N::S<int>::Inner::~T(); // expected-error {{'T' does not refer to a type name}}
|
||
|
|
}
|
||
|
|
template void g(N::S<int>::Inner *);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr245 { // dr245: yes
|
||
|
|
struct S {
|
||
|
|
enum E {}; // expected-note {{here}}
|
||
|
|
class E *p; // expected-error {{does not match previous declaration}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr246 { // dr246: yes
|
||
|
|
struct S {
|
||
|
|
S() try { // expected-note {{try block}}
|
||
|
|
throw 0;
|
||
|
|
X: ;
|
||
|
|
} catch (int) {
|
||
|
|
goto X; // expected-error {{cannot jump}}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr247 { // dr247: yes
|
||
|
|
struct A {};
|
||
|
|
struct B : A {
|
||
|
|
void f();
|
||
|
|
void f(int);
|
||
|
|
};
|
||
|
|
void (A::*f)() = (void (A::*)())&B::f;
|
||
|
|
|
||
|
|
struct C {
|
||
|
|
void f();
|
||
|
|
void f(int);
|
||
|
|
};
|
||
|
|
struct D : C {};
|
||
|
|
void (C::*g)() = &D::f;
|
||
|
|
void (D::*h)() = &D::f;
|
||
|
|
|
||
|
|
struct E {
|
||
|
|
void f();
|
||
|
|
};
|
||
|
|
struct F : E {
|
||
|
|
using E::f;
|
||
|
|
void f(int);
|
||
|
|
};
|
||
|
|
void (F::*i)() = &F::f;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr248 { // dr248: yes c++11
|
||
|
|
// FIXME: Should this also apply to c++98 mode? This was a DR against C++98.
|
||
|
|
int \u040d\u040e = 0;
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
// FIXME: expected-error@-2 {{expected ';'}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr249 { // dr249: yes
|
||
|
|
template<typename T> struct X { void f(); };
|
||
|
|
template<typename T> void X<T>::f() {}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr250 { // dr250: yes
|
||
|
|
typedef void (*FPtr)(double x[]);
|
||
|
|
|
||
|
|
template<int I> void f(double x[]);
|
||
|
|
FPtr fp = &f<3>;
|
||
|
|
|
||
|
|
template<int I = 3> void g(double x[]); // expected-error 0-1{{extension}}
|
||
|
|
FPtr gp = &g<>;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr252 { // dr252: yes
|
||
|
|
struct A {
|
||
|
|
void operator delete(void*); // expected-note {{found}}
|
||
|
|
};
|
||
|
|
struct B {
|
||
|
|
void operator delete(void*); // expected-note {{found}}
|
||
|
|
};
|
||
|
|
struct C : A, B {
|
||
|
|
virtual ~C();
|
||
|
|
};
|
||
|
|
C::~C() {} // expected-error {{'operator delete' found in multiple base classes}}
|
||
|
|
|
||
|
|
struct D {
|
||
|
|
void operator delete(void*, int); // expected-note {{here}}
|
||
|
|
virtual ~D();
|
||
|
|
};
|
||
|
|
D::~D() {} // expected-error {{no suitable member 'operator delete'}}
|
||
|
|
|
||
|
|
struct E {
|
||
|
|
void operator delete(void*, int);
|
||
|
|
void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note 1-2 {{here}}
|
||
|
|
virtual ~E(); // expected-error 0-1 {{attempt to use a deleted function}}
|
||
|
|
};
|
||
|
|
E::~E() {} // expected-error {{attempt to use a deleted function}}
|
||
|
|
|
||
|
|
struct F {
|
||
|
|
// If both functions are available, the first one is a placement delete.
|
||
|
|
void operator delete(void*, size_t);
|
||
|
|
void operator delete(void*) = delete; // expected-error 0-1{{extension}} expected-note {{here}}
|
||
|
|
virtual ~F();
|
||
|
|
};
|
||
|
|
F::~F() {} // expected-error {{attempt to use a deleted function}}
|
||
|
|
|
||
|
|
struct G {
|
||
|
|
void operator delete(void*, size_t);
|
||
|
|
virtual ~G();
|
||
|
|
};
|
||
|
|
G::~G() {}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr254 { // dr254: yes
|
||
|
|
template<typename T> struct A {
|
||
|
|
typedef typename T::type type; // ok even if this is a typedef-name, because
|
||
|
|
// it's not an elaborated-type-specifier
|
||
|
|
typedef struct T::type foo; // expected-error {{typedef 'type' cannot be referenced with a struct specifier}}
|
||
|
|
};
|
||
|
|
struct B { struct type {}; };
|
||
|
|
struct C { typedef struct {} type; }; // expected-note {{here}}
|
||
|
|
A<B>::type n;
|
||
|
|
A<C>::type n; // expected-note {{instantiation of}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr256: dup 624
|
||
|
|
|
||
|
|
namespace dr257 { // dr257: yes
|
||
|
|
struct A { A(int); }; // expected-note {{here}}
|
||
|
|
struct B : virtual A {
|
||
|
|
B() {}
|
||
|
|
virtual void f() = 0;
|
||
|
|
};
|
||
|
|
struct C : B {
|
||
|
|
C() {}
|
||
|
|
};
|
||
|
|
struct D : B {
|
||
|
|
D() {} // expected-error {{must explicitly initialize the base class 'dr257::A'}}
|
||
|
|
void f();
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr258 { // dr258: yes
|
||
|
|
struct A {
|
||
|
|
void f(const int);
|
||
|
|
template<typename> void g(int);
|
||
|
|
float &h() const;
|
||
|
|
};
|
||
|
|
struct B : A {
|
||
|
|
using A::f;
|
||
|
|
using A::g;
|
||
|
|
using A::h;
|
||
|
|
int &f(int);
|
||
|
|
template<int> int &g(int); // expected-note {{candidate}}
|
||
|
|
int &h();
|
||
|
|
} b;
|
||
|
|
int &w = b.f(0);
|
||
|
|
int &x = b.g<int>(0); // expected-error {{no match}}
|
||
|
|
int &y = b.h();
|
||
|
|
float &z = const_cast<const B&>(b).h();
|
||
|
|
|
||
|
|
struct C {
|
||
|
|
virtual void f(const int) = 0;
|
||
|
|
};
|
||
|
|
struct D : C {
|
||
|
|
void f(int);
|
||
|
|
} d;
|
||
|
|
|
||
|
|
struct E {
|
||
|
|
virtual void f() = 0; // expected-note {{unimplemented}}
|
||
|
|
};
|
||
|
|
struct F : E {
|
||
|
|
void f() const {}
|
||
|
|
} f; // expected-error {{abstract}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr259 { // dr259: 4
|
||
|
|
template<typename T> struct A {};
|
||
|
|
template struct A<int>; // expected-note {{previous}}
|
||
|
|
template struct A<int>; // expected-error {{duplicate explicit instantiation}}
|
||
|
|
|
||
|
|
template<> struct A<float>; // expected-note {{previous}}
|
||
|
|
template struct A<float>; // expected-warning {{has no effect}}
|
||
|
|
|
||
|
|
template struct A<char>; // expected-note {{here}}
|
||
|
|
template<> struct A<char>; // expected-error {{explicit specialization of 'dr259::A<char>' after instantiation}}
|
||
|
|
|
||
|
|
template<> struct A<double>;
|
||
|
|
template<> struct A<double>;
|
||
|
|
template<> struct A<double> {}; // expected-note {{here}}
|
||
|
|
template<> struct A<double> {}; // expected-error {{redefinition}}
|
||
|
|
|
||
|
|
template<typename T> struct B; // expected-note {{here}}
|
||
|
|
template struct B<int>; // expected-error {{undefined}}
|
||
|
|
|
||
|
|
template<> struct B<float>; // expected-note {{previous}}
|
||
|
|
template struct B<float>; // expected-warning {{has no effect}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// FIXME: When dr260 is resolved, also add tests for DR507.
|
||
|
|
|
||
|
|
namespace dr261 { // dr261: no
|
||
|
|
#pragma clang diagnostic push
|
||
|
|
#pragma clang diagnostic warning "-Wused-but-marked-unused"
|
||
|
|
|
||
|
|
// FIXME: This is ill-formed, with a diagnostic required, because operator new
|
||
|
|
// and operator delete are inline and odr-used, but not defined in this
|
||
|
|
// translation unit.
|
||
|
|
// We're also missing the -Wused-but-marked-unused diagnostic here.
|
||
|
|
struct A {
|
||
|
|
inline void *operator new(size_t) __attribute__((unused));
|
||
|
|
inline void operator delete(void*) __attribute__((unused));
|
||
|
|
A() {}
|
||
|
|
};
|
||
|
|
|
||
|
|
// FIXME: This is ill-formed, with a required diagnostic, for the same
|
||
|
|
// reason.
|
||
|
|
struct B {
|
||
|
|
inline void operator delete(void*) __attribute__((unused));
|
||
|
|
~B() {}
|
||
|
|
};
|
||
|
|
struct C {
|
||
|
|
inline void operator delete(void*) __attribute__((unused));
|
||
|
|
virtual ~C() {} // expected-warning {{'operator delete' was marked unused but was used}}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct D {
|
||
|
|
inline void operator delete(void*) __attribute__((unused));
|
||
|
|
};
|
||
|
|
void h() { C::operator delete(0); } // expected-warning {{marked unused but was used}}
|
||
|
|
|
||
|
|
#pragma clang diagnostic pop
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr262 { // dr262: yes
|
||
|
|
int f(int = 0, ...);
|
||
|
|
int k = f();
|
||
|
|
int l = f(0);
|
||
|
|
int m = f(0, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr263 { // dr263: yes
|
||
|
|
struct X {};
|
||
|
|
struct Y {
|
||
|
|
#if __cplusplus < 201103L
|
||
|
|
friend X::X() throw();
|
||
|
|
friend X::~X() throw();
|
||
|
|
#elif __cplusplus <= 201703L
|
||
|
|
friend constexpr X::X() noexcept;
|
||
|
|
friend X::~X();
|
||
|
|
#else
|
||
|
|
friend constexpr X::X() noexcept;
|
||
|
|
friend constexpr X::~X();
|
||
|
|
#endif
|
||
|
|
Y::Y(); // expected-error {{extra qualification}}
|
||
|
|
Y::~Y(); // expected-error {{extra qualification}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr265: dup 353
|
||
|
|
// dr266: na
|
||
|
|
// dr269: na
|
||
|
|
// dr270: na
|
||
|
|
|
||
|
|
namespace dr272 { // dr272: yes
|
||
|
|
struct X {
|
||
|
|
void f() {
|
||
|
|
this->~X();
|
||
|
|
X::~X();
|
||
|
|
~X(); // expected-error {{unary expression}}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
namespace dr273 { // dr273: yes
|
||
|
|
struct A {
|
||
|
|
int n;
|
||
|
|
};
|
||
|
|
void operator&(A);
|
||
|
|
void f(A a, ...) {
|
||
|
|
offsetof(A, n);
|
||
|
|
va_list val;
|
||
|
|
va_start(val, a);
|
||
|
|
va_end(val);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr274: na
|
||
|
|
|
||
|
|
namespace dr275 { // dr275: no
|
||
|
|
namespace N {
|
||
|
|
template <class T> void f(T) {} // expected-note 1-4{{here}}
|
||
|
|
template <class T> void g(T) {} // expected-note {{candidate}}
|
||
|
|
template <> void f(int);
|
||
|
|
template <> void f(char);
|
||
|
|
template <> void f(double);
|
||
|
|
template <> void g(char);
|
||
|
|
}
|
||
|
|
|
||
|
|
using namespace N;
|
||
|
|
|
||
|
|
namespace M {
|
||
|
|
template <> void N::f(char) {} // expected-error {{'M' does not enclose namespace 'N'}}
|
||
|
|
template <class T> void g(T) {}
|
||
|
|
template <> void g(char) {}
|
||
|
|
template void f(long);
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
// FIXME: this should be rejected in c++98 too
|
||
|
|
// expected-error@-3 {{must occur in namespace 'N'}}
|
||
|
|
#endif
|
||
|
|
template void N::f(unsigned long);
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
// FIXME: this should be rejected in c++98 too
|
||
|
|
// expected-error@-3 {{not in a namespace enclosing 'N'}}
|
||
|
|
#endif
|
||
|
|
template void h(long); // expected-error {{does not refer to a function template}}
|
||
|
|
template <> void f(double) {} // expected-error {{no function template matches}}
|
||
|
|
}
|
||
|
|
|
||
|
|
template <class T> void g(T) {} // expected-note {{candidate}}
|
||
|
|
|
||
|
|
template <> void N::f(char) {}
|
||
|
|
template <> void f(int) {} // expected-error {{no function template matches}}
|
||
|
|
|
||
|
|
template void f(short);
|
||
|
|
#if __cplusplus >= 201103L
|
||
|
|
// FIXME: this should be rejected in c++98 too
|
||
|
|
// expected-error@-3 {{must occur in namespace 'N'}}
|
||
|
|
#endif
|
||
|
|
template void N::f(unsigned short);
|
||
|
|
|
||
|
|
// FIXME: this should probably be valid. the wording from the issue
|
||
|
|
// doesn't clarify this, but it follows from the usual rules.
|
||
|
|
template void g(int); // expected-error {{ambiguous}}
|
||
|
|
|
||
|
|
// FIXME: likewise, this should also be valid.
|
||
|
|
template<typename T> void f(T) {} // expected-note {{candidate}}
|
||
|
|
template void f(short); // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr276: na
|
||
|
|
|
||
|
|
namespace dr277 { // dr277: yes
|
||
|
|
typedef int *intp;
|
||
|
|
int *p = intp();
|
||
|
|
int a[fold(intp() ? -1 : 1)];
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr280 { // dr280: yes
|
||
|
|
typedef void f0();
|
||
|
|
typedef void f1(int);
|
||
|
|
typedef void f2(int, int);
|
||
|
|
typedef void f3(int, int, int);
|
||
|
|
struct A {
|
||
|
|
operator f1*(); // expected-note {{here}} expected-note {{candidate}}
|
||
|
|
operator f2*();
|
||
|
|
};
|
||
|
|
struct B {
|
||
|
|
operator f0*(); // expected-note {{candidate}}
|
||
|
|
private:
|
||
|
|
operator f3*(); // expected-note {{here}} expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
struct C {
|
||
|
|
operator f0*(); // expected-note {{candidate}}
|
||
|
|
operator f1*(); // expected-note {{candidate}}
|
||
|
|
operator f2*(); // expected-note {{candidate}}
|
||
|
|
operator f3*(); // expected-note {{candidate}}
|
||
|
|
};
|
||
|
|
struct D : private A, B { // expected-note {{here}}
|
||
|
|
operator f2*(); // expected-note {{candidate}}
|
||
|
|
} d;
|
||
|
|
struct E : C, D {} e;
|
||
|
|
void g() {
|
||
|
|
d(); // ok, public
|
||
|
|
d(0); // expected-error {{private member of 'dr280::A'}}
|
||
|
|
d(0, 0); // ok, suppressed by member in D
|
||
|
|
d(0, 0, 0); // expected-error {{private member of 'dr280::B'}}
|
||
|
|
e(); // expected-error {{ambiguous}}
|
||
|
|
e(0); // expected-error {{ambiguous}}
|
||
|
|
e(0, 0); // expected-error {{ambiguous}}
|
||
|
|
e(0, 0, 0); // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr281 { // dr281: no
|
||
|
|
void a();
|
||
|
|
inline void b();
|
||
|
|
|
||
|
|
void d();
|
||
|
|
inline void e();
|
||
|
|
|
||
|
|
struct S {
|
||
|
|
friend inline void a(); // FIXME: ill-formed
|
||
|
|
friend inline void b();
|
||
|
|
friend inline void c(); // FIXME: ill-formed
|
||
|
|
friend inline void d() {}
|
||
|
|
friend inline void e() {}
|
||
|
|
friend inline void f() {}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr283 { // dr283: yes
|
||
|
|
template<typename T> // expected-note 2{{here}}
|
||
|
|
struct S {
|
||
|
|
friend class T; // expected-error {{shadows}}
|
||
|
|
class T; // expected-error {{shadows}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr284 { // dr284: no
|
||
|
|
namespace A {
|
||
|
|
struct X;
|
||
|
|
enum Y {};
|
||
|
|
class Z {};
|
||
|
|
}
|
||
|
|
namespace B {
|
||
|
|
struct W;
|
||
|
|
using A::X;
|
||
|
|
using A::Y;
|
||
|
|
using A::Z;
|
||
|
|
}
|
||
|
|
struct B::V {}; // expected-error {{no struct named 'V'}}
|
||
|
|
struct B::W {};
|
||
|
|
struct B::X {}; // FIXME: ill-formed
|
||
|
|
enum B::Y e; // ok per dr417
|
||
|
|
class B::Z z; // ok per dr417
|
||
|
|
|
||
|
|
struct C {
|
||
|
|
struct X;
|
||
|
|
enum Y {};
|
||
|
|
class Z {};
|
||
|
|
};
|
||
|
|
struct D : C {
|
||
|
|
struct W;
|
||
|
|
using C::X;
|
||
|
|
using C::Y;
|
||
|
|
using C::Z;
|
||
|
|
};
|
||
|
|
struct D::V {}; // expected-error {{no struct named 'V'}}
|
||
|
|
struct D::W {};
|
||
|
|
struct D::X {}; // FIXME: ill-formed
|
||
|
|
enum D::Y e2; // ok per dr417
|
||
|
|
class D::Z z2; // ok per dr417
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr285 { // dr285: yes
|
||
|
|
template<typename T> void f(T, int); // expected-note {{match}}
|
||
|
|
template<typename T> void f(int, T); // expected-note {{match}}
|
||
|
|
template<> void f<int>(int, int) {} // expected-error {{ambiguous}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr286 { // dr286: yes
|
||
|
|
template<class T> struct A {
|
||
|
|
class C {
|
||
|
|
template<class T2> struct B {}; // expected-note {{here}}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
template<class T>
|
||
|
|
template<class T2>
|
||
|
|
struct A<T>::C::B<T2*> { };
|
||
|
|
|
||
|
|
A<short>::C::B<int*> absip; // expected-error {{private}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr288: na
|
||
|
|
|
||
|
|
namespace dr289 { // dr289: yes
|
||
|
|
struct A; // expected-note {{forward}}
|
||
|
|
struct B : A {}; // expected-error {{incomplete}}
|
||
|
|
|
||
|
|
template<typename T> struct C { typename T::error error; }; // expected-error {{cannot be used prior to '::'}}
|
||
|
|
struct D : C<int> {}; // expected-note {{instantiation}}
|
||
|
|
}
|
||
|
|
|
||
|
|
// dr290: na
|
||
|
|
// dr291: dup 391
|
||
|
|
// dr292 FIXME: write a codegen test
|
||
|
|
|
||
|
|
namespace dr294 { // dr294: no
|
||
|
|
void f() throw(int);
|
||
|
|
#if __cplusplus > 201402L
|
||
|
|
// expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}}
|
||
|
|
#endif
|
||
|
|
int main() {
|
||
|
|
(void)static_cast<void (*)() throw()>(f); // FIXME: ill-formed in C++14 and before
|
||
|
|
#if __cplusplus > 201402L
|
||
|
|
// FIXME: expected-error@-2 {{not allowed}}
|
||
|
|
//
|
||
|
|
// Irony: the above is valid in C++17 and beyond, but that's exactly when
|
||
|
|
// we reject it. In C++14 and before, this is ill-formed because an
|
||
|
|
// exception-specification is not permitted in a type-id. In C++17, this is
|
||
|
|
// valid because it's the inverse of a standard conversion sequence
|
||
|
|
// containing a function pointer conversion. (Well, it's actually not valid
|
||
|
|
// yet, as a static_cast is not permitted to reverse a function pointer
|
||
|
|
// conversion, but that is being changed by core issue).
|
||
|
|
#endif
|
||
|
|
(void)static_cast<void (*)() throw(int)>(f); // FIXME: ill-formed in C++14 and before
|
||
|
|
#if __cplusplus > 201402L
|
||
|
|
// expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
void (*p)() throw() = f; // expected-error-re {{{{not superset|different exception specification}}}}
|
||
|
|
void (*q)() throw(int) = f;
|
||
|
|
#if __cplusplus > 201402L
|
||
|
|
// expected-error@-2 {{ISO C++17 does not allow}} expected-note@-2 {{use 'noexcept}}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr295 { // dr295: 3.7
|
||
|
|
typedef int f();
|
||
|
|
const f g; // expected-warning {{'const' qualifier on function type 'dr295::f' (aka 'int ()') has no effect}}
|
||
|
|
f &r = g;
|
||
|
|
template<typename T> struct X {
|
||
|
|
const T &f;
|
||
|
|
};
|
||
|
|
X<f> x = {g};
|
||
|
|
|
||
|
|
typedef int U();
|
||
|
|
typedef const U U; // expected-warning {{'const' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}}
|
||
|
|
|
||
|
|
typedef int (*V)();
|
||
|
|
typedef volatile U *V; // expected-warning {{'volatile' qualifier on function type 'dr295::U' (aka 'int ()') has no effect}}
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr296 { // dr296: yes
|
||
|
|
struct A {
|
||
|
|
static operator int() { return 0; } // expected-error {{static}}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr298 { // dr298: yes
|
||
|
|
struct A {
|
||
|
|
typedef int type;
|
||
|
|
A();
|
||
|
|
~A();
|
||
|
|
};
|
||
|
|
typedef A B; // expected-note {{here}}
|
||
|
|
typedef const A C; // expected-note {{here}}
|
||
|
|
|
||
|
|
A::type i1;
|
||
|
|
B::type i2;
|
||
|
|
C::type i3;
|
||
|
|
|
||
|
|
struct A a;
|
||
|
|
struct B b; // expected-error {{typedef 'B' cannot be referenced with a struct specifier}}
|
||
|
|
struct C c; // expected-error {{typedef 'C' cannot be referenced with a struct specifier}}
|
||
|
|
|
||
|
|
B::B() {} // expected-error {{requires a type specifier}}
|
||
|
|
B::A() {} // ok
|
||
|
|
C::~C() {} // expected-error {{destructor cannot be declared using a typedef 'dr298::C' (aka 'const dr298::A') of the class name}}
|
||
|
|
|
||
|
|
typedef struct D E; // expected-note {{here}}
|
||
|
|
struct E {}; // expected-error {{conflicts with typedef}}
|
||
|
|
|
||
|
|
struct F {
|
||
|
|
~F();
|
||
|
|
};
|
||
|
|
typedef const F G;
|
||
|
|
G::~F() {} // ok
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace dr299 { // dr299: yes c++11
|
||
|
|
struct S {
|
||
|
|
operator int();
|
||
|
|
};
|
||
|
|
struct T {
|
||
|
|
operator int(); // expected-note {{}}
|
||
|
|
operator unsigned short(); // expected-note {{}}
|
||
|
|
};
|
||
|
|
// FIXME: should this apply to c++98 mode?
|
||
|
|
int *p = new int[S()]; // expected-error 0-1{{extension}}
|
||
|
|
int *q = new int[T()]; // expected-error {{ambiguous}}
|
||
|
|
}
|