// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++1z %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
namespace dr300 { // dr300: yes
template<typename R, typename A> void f(R (&)(A)) {}
int g(int);
void h() { f(g); }
}
namespace dr301 { // dr301: yes
// see also dr38
struct S;
template<typename T> void operator+(T, T);
void operator-(S, S);
void f() {
bool a = (void(*)(S, S))operator+<S> <
(void(*)(S, S))operator+<S>;
bool b = (void(*)(S, S))operator- <
(void(*)(S, S))operator-;
bool c = (void(*)(S, S))operator+ <
(void(*)(S, S))operator-; // expected-error {{expected '>'}}
}
template<typename T> void f() {
typename T::template operator+<int> a; // expected-error {{typename specifier refers to a non-type template}} expected-error +{{}}
// FIXME: This shouldn't say (null).
class T::template operator+<int> b; // expected-error {{identifier followed by '<' indicates a class template specialization but (null) refers to a function template}}
enum T::template operator+<int> c; // expected-error {{expected identifier}} expected-error {{does not declare anything}}
enum T::template operator+<int>::E d; // expected-error {{qualified name refers into a specialization of function template 'T::template operator +'}} expected-error {{forward reference}}
enum T::template X<int>::E e;
T::template operator+<int>::foobar(); // expected-error {{qualified name refers into a specialization of function template 'T::template operator +'}}
T::template operator+<int>(0); // ok
}
template<typename T> class operator&<T*> {}; // expected-error +{{}}
template<typename T> class T::operator& {}; // expected-error +{{}}
template<typename T> class S::operator&<T*> {}; // expected-error +{{}}
}
namespace dr302 { // dr302: yes
struct A { A(); ~A(); };
#if __cplusplus < 201103L
struct B { // expected-error {{implicit default constructor for 'dr302::B' must explicitly initialize the const member 'n'}}
const int n; // expected-note {{declared here}}
A a;
} b = B(); // expected-note {{first required here}}
// Trivial default constructor C::C() is not called here.
struct C {
const int n;
} c = C();
#else
struct B {
const int n; // expected-note {{deleted because field 'n' of const-qualified type 'const int' would not be initialized}}
A a;
} b = B(); // expected-error {{call to implicitly-deleted default constructor}}
// C::C() is called here, because even though it's trivial, it's deleted.
struct C {
const int n; // expected-note {{deleted because field 'n' of const-qualified type 'const int' would not be initialized}}
} c = C(); // expected-error {{call to implicitly-deleted default constructor}}
struct D {
const int n = 0;
} d = D();
#endif
}
// dr303: na
namespace dr304 { // dr304: yes
typedef int &a;
int n = a(); // expected-error {{requires an initializer}}
struct S { int &b; };
int m = S().b;
#if __cplusplus < 201103L
// expected-error@-3 {{requires an initializer}}
// expected-note@-3 {{in value-initialization}}
#else
// expected-error@-5 {{deleted}}
// expected-note@-7 {{reference}}
#endif
}
namespace dr305 { // dr305: no
struct A {
typedef A C;
};
void f(A *a) {
struct A {};
a->~A();
a->~C();
}
typedef A B;
void g(B *b) {
b->~B();
b->~C();
}
void h(B *b) {
struct B {}; // expected-note {{declared here}}
b->~B(); // expected-error {{does not match}}
}
template<typename T> struct X {};
void i(X<int>* x) {
struct X {};
x->~X<int>();
x->~X();
x->~X<char>(); // expected-error {{no member named}}
}
#if __cplusplus >= 201103L
struct Y {
template<typename T> using T1 = Y;
};
template<typename T> using T2 = Y;
void j(Y *y) {
y->~T1<int>();
y->~T2<int>();
}
struct Z {
template<typename T> using T2 = T;
};
void k(Z *z) {
// FIXME: This diagnostic is terrible.
z->~T1<int>(); // expected-error {{'T1' following the 'template' keyword does not refer to a template}} expected-error +{{}}
z->~T2<int>(); // expected-error {{no member named '~int'}}
z->~T2<Z>();
}
// FIXME: This is valid.
namespace Q {
template<typename A> struct R {};
}
template<typename A> using R = Q::R<int>;
void qr(Q::R<int> x) { x.~R<char>(); } // expected-error {{no member named}}
#endif
}
namespace dr306 { // dr306: no
// FIXME: dup 39
// FIXME: This should be accepted.
struct A { struct B {}; }; // expected-note 2{{member}}
struct C { typedef A::B B; }; // expected-note {{member}}
struct D : A, A::B, C {};
D::B b; // expected-error {{found in multiple base classes of different types}}
}
// dr307: na
namespace dr308 { // dr308: yes
// This is mostly an ABI library issue.
struct A {};
struct B : A {};
struct C : A {};
struct D : B, C {};
void f() {
try {
throw D();
} catch (const A&) { // expected-note {{for type 'const dr308::A &'}}
// unreachable
} catch (const B&) { // expected-warning {{exception of type 'const dr308::B &' will be caught by earlier handler}}
// get here instead
}
}
}
// dr309: dup 485
namespace dr311 { // dr311: yes
namespace X { namespace Y {} }
namespace X::Y {}
#if __cplusplus <= 201402L
// expected-error@-2 {{define each namespace separately}}
#endif
namespace X {
namespace X::Y {}
#if __cplusplus <= 201402L
// expected-error@-2 {{define each namespace separately}}
#endif
}
// FIXME: The diagnostics here are not very good.
namespace ::dr311::X {} // expected-error 2+{{}} // expected-warning {{extra qual}}
}
// dr312: dup 616
namespace dr313 { // dr313: dup 299 c++11
struct A { operator int() const; };
int *p = new int[A()];
#if __cplusplus < 201103L
// FIXME: should this be available in c++98 mode? expected-error@-2 {{extension}}
#endif
}
namespace dr314 { // FIXME 314: dup 1710
template<typename T> struct A {
template<typename U> struct B {};
};
template<typename T> struct C : public A<T>::template B<T> {
C() : A<T>::template B<T>() {}
};
}
// dr315: na
// dr316: sup 1004
namespace dr317 { // dr317: 3.5
void f() {} // expected-note {{previous}}
inline void f(); // expected-error {{inline declaration of 'f' follows non-inline definition}}
int g();
int n = g();
inline int g() { return 0; }
int h();
int m = h();
int h() { return 0; } // expected-note {{previous}}
inline int h(); // expected-error {{inline declaration of 'h' follows non-inline definition}}
}
namespace dr318 { // dr318: sup 1310
struct A {};
struct A::A a;
}
namespace dr319 { // dr319: no
// FIXME: dup dr389
// FIXME: We don't have a diagnostic for a name with linkage
// having a type without linkage.
typedef struct {
int i;
} *ps;
extern "C" void f(ps);
void g(ps); // FIXME: ill-formed, type 'ps' has no linkage
static enum { e } a1;
enum { e2 } a2; // FIXME: ill-formed, enum type has no linkage
enum { n1 = 1u };
typedef int (*pa)[n1];
pa parr; // ok, type has linkage despite using 'n1'
template<typename> struct X {};
void f() {
struct A { int n; };
extern A a; // FIXME: ill-formed
X<A> xa;
typedef A B;
extern B b; // FIXME: ill-formed
X<B> xb;
const int n = 1;
typedef int (*C)[n];
extern C c; // ok
X<C> xc;
}
#if __cplusplus < 201103L
// expected-error@-12 {{uses local type 'A'}}
// expected-error@-9 {{uses local type 'A'}}
#endif
}
namespace dr320 { // dr320: yes
#if __cplusplus >= 201103L
struct X {
constexpr X() {}
constexpr X(const X &x) : copies(x.copies + 1) {}
unsigned copies = 0;
};
constexpr X f(X x) { return x; }
constexpr unsigned g(X x) { return x.copies; }
static_assert(f(X()).copies == g(X()) + 1, "expected one extra copy for return value");
#endif
}
namespace dr321 { // dr321: dup 557
namespace N {
template<int> struct A {
template<int> struct B;
};
template<> template<> struct A<0>::B<0>;
void f(A<0>::B<0>);
}
template<> template<> struct N::A<0>::B<0> {};
template<typename T> void g(T t) { f(t); }
template void g(N::A<0>::B<0>);
namespace N {
template<typename> struct I { friend bool operator==(const I&, const I&); };
}
N::I<int> i, j;
bool x = i == j;
}
namespace dr322 { // dr322: yes
struct A {
template<typename T> operator T&();
} a;
int &r = static_cast<int&>(a);
int &s = a;
}
// dr323: no
namespace dr324 { // dr324: yes
struct S { int n : 1; } s; // expected-note 3{{bit-field is declared here}}
int &a = s.n; // expected-error {{non-const reference cannot bind to bit-field}}
int *b = &s.n; // expected-error {{address of bit-field}}
int &c = (s.n = 0); // expected-error {{non-const reference cannot bind to bit-field}}
int *d = &(s.n = 0); // expected-error {{address of bit-field}}
int &e = true ? s.n : s.n; // expected-error {{non-const reference cannot bind to bit-field}}
int *f = &(true ? s.n : s.n); // expected-error {{address of bit-field}}
int &g = (void(), s.n); // expected-error {{non-const reference cannot bind to bit-field}}
int *h = &(void(), s.n); // expected-error {{address of bit-field}}
int *i = &++s.n; // expected-error {{address of bit-field}}
}
namespace dr326 { // dr326: yes
struct S {};
int test[__is_trivially_constructible(S, const S&) ? 1 : -1];
}
namespace dr327 { // dr327: dup 538
struct A;
class A {};
class B;
struct B {};
}
namespace dr328 { // dr328: yes
struct A; // expected-note 3{{forward declaration}}
struct B { A a; }; // expected-error {{incomplete}}
template<typename> struct C { A a; }; // expected-error {{incomplete}}
A *p = new A[0]; // expected-error {{incomplete}}
}
namespace dr329 { // dr329: 3.5
struct B {};
template<typename T> struct A : B {
friend void f(A a) { g(a); }
friend void h(A a) { g(a); } // expected-error {{undeclared}}
friend void i(B b) {} // expected-error {{redefinition}} expected-note {{previous}}
};
A<int> a;
A<char> b; // expected-note {{instantiation}}
void test() {
h(a); // expected-note {{instantiation}}
}
}
namespace dr331 { // dr331: yes
struct A {
A(volatile A&); // expected-note {{candidate}}
} const a, b(a); // expected-error {{no matching constructor}}
}
namespace dr332 { // dr332: dup 577
void f(volatile void); // expected-error {{'void' as parameter must not have type qualifiers}}
void g(const void); // expected-error {{'void' as parameter must not have type qualifiers}}
void h(int n, volatile void); // expected-error {{'void' must be the first and only parameter}}
}
namespace dr333 { // dr333: yes
int n = 0;
int f(int(n));
int g((int(n)));
int h = f(g);
}
namespace dr334 { // dr334: yes
template<typename T> void f() {
T x;
f((x, 123));
}
struct S {
friend S operator,(S, int);
friend void f(S);
};
template void f<S>();
}
// dr335: no
namespace dr336 { // dr336: yes
namespace Pre {
template<class T1> class A {
template<class T2> class B {
template<class T3> void mf1(T3);
void mf2();
};
};
template<> template<class X> class A<int>::B {};
template<> template<> template<class T> void A<int>::B<double>::mf1(T t) {} // expected-error {{does not match}}
template<class Y> template<> void A<Y>::B<double>::mf2() {} // expected-error {{does not refer into a class}}
}
namespace Post {
template<class T1> class A {
template<class T2> class B {
template<class T3> void mf1(T3);
void mf2();
};
};
template<> template<class X> class A<int>::B {
template<class T> void mf1(T);
};
template<> template<> template<class T> void A<int>::B<double>::mf1(T t) {}
// FIXME: This diagnostic isn't very good.
template<class Y> template<> void A<Y>::B<double>::mf2() {} // expected-error {{does not refer into a class}}
}
}
namespace dr337 { // dr337: yes
template<typename T> void f(T (*)[1]);
template<typename T> int &f(...);
struct A { virtual ~A() = 0; };
int &r = f<A>(0);
// FIXME: The language rules here are completely broken. We cannot determine
// whether an incomplete type is abstract. See DR1640, which will probably
// supersede this one and remove this rule.
struct B;
int &s = f<B>(0); // expected-error {{of type 'void'}}
struct B { virtual ~B() = 0; };
}
namespace dr339 { // dr339: yes
template <int I> struct A { static const int value = I; };
char xxx(int);
char (&xxx(float))[2];
template<class T> A<sizeof(xxx((T)0))> f(T) {} // expected-note {{candidate}}
void test() {
A<1> a = f(0);
A<2> b = f(0.0f);
A<3> c = f("foo"); // expected-error {{no matching function}}
}
char f(int);
int f(...);
template <class T> struct conv_int {
static const bool value = sizeof(f(T())) == 1;
};
template <class T> bool conv_int2(A<sizeof(f(T()))> p);
template<typename T> A<sizeof(f(T()))> make_A();
int a[conv_int<char>::value ? 1 : -1];
bool b = conv_int2<char>(A<1>());
A<1> c = make_A<char>();
}
namespace dr340 { // dr340: yes
struct A { A(int); };
struct B { B(A, A, int); };
int x, y;
B b(A(x), A(y), 3);
}
namespace dr341 { // dr341: sup 1708
namespace A {
int n;
extern "C" int &dr341_a = n; // expected-note {{previous}} expected-note {{declared with C language linkage here}}
}
namespace B {
extern "C" int &dr341_a = dr341_a; // expected-error {{redefinition}}
}
extern "C" void dr341_b(); // expected-note {{declared with C language linkage here}}
}
int dr341_a; // expected-error {{declaration of 'dr341_a' in global scope conflicts with declaration with C language linkage}}
int dr341_b; // expected-error {{declaration of 'dr341_b' in global scope conflicts with declaration with C language linkage}}
int dr341_c; // expected-note {{declared in global scope here}}
int dr341_d; // expected-note {{declared in global scope here}}
namespace dr341 {
extern "C" int dr341_c; // expected-error {{declaration of 'dr341_c' with C language linkage conflicts with declaration in global scope}}
extern "C" void dr341_d(); // expected-error {{declaration of 'dr341_d' with C language linkage conflicts with declaration in global scope}}
namespace A { extern "C" int dr341_e; } // expected-note {{previous}}
namespace B { extern "C" void dr341_e(); } // expected-error {{redefinition of 'dr341_e' as different kind of symbol}}
}
// dr342: na
namespace dr343 { // FIXME 343: no
// FIXME: dup 1710
template<typename T> struct A {
template<typename U> struct B {};
};
// FIXME: In these contexts, the 'template' keyword is optional.
template<typename T> struct C : public A<T>::B<T> { // expected-error {{use 'template'}}
C() : A<T>::B<T>() {} // expected-error {{use 'template'}}
};
}
namespace dr344 { // dr344: dup 1435
struct A { inline virtual ~A(); };
struct B { friend A::~A(); };
}
namespace dr345 { // dr345: yes
struct A {
struct X {};
int X; // expected-note {{here}}
};
struct B {
struct X {};
};
template <class T> void f(T t) { typename T::X x; } // expected-error {{refers to non-type member 'X'}}
void f(A a, B b) {
f(b);
f(a); // expected-note {{instantiation}}
}
}
// dr346: na
namespace dr347 { // dr347: yes
struct base {
struct nested;
static int n;
static void f();
void g();
};
struct derived : base {};
struct derived::nested {}; // expected-error {{no struct named 'nested'}}
int derived::n; // expected-error {{no member named 'n'}}
void derived::f() {} // expected-error {{does not match any}}
void derived::g() {} // expected-error {{does not match any}}
}
// dr348: na
namespace dr349 { // dr349: no
struct A {
template <class T> operator T ***() {
int ***p = 0;
return p; // expected-error {{cannot initialize return object of type 'const int ***' with an lvalue of type 'int ***'}}
}
};
// FIXME: This is valid.
A a;
const int *const *const *p1 = a; // expected-note {{in instantiation of}}
struct B {
template <class T> operator T ***() {
const int ***p = 0;
return p;
}
};
// FIXME: This is invalid.
B b;
const int *const *const *p2 = b;
}
// dr351: na
namespace dr352 { // dr352: yes
namespace example1 {
namespace A {
enum E {};
template<typename R, typename A> void foo(E, R (*)(A)); // expected-note 2{{couldn't infer template argument 'R'}}
}
template<typename T> void arg(T);
template<typename T> int arg(T) = delete; // expected-note {{here}} expected-error 0-1{{extension}}
void f(A::E e) {
foo(e, &arg); // expected-error {{no matching function}}
using A::foo;
foo<int, int>(e, &arg); // expected-error {{deleted}}
}
int arg(int);
void g(A::E e) {
foo(e, &arg); // expected-error {{no matching function}}
using A::foo;
foo<int, int>(e, &arg); // ok, uses non-template
}
}
namespace contexts {
template<int I> void f1(int (&)[I]);
template<int I> void f2(int (&)[I+1]); // expected-note {{couldn't infer}}
template<int I> void f3(int (&)[I+1], int (&)[I]);
void f() {
int a[4];
int b[3];
f1(a);
f2(a); // expected-error {{no matching function}}
f3(a, b);
}
template<int I> struct S {};
template<int I> void g1(S<I>);
template<int I> void g2(S<I+1>); // expected-note {{couldn't infer}}
template<int I> void g3(S<I+1>, S<I>);
void g() {
S<4> a;
S<3> b;
g1(a);
g2(a); // expected-error {{no matching function}}
g3(a, b);
}
template<typename T> void h1(T = 0); // expected-note {{couldn't infer}}
template<typename T> void h2(T, T = 0);
void h() {
h1(); // expected-error {{no matching function}}
h1(0);
h1<int>();
h2(0);
}
template<typename T> int tmpl(T);
template<typename R, typename A> void i1(R (*)(A)); // expected-note 3{{couldn't infer}}
template<typename R, typename A> void i2(R, A, R (*)(A)); // expected-note {{not viable}}
void i() {
extern int single(int);
i1(single);
i2(0, 0, single);
extern int ambig(float), ambig(int);
i1(ambig); // expected-error {{no matching function}}
i2(0, 0, ambig);
extern void no_match(float), no_match(int);
i1(no_match); // expected-error {{no matching function}}
i2(0, 0, no_match); // expected-error {{no matching function}}
i1(tmpl); // expected-error {{no matching function}}
i2(0, 0, tmpl);
}
}
template<typename T> struct is_int;
template<> struct is_int<int> {};
namespace example2 {
template<typename T> int f(T (*p)(T)) { is_int<T>(); }
int g(int);
int g(char);
int i = f(g);
}
namespace example3 {
template<typename T> int f(T, T (*p)(T)) { is_int<T>(); }
int g(int);
char g(char);
int i = f(1, g);
}
namespace example4 {
template <class T> int f(T, T (*p)(T)) { is_int<T>(); }
char g(char);
template <class T> T g(T);
int i = f(1, g);
}
namespace example5 {
template<int I> class A {};
template<int I> void g(A<I+1>); // expected-note {{couldn't infer}}
template<int I> void f(A<I>, A<I+1>);
void h(A<1> a1, A<2> a2) {
g(a1); // expected-error {{no matching function}}
g<0>(a1);
f(a1, a2);
}
}
}
// dr353 needs an IRGen test.
namespace dr354 { // dr354: yes c++11
// FIXME: Should we allow this in C++98 too?
struct S {};
template<int*> struct ptr {}; // expected-note 0-4{{here}}
ptr<0> p0;
ptr<(int*)0> p1;
ptr<(float*)0> p2;
ptr<(int S::*)0> p3;
#if __cplusplus < 201103L
// expected-error@-5 {{does not refer to any decl}}
// expected-error@-5 {{does not refer to any decl}}
// expected-error@-5 {{does not refer to any decl}}
// expected-error@-5 {{does not refer to any decl}}
#elif __cplusplus <= 201402L
// expected-error@-10 {{must be cast}}
// ok
// expected-error@-10 {{does not match}}
// expected-error@-10 {{does not match}}
#else
// expected-error@-15 {{conversion from 'int' to 'int *' is not allowed}}
// ok
// expected-error@-15 {{'float *' is not implicitly convertible to 'int *'}}
// expected-error@-15 {{'int dr354::S::*' is not implicitly convertible to 'int *'}}
#endif
template<int*> int both();
template<int> int both();
int b0 = both<0>();
int b1 = both<(int*)0>();
#if __cplusplus < 201103L
// expected-error@-2 {{no matching function}}
// expected-note@-6 {{candidate}}
// expected-note@-6 {{candidate}}
#endif
template<int S::*> struct ptr_mem {}; // expected-note 0-4{{here}}
ptr_mem<0> m0;
ptr_mem<(int S::*)0> m1;
ptr_mem<(float S::*)0> m2;
ptr_mem<(int *)0> m3;
#if __cplusplus < 201103L
// expected-error@-5 {{cannot be converted}}
// expected-error@-5 {{is not a pointer to member constant}}
// expected-error@-5 {{cannot be converted}}
// expected-error@-5 {{cannot be converted}}
#elif __cplusplus <= 201402L
// expected-error@-10 {{must be cast}}
// ok
// expected-error@-10 {{does not match}}
// expected-error@-10 {{does not match}}
#else
// expected-error@-15 {{conversion from 'int' to 'int dr354::S::*' is not allowed}}
// ok
// expected-error@-15 {{'float dr354::S::*' is not implicitly convertible to 'int dr354::S::*'}}
// expected-error@-15 {{'int *' is not implicitly convertible to 'int dr354::S::*'}}
#endif
}
struct dr355_S; // dr355: yes
struct ::dr355_S {}; // expected-warning {{extra qualification}}
namespace dr355 { struct ::dr355_S s; }
// dr356: na
namespace dr357 { // dr357: yes
template<typename T> struct A {
void f() const; // expected-note {{const qualified}}
};
template<typename T> void A<T>::f() {} // expected-error {{does not match}}
struct B {
template<typename T> void f();
};
template<typename T> void B::f() const {} // expected-error {{does not match}}
}
namespace dr358 { // dr358: yes
extern "C" void dr358_f();
namespace N {
int var;
extern "C" void dr358_f() { var = 10; }
}
}
namespace dr359 { // dr359: yes
// Note, the example in the DR is wrong; it doesn't contain an anonymous
// union.
struct E {
union {
struct {
int x;
} s;
} v;
union {
struct { // expected-error {{extension}}
int x;
} s;
struct S { // expected-error {{types cannot be declared in an anonymous union}}
int x;
} t;
union { // expected-error {{extension}}
int u;
};
};
};
}
// dr362: na
// dr363: na
namespace dr364 { // dr364: yes
struct S {
static void f(int);
void f(char);
};
void g() {
S::f('a'); // expected-error {{call to non-static}}
S::f(0);
}
}
#if "foo" // expected-error {{invalid token}} dr366: yes
#endif
namespace dr367 { // dr367: yes
// FIXME: These diagnostics are terrible. Don't diagnose an ill-formed global
// array as being a VLA!
int a[true ? throw 0 : 4]; // expected-error 2{{variable length array}}
int b[true ? 4 : throw 0];
int c[true ? *new int : 4]; // expected-error 2{{variable length array}}
int d[true ? 4 : *new int];
#if __cplusplus < 201103L
// expected-error@-4 {{variable length array}} expected-error@-4 {{constant expression}}
// expected-error@-3 {{variable length array}} expected-error@-3 {{constant expression}}
#endif
}
namespace dr368 { // dr368: yes
template<typename T, T> struct S {}; // expected-note {{here}}
template<typename T> int f(S<T, T()> *); // expected-error {{function type}}
//template<typename T> int g(S<T, (T())> *); // FIXME: crashes clang
template<typename T> int g(S<T, true ? T() : T()> *); // expected-note {{cannot have type 'dr368::X'}}
struct X {};
int n = g<X>(0); // expected-error {{no matching}}
}
// dr370: na
namespace dr372 { // dr372: no
namespace example1 {
template<typename T> struct X {
protected:
typedef T Type; // expected-note 2{{protected}}
};
template<typename T> struct Y {};
// FIXME: These two are valid; deriving from T1<T> gives Z1 access to
// the protected member T1<T>::Type.
template<typename T,
template<typename> class T1,
template<typename> class T2> struct Z1 :
T1<T>,
T2<typename T1<T>::Type> {}; // expected-error {{protected}}
template<typename T,
template<typename> class T1,
template<typename> class T2> struct Z2 :
T2<typename T1<T>::Type>, // expected-error {{protected}}
T1<T> {};
Z1<int, X, Y> z1; // expected-note {{instantiation of}}
Z2<int, X, Y> z2; // expected-note {{instantiation of}}
}
namespace example2 {
struct X {
private:
typedef int Type; // expected-note {{private}}
};
template<typename T> struct A {
typename T::Type t; // expected-error {{private}}
};
A<X> ax; // expected-note {{instantiation of}}
}
namespace example3 {
struct A {
protected:
typedef int N; // expected-note 2{{protected}}
};
template<typename T> struct B {};
template<typename U> struct C : U, B<typename U::N> {}; // expected-error {{protected}}
template<typename U> struct D : B<typename U::N>, U {}; // expected-error {{protected}}
C<A> x; // expected-note {{instantiation of}}
D<A> y; // expected-note {{instantiation of}}
}
namespace example4 {
class A {
class B {};
friend class X;
};
struct X : A::B {
A::B mx;
class Y {
A::B my;
};
};
}
}
namespace dr373 { // dr373: no
// FIXME: This is valid.
namespace X { int dr373; } // expected-note 2{{here}}
struct dr373 { // expected-note {{here}}
void f() {
using namespace dr373::X; // expected-error {{no namespace named 'X' in 'dr373::dr373'}}
int k = dr373; // expected-error {{does not refer to a value}}
namespace Y = dr373::X; // expected-error {{no namespace named 'X' in 'dr373::dr373'}}
k = Y::dr373;
}
};
}
namespace dr374 { // dr374: yes c++11
namespace N {
template<typename T> void f();
template<typename T> struct A { void f(); };
}
template<> void N::f<char>() {}
template<> void N::A<char>::f() {}
template<> struct N::A<int> {};
#if __cplusplus < 201103L
// expected-error@-4 {{extension}} expected-note@-7 {{here}}
// expected-error@-4 {{extension}} expected-note@-7 {{here}}
// expected-error@-4 {{extension}} expected-note@-8 {{here}}
#endif
}
// dr375: dup 345
// dr376: na
namespace dr377 { // dr377: yes
enum E { // expected-error {{enumeration values exceed range of largest integer}}
a = -__LONG_LONG_MAX__ - 1, // expected-error 0-1{{extension}}
b = 2 * (unsigned long long)__LONG_LONG_MAX__ // expected-error 0-2{{extension}}
};
}
// dr378: dup 276
// dr379: na
namespace dr381 { // dr381: yes
struct A {
int a;
};
struct B : virtual A {};
struct C : B {};
struct D : B {};
struct E : public C, public D {};
struct F : public A {};
void f() {
E e;
e.B::a = 0; // expected-error {{ambiguous conversion}}
F f;
f.A::a = 1;
}
}
namespace dr382 { // dr382: yes c++11
// FIXME: Should we allow this in C++98 mode?
struct A { typedef int T; };
typename A::T t;
typename dr382::A a;
#if __cplusplus < 201103L
// expected-error@-3 {{occurs outside of a template}}
// expected-error@-3 {{occurs outside of a template}}
#endif
typename A b; // expected-error {{expected a qualified name}}
}
namespace dr383 { // dr383: yes
struct A { A &operator=(const A&); };
struct B { ~B(); };
union C { C &operator=(const C&); };
union D { ~D(); };
int check[(__is_pod(A) || __is_pod(B) || __is_pod(C) || __is_pod(D)) ? -1 : 1];
}
namespace dr384 { // dr384: yes
namespace N1 {
template<typename T> struct Base {};
template<typename T> struct X {
struct Y : public Base<T> {
Y operator+(int) const;
};
Y f(unsigned i) { return Y() + i; }
};
}
namespace N2 {
struct Z {};
template<typename T> int *operator+(T, unsigned);
}
int main() {
N1::X<N2::Z> v;
v.f(0);
}
}
namespace dr385 { // dr385: yes
struct A { protected: void f(); };
struct B : A { using A::f; };
struct C : A { void g(B b) { b.f(); } };
void h(B b) { b.f(); }
struct D { int n; }; // expected-note {{member}}
struct E : protected D {}; // expected-note 2{{protected}}
struct F : E { friend int i(E); };
int i(E e) { return e.n; } // expected-error {{protected base}} expected-error {{protected member}}
}
namespace dr387 { // dr387: yes
namespace old {
template<typename T> class number {
number(int); // expected-note 2{{here}}
friend number gcd(number &x, number &y) {}
};
void g() {
number<double> a(3), b(4); // expected-error 2{{private}}
a = gcd(a, b);
b = gcd(3, 4); // expected-error {{undeclared}}
}
}
namespace newer {
template <typename T> class number {
public:
number(int);
friend number gcd(number x, number y) { return 0; }
};
void g() {
number<double> a(3), b(4);
a = gcd(a, b);
b = gcd(3, 4); // expected-error {{undeclared}}
}
}
}
// FIXME: dr388 needs codegen test
namespace dr389 { // dr389: no
struct S {
typedef struct {} A;
typedef enum {} B;
typedef struct {} const C; // expected-note 0-2{{here}}
typedef enum {} const D; // expected-note 0-1{{here}}
};
template<typename> struct T {};
struct WithLinkage1 {};
enum WithLinkage2 {};
typedef struct {} *WithLinkage3a, WithLinkage3b;
typedef enum {} WithLinkage4a, *WithLinkage4b;
typedef S::A WithLinkage5;
typedef const S::B WithLinkage6;
typedef int WithLinkage7;
typedef void (*WithLinkage8)(WithLinkage2 WithLinkage1::*, WithLinkage5 *);
typedef T<WithLinkage5> WithLinkage9;
typedef struct {} *WithoutLinkage1; // expected-note 0-1{{here}}
typedef enum {} const WithoutLinkage2; // expected-note 0-1{{here}}
// These two types don't have linkage even though they are externally visible
// and the ODR requires them to be merged across TUs.
typedef S::C WithoutLinkage3;
typedef S::D WithoutLinkage4;
typedef void (*WithoutLinkage5)(int (WithoutLinkage3::*)(char));
#if __cplusplus >= 201103L
// This has linkage even though its template argument does not.
// FIXME: This is probably a defect.
typedef T<WithoutLinkage1> WithLinkage10;
#else
typedef int WithLinkage10; // dummy
typedef T<WithLinkage1> GoodArg1;
typedef T<WithLinkage2> GoodArg2;
typedef T<WithLinkage3a> GoodArg3a;
typedef T<WithLinkage3b> GoodArg3b;
typedef T<WithLinkage4a> GoodArg4a;
typedef T<WithLinkage4b> GoodArg4b;
typedef T<WithLinkage5> GoodArg5;
typedef T<WithLinkage6> GoodArg6;
typedef T<WithLinkage7> GoodArg7;
typedef T<WithLinkage8> GoodArg8;
typedef T<WithLinkage9> GoodArg9;
typedef T<WithoutLinkage1> BadArg1; // expected-error{{template argument uses}}
typedef T<WithoutLinkage2> BadArg2; // expected-error{{template argument uses}}
typedef T<WithoutLinkage3> BadArg3; // expected-error{{template argument uses}}
typedef T<WithoutLinkage4> BadArg4; // expected-error{{template argument uses}}
typedef T<WithoutLinkage5> BadArg5; // expected-error{{template argument uses}}
#endif
extern WithLinkage1 withLinkage1;
extern WithLinkage2 withLinkage2;
extern WithLinkage3a withLinkage3a;
extern WithLinkage3b withLinkage3b;
extern WithLinkage4a withLinkage4a;
extern WithLinkage4b withLinkage4b;
extern WithLinkage5 withLinkage5;
extern WithLinkage6 withLinkage6;
extern WithLinkage7 withLinkage7;
extern WithLinkage8 withLinkage8;
extern WithLinkage9 withLinkage9;
extern WithLinkage10 withLinkage10;
// FIXME: These are all ill-formed.
extern WithoutLinkage1 withoutLinkage1;
extern WithoutLinkage2 withoutLinkage2;
extern WithoutLinkage3 withoutLinkage3;
extern WithoutLinkage4 withoutLinkage4;
extern WithoutLinkage5 withoutLinkage5;
// OK, extern "C".
extern "C" {
extern WithoutLinkage1 dr389_withoutLinkage1;
extern WithoutLinkage2 dr389_withoutLinkage2;
extern WithoutLinkage3 dr389_withoutLinkage3;
extern WithoutLinkage4 dr389_withoutLinkage4;
extern WithoutLinkage5 dr389_withoutLinkage5;
}
// OK, defined.
WithoutLinkage1 withoutLinkageDef1;
WithoutLinkage2 withoutLinkageDef2 = WithoutLinkage2();
WithoutLinkage3 withoutLinkageDef3 = {};
WithoutLinkage4 withoutLinkageDef4 = WithoutLinkage4();
WithoutLinkage5 withoutLinkageDef5;
void use(const void *);
void use_all() {
use(&withLinkage1); use(&withLinkage2); use(&withLinkage3a); use(&withLinkage3b);
use(&withLinkage4a); use(&withLinkage4b); use(&withLinkage5); use(&withLinkage6);
use(&withLinkage7); use(&withLinkage8); use(&withLinkage9); use(&withLinkage10);
use(&withoutLinkage1); use(&withoutLinkage2); use(&withoutLinkage3);
use(&withoutLinkage4); use(&withoutLinkage5);
use(&dr389_withoutLinkage1); use(&dr389_withoutLinkage2);
use(&dr389_withoutLinkage3); use(&dr389_withoutLinkage4);
use(&dr389_withoutLinkage5);
use(&withoutLinkageDef1); use(&withoutLinkageDef2); use(&withoutLinkageDef3);
use(&withoutLinkageDef4); use(&withoutLinkageDef5);
}
void local() {
// FIXME: This is ill-formed.
extern WithoutLinkage1 withoutLinkageLocal;
}
}
namespace dr390 { // dr390: yes
template<typename T>
struct A {
A() { f(); } // expected-warning {{call to pure virt}}
virtual void f() = 0; // expected-note {{here}}
virtual ~A() = 0;
};
template<typename T> A<T>::~A() { T::error; } // expected-error {{cannot be used prior to}}
template<typename T> void A<T>::f() { T::error; } // ok, not odr-used
struct B : A<int> { // expected-note 2{{in instantiation of}}
void f() {}
} b;
}
namespace dr391 { // dr391: yes c++11
// FIXME: Should this apply to C++98 too?
class A { A(const A&); }; // expected-note 0-1{{here}}
A fa();
const A &a = fa();
#if __cplusplus < 201103L
// expected-error@-2 {{C++98 requires an accessible copy constructor}}
#endif
struct B { B(const B&) = delete; }; // expected-error 0-1{{extension}} expected-note 0-1{{here}}
B fb();
const B &b = fb();
#if __cplusplus < 201103L
// expected-error@-2 {{deleted}}
#endif
template<typename T>
struct C {
C(const C&) { T::error; }
};
C<int> fc();
const C<int> &c = fc();
}
// dr392 FIXME write codegen test
// dr394: na
namespace dr395 { // dr395: yes
struct S {
template <typename T, int N>(&operator T())[N]; // expected-error {{cannot specify any part of a return type}}
template <typename T, int N> operator(T (&)[N])(); // expected-error {{expected ')'}} expected-note {{to match this '('}} expected-error +{{}}
template <typename T> operator T *() const { return 0; }
template <typename T, typename U> operator T U::*() const { return 0; }
template <typename T, typename U> operator T (U::*)()() const { return 0; } // expected-error +{{}}
};
struct null1_t {
template <class T, class U> struct ptr_mem_fun_t {
typedef T (U::*type)();
};
template <class T, class U>
operator typename ptr_mem_fun_t<T, U>::type() const { // expected-note {{couldn't infer}}
return 0;
}
} null1;
int (S::*p)() = null1; // expected-error {{no viable conversion}}
template <typename T> using id = T; // expected-error 0-1{{extension}}
struct T {
template <typename T, int N> operator id<T[N]> &();
template <typename T, typename U> operator id<T (U::*)()>() const;
};
struct null2_t {
template<class T, class U> using ptr_mem_fun_t = T (U::*)(); // expected-error 0-1{{extension}}
template<class T, class U> operator ptr_mem_fun_t<T, U>() const { return 0; };
} null2;
int (S::*q)() = null2;
}
namespace dr396 { // dr396: yes
void f() {
auto int a(); // expected-error {{storage class on function}}
int (i); // expected-note {{previous}}
auto int (i); // expected-error {{redefinition}}
#if __cplusplus >= 201103L
// expected-error@-4 {{'auto' storage class}} expected-error@-2 {{'auto' storage class}}
#endif
}
}
// dr397: sup 1823
namespace dr398 { // dr398: yes
namespace example1 {
struct S {
static int const I = 42;
};
template <int N> struct X {};
template <typename T> void f(X<T::I> *) {}
template <typename T> void f(X<T::J> *) {}
void foo() { f<S>(0); }
}
namespace example2 {
template <int I> struct X {};
template <template <class T> class> struct Z {};
template <class T> void f(typename T::Y *) {} // expected-note 2{{substitution failure}}
template <class T> void g(X<T::N> *) {} // expected-note {{substitution failure}}
template <class T> void h(Z<T::template TT> *) {} // expected-note {{substitution failure}}
struct A {};
struct B {
int Y;
};
struct C {
typedef int N;
};
struct D {
typedef int TT;
};
void test() {
f<A>(0); // expected-error {{no matching function}}
f<B>(0); // expected-error {{no matching function}}
g<C>(0); // expected-error {{no matching function}}
h<D>(0); // expected-error {{no matching function}}
}
}
}