81 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s2template<typename T>3class X0 {4 friend T;5};6 7class Y1 { };8enum E1 { };9X0<Y1> x0a;10X0<Y1 *> x0b;11X0<int> x0c;12X0<E1> x0d;13 14template<typename T>15class X1 {16 friend typename T::type; // expected-error{{no type named 'type' in 'Y1'}}17};18 19struct Y2 {20 struct type { };21};22 23struct Y3 {24 typedef int type;25};26 27X1<Y2> x1a;28X1<Y3> x1b;29X1<Y1> x1c; // expected-note{{in instantiation of template class 'X1<Y1>' requested here}}30 31template<typename T> class B;32 33template<typename T>34class A {35 T x;36public:37 class foo {};38 static int y;39 template <typename S> friend class B<S>::ty; // expected-warning {{dependent nested name specifier 'B<S>' for friend class declaration is not supported}}40};41 42template<typename T> class B { typedef int ty; };43 44template<> class B<int> {45 class ty {46 static int f(A<int> &a) { return a.y; } // ok, befriended47 };48};49int f(A<char> &a) { return a.y; } // FIXME: should be an error50 51struct {52 // Ill-formed53 int friend; // expected-error {{'friend' must appear first in a non-function declaration}}54 unsigned friend int; // expected-error {{'friend' must appear first in a non-function declaration}}55 const volatile friend int; // expected-error {{'friend' must appear first in a non-function declaration}} \56 // expected-error {{'const' is invalid in friend declarations}} \57 // expected-error {{'volatile' is invalid in friend declarations}}58 int59 friend; // expected-error {{'friend' must appear first in a non-function declaration}}60 friend const int; // expected-error {{'const' is invalid in friend declarations}}61 friend volatile int; // expected-error {{'volatile' is invalid in friend declarations}}62 template <typename T> friend const class X; // expected-error {{'const' is invalid in friend declarations}}63 // C++ doesn't have restrict and _Atomic, but they're both the same sort64 // of qualifier.65 typedef int *PtrToInt;66 friend __restrict PtrToInt; // expected-error {{'restrict' is invalid in friend declarations}} \67 // expected-error {{restrict requires a pointer or reference}}68 friend _Atomic int; // expected-error {{'_Atomic' is invalid in friend declarations}}69 70 // OK71 int friend foo(void);72 const int friend foo2(void);73 friend int;74 friend75 76 float;77 template<typename T> friend class A<T>::foo; // expected-warning {{not supported}}78} a;79 80void testA() { (void)sizeof(A<int>); }81