llvm-project/clang/test/SemaTemplate/friend-template.cpp

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// RUN: clang-cc -fsyntax-only -verify %s
// PR5057
namespace std {
class X {
public:
template<typename T>
friend struct Y;
};
}
namespace std {
template<typename T>
struct Y
{
};
}
namespace N {
template<typename T> void f1(T) { } // expected-note{{here}}
class X {
template<typename T> friend void f0(T);
template<typename T> friend void f1(T);
};
template<typename T> void f0(T) { }
template<typename T> void f1(T) { } // expected-error{{redefinition}}
}
// PR4768
template<typename T>
struct X0 {
template<typename U> friend struct X0;
};
template<typename T>
struct X0<T*> {
template<typename U> friend struct X0;
};
template<>
struct X0<int> {
template<typename U> friend struct X0;
};
template<typename T>
struct X1 {
template<typename U> friend void f2(U);
template<typename U> friend void f3(U);
};
template<typename U> void f2(U);
X1<int> x1i;
template<> void f2(int);
// FIXME: Should this declaration of f3 be required for the specialization of
// f3<int> (further below) to work? GCC and EDG don't require it, we do...
template<typename U> void f3(U);
template<> void f3(int);