llvm-project/clang/test/SemaTemplate/injected-class-name.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s
template<typename T>
struct X {
  X<T*> *ptr;
};

X<int> x;

template<>
struct X<int***> {
  typedef X<int***> *ptr;
};

X<float>::X<int> xi = x; // expected-error{{qualified reference to 'X' is a constructor name rather than a template name}}
void f() {
  X<float>::X<int> xi = x; // expected-error{{qualified reference to 'X' is a constructor name rather than a template name}}
}

// [temp.local]p1:

// FIXME: test template template parameters
template<typename T, typename U>
struct X0 {
  typedef T type;
  typedef U U_type;
  typedef U_type U_type2;

  void f0(const X0&); // expected-note{{here}}
  void f0(X0&);
  void f0(const X0<T, U>&); // expected-error{{redecl}}

  void f1(const X0&); // expected-note{{here}}
  void f1(X0&);
  void f1(const X0<type, U_type2>&); // expected-error{{redecl}}

  void f2(const X0&); // expected-note{{here}}
  void f2(X0&);
  void f2(const ::X0<type, U_type2>&); // expected-error{{redecl}}
};

template<typename T, T N>
struct X1 {
  void f0(const X1&); // expected-note{{here}}
  void f0(X1&);
  void f0(const X1<T, N>&); // expected-error{{redecl}}
};

namespace pr6326 {
  template <class T> class A {
    friend class A;
  };
  template class A<int>;
}

namespace ForwardDecls {
  template<typename T>
  struct X;

  template<typename T>
  struct X {
    typedef T foo;
    typedef X<T> xt;
    typename xt::foo *t;
  };
}

namespace ConflictingRedecl {
  template<typename> struct Nested {
    template<typename> struct Nested; // expected-error {{member 'Nested' has the same name as its class}}
  };
}