llvm-project/clang/test/SemaTemplate/ms-function-specialization-class-scope.cpp

// RUN: %clang_cc1 -fms-extensions -fsyntax-only -verify %s
// RUN: %clang_cc1 -fms-extensions -fdelayed-template-parsing -fsyntax-only -verify %s


class A {
public:
	template <class U>
    A(U p) {
	}
	template <>
    A(int p) { // expected-warning{{explicit specialization of 'A' within class scope is a Microsoft extension}}
	}
	
	template <class U>
    void f(U p) { 
	}

	template <>
    void f(int p) { // expected-warning{{explicit specialization of 'f' within class scope is a Microsoft extension}}
	}

	void f(int p) { 
    }
};

void test1()
{
   A a(3);
   char* b ;
   a.f(b);
   a.f<int>(99);
   a.f(100);
}




template <class T>
class B {
public:
	template <class U>
    B(U p) { 
	}
	template <>
    B(int p) { // expected-warning{{explicit specialization of 'B<T>' within class scope is a Microsoft extension}}
	}
	
	template <class U>
    void f(U p) {
	  T y = 9;
	}


    template <>
    void f(int p) { // expected-warning{{explicit specialization of 'f' within class scope is a Microsoft extension}}
	  T a = 3;
	}

	void f(int p) { 
 	  T a = 3;
    }
};

void test2()
{
   B<char> b(3);
   char* ptr;
   b.f(ptr);
   b.f<int>(99);
   b.f(100);
}


namespace PR12709 {

template<class T>
class TemplateClass {
  void member_function() {
    specialized_member_template<false>();
  }

  template<bool b>
  void specialized_member_template() {}

  template<>
  void specialized_member_template<false>() {}  // expected-warning{{explicit specialization of 'specialized_member_template' within class scope is a Microsoft extension}}
};

void f() {
  TemplateClass<int> t;
}

}