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      1 //===----------------------------------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is dual licensed under the MIT and the University of Illinois Open
      6 // Source Licenses. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 // <memory>
     11 
     12 // template<class T> class shared_ptr
     13 // {
     14 // public:
     15 //     typedef T element_type;
     16 //     typedef weak_ptr<T> weak_type; // C++17
     17 //     ...
     18 // };
     19 
     20 #include <memory>
     21 
     22 #include "test_macros.h"
     23 
     24 struct A;  // purposefully incomplete
     25 
     26 int main()
     27 {
     28     static_assert((std::is_same<std::shared_ptr<A>::element_type, A>::value), "");
     29 #if TEST_STD_VER > 14
     30     static_assert((std::is_same<std::shared_ptr<A>::weak_type, std::weak_ptr<A>>::value), "");
     31 #endif
     32 }
     33