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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 // shared_ptr
     13 
     14 // explicit operator bool() const;
     15 
     16 #include <memory>
     17 #include <cassert>
     18 
     19 int main()
     20 {
     21     {
     22     const std::shared_ptr<int> p(new int(32));
     23     assert(p);
     24     }
     25     {
     26     const std::shared_ptr<int> p;
     27     assert(!p);
     28     }
     29 }
     30