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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 #include <memory>
     11 #include <string>
     12 #include <cassert>
     13 
     14 //    The only way to create an unique_ptr<T[]> is to default construct them.
     15 
     16 class foo {
     17 public:
     18     foo () : val_(3) {}
     19     int get () const { return val_; }
     20 private:
     21     int val_;
     22     };
     23 
     24 int main()
     25 {
     26 #if _LIBCPP_STD_VER > 11
     27     {
     28     auto p1 = std::make_unique<int[]>(5);
     29     for ( int i = 0; i < 5; ++i )
     30         assert ( p1[i] == 0 );
     31     }
     32 
     33     {
     34     auto p2 = std::make_unique<std::string[]>(5);
     35     for ( int i = 0; i < 5; ++i )
     36         assert ( p2[i].size () == 0 );
     37     }
     38 
     39     {
     40     auto p3 = std::make_unique<foo[]>(7);
     41     for ( int i = 0; i < 7; ++i )
     42         assert ( p3[i].get () == 3 );
     43     }
     44 #endif  // _LIBCPP_STD_VER > 11
     45 }
     46