libstdc++-v3/testsuite/experimental/memory/shared_ptr/observers/operators.cc

   1 // { dg-do run { target c++14 } }
   2
   3 // Copyright (C) 2015-2016 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // 8.2.1 Class template shared_ptr [memory.smartptr.shared]
  21
  22 #include <experimental/memory>
  23 #include <testsuite_hooks.h>
  24
  25 struct A
  26 {
  27   A() : i() {}
  28   int i;
  29 };
  30
  31 // 8.2.1.2 shared_ptr observers [memory.smartptr.shared.obs]
  32
  33 // get
  34 void
  35 test01()
  36 {
  37   A * const a = new A[5];
  38   const std::experimental::shared_ptr<A[5]> p(a);
  39   VERIFY( p.get() == a );
  40 }
  41
  42 // operator []
  43 int
  44 test02()
  45 {
  46   A * p = new A[5];
  47   std::experimental::shared_ptr<A[5]> a(p);
  48
  49   for(int j = 0; j < 5; j++)
  50   { a[j].i = j; }
  51
  52   VERIFY(a.get() == p);
  53   VERIFY(a.use_count() == 1);
  54
  55   for(int j = 0; j < 5; j++)
  56   { VERIFY(a[j].i == j); }
  57
  58   return 0;
  59 }
  60
  61 // operator*
  62 void
  63 test03()
  64 {
  65   A * const a = new A[5];
  66   const std::experimental::shared_ptr<A[5]> p(a);
  67   VERIFY( p.get() == a );
  68 }
  69
  70 // operator->
  71 void
  72 test04()
  73 {
  74   A * const a = new A[5];
  75   const std::experimental::shared_ptr<A[5]> p(a);
  76   VERIFY( &p[0].i == &a[0].i );
  77 }
  78
  79 int
  80 main()
  81 {
  82   test01();
  83   test02();
  84   test03();
  85   test04();
  86   return 0;
  87 }