libstdc++-v3/testsuite/20_util/shared_ptr/observers/array.cc

   1 // { dg-do run { target c++11 } }
   2 // { dg-require-effective-target hosted }
   3
   4 // Copyright (C) 2016-2024 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <memory>
  22 #include <testsuite_hooks.h>
  23
  24 struct A
  25 {
  26   int i = 0;
  27 };
  28
  29 // C++17 20.11.2.2.5 shared_ptr observers [util.smartptr.shared.obs]
  30
  31 // get
  32 void
  33 test01()
  34 {
  35   A * const a = new A[2];
  36   const std::shared_ptr<A[2]> p(a);
  37   VERIFY( p.get() == a );
  38   static_assert( noexcept(p.get()), "non-throwing" );
  39 }
  40
  41 // get
  42 void
  43 test02()
  44 {
  45   A * const a = new A[2];
  46   const std::shared_ptr<A[]> p(a);
  47   VERIFY( p.get() == a );
  48   static_assert( noexcept(p.get()), "non-throwing" );
  49 }
  50
  51 // operator[]
  52 void
  53 test03()
  54 {
  55   A * const a = new A[2];
  56   const std::shared_ptr<A[2]> p(a);
  57   VERIFY( &p[0] == a );
  58   static_assert( noexcept(p[0]), "non-throwing" );
  59 }
  60
  61 // operator[]
  62 void
  63 test04()
  64 {
  65   A * const a = new A[2];
  66   const std::shared_ptr<A[]> p(a);
  67   VERIFY( &p[0] == a );
  68   static_assert( noexcept(p[0]), "non-throwing" );
  69 }
  70
  71 int
  72 main()
  73 {
  74   test01();
  75   test02();
  76   test03();
  77   test04();
  78 }