libstdc++-v3/testsuite/20_util/unique_ptr/assign/cv_qual.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2012-2024 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 // 20.7.1 Class template unique_ptr [unique.ptr]
  21
  22 #include <memory>
  23
  24 struct A { virtual ~A() = default; };
  25
  26 struct B : A { };
  27
  28 // Assignment from objects with different cv-qualification
  29
  30 void
  31 test01()
  32 {
  33   std::unique_ptr<A> upA;
  34
  35   std::unique_ptr<const A> cA;
  36   cA = std::move(upA);
  37   std::unique_ptr<volatile A> vA;
  38   vA = std::move(upA);
  39   std::unique_ptr<const volatile A> cvA;
  40   cvA = std::move(upA);
  41 }
  42
  43 void
  44 test02()
  45 {
  46   std::unique_ptr<B> upB;
  47
  48   std::unique_ptr<const A> cA;
  49   cA = std::move(upB);
  50   std::unique_ptr<volatile A> vA;
  51   vA = std::move(upB);
  52   std::unique_ptr<const volatile A> cvA;
  53   cvA = std::move(upB);
  54 }
  55
  56 void
  57 test03()
  58 {
  59   std::unique_ptr<A[]> upA;
  60
  61   std::unique_ptr<const A[]> cA;
  62   cA = std::move(upA);
  63   std::unique_ptr<volatile A[]> vA;
  64   vA = std::move(upA);
  65   std::unique_ptr<const volatile A[]> cvA;
  66   cvA = std::move(upA);
  67 }