libstdc++-v3/testsuite/20_util/any/assign/2.cc

   1 // { dg-do run { target c++17 } }
   2
   3 // Copyright (C) 2014-2023 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 #include <any>
  21 #include <testsuite_hooks.h>
  22
  23 using std::any;
  24 using std::any_cast;
  25
  26 bool moved = false;
  27 bool copied = false;
  28
  29 struct X
  30 {
  31   X() = default;
  32   X(const X&) { copied = true; }
  33   X(X&&) { moved = true; }
  34 };
  35
  36 struct X2
  37 {
  38   X2() = default;
  39   X2(const X2&) { copied = true; }
  40   X2(X2&&) noexcept { moved = true; }
  41 };
  42
  43 void test01()
  44 {
  45   moved = false;
  46   X x;
  47   any a1;
  48   a1 = x;
  49   VERIFY(moved == false);
  50   any a2;
  51   copied = false;
  52   a2 = std::move(x);
  53   VERIFY(moved == true);
  54   VERIFY(copied == false);
  55 }
  56
  57 void test02()
  58 {
  59   moved = false;
  60   X x;
  61   any a1;
  62   a1 = x;
  63   VERIFY(moved == false);
  64   any a2;
  65   copied = false;
  66   a2 = std::move(a1);
  67   VERIFY(moved == false);
  68   VERIFY(copied == false);
  69 }
  70
  71 void test03()
  72 {
  73   moved = false;
  74   X2 x;
  75   any a1;
  76   a1 = x;
  77   VERIFY(copied && moved);
  78   any a2;
  79   moved = false;
  80   copied = false;
  81   a2 = std::move(a1);
  82   VERIFY(moved == true);
  83   VERIFY(copied == false);
  84 }
  85
  86 int main()
  87 {
  88   test01();
  89   test02();
  90   test03();
  91 }