libstdc++-v3/testsuite/experimental/any/cons/4.cc

   1 // { dg-options "-std=gnu++14" }
   2 // { dg-do run }
   3
   4 // Copyright (C) 2014 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 <experimental/any>
  22 #include <memory>
  23 #include <testsuite_hooks.h>
  24
  25 using std::experimental::any;
  26
  27 struct NotSmall
  28 {
  29   char c[64];  // prevent small-object optimization
  30 };
  31
  32 struct T1
  33 {
  34   using allocator_type = std::allocator<char>;
  35
  36   T1() = default;
  37   T1(const T1&) : used_alloc(false) { }
  38   T1(const T1&, const allocator_type&) : used_alloc(true) { }
  39
  40   bool used_alloc;
  41
  42   NotSmall x;
  43 };
  44
  45 struct T2
  46 {
  47   using allocator_type = std::allocator<char>;
  48
  49   T2() = default;
  50   T2(const T2&) : used_alloc(false) { }
  51   T2(std::allocator_arg_t, const allocator_type&, const T2&) : used_alloc(true)
  52   { }
  53
  54   bool used_alloc;
  55
  56   NotSmall x;
  57 };
  58
  59 bool test [[gnu::unused]] = true;
  60
  61 void test01()
  62 {
  63   any x1(std::allocator_arg, std::allocator<char>{}, T1{});
  64   VERIFY( std::experimental::any_cast<T1&>(x1).used_alloc );
  65
  66   any x2(std::allocator_arg, std::allocator<char>{}, T2{});
  67   VERIFY( std::experimental::any_cast<T2&>(x2).used_alloc );
  68 }
  69
  70 int main()
  71 {
  72   test01();
  73 }