libstdc++-v3/testsuite/20_util/any/modifiers/92156.cc

   1 // { dg-do run { target c++17 } }
   2 // { dg-options "-Wno-init-list-lifetime" }
   3
   4 // Copyright (C) 2020-2023 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 <any>
  22 #include <utility>
  23 #include <tuple>
  24 #include <testsuite_hooks.h>
  25
  26 void
  27 test01()
  28 {
  29   std::any a;
  30   a.emplace<std::any>(5);
  31   VERIFY( std::any_cast<int>(std::any_cast<std::any>(a)) == 5 );
  32
  33   std::any b;
  34   b.emplace<std::any>({1});
  35   (void) std::any_cast<std::initializer_list<int>>(std::any_cast<std::any>(b));
  36 }
  37
  38 void
  39 test02()
  40 {
  41   std::any p;
  42   p.emplace<std::pair<std::any, std::any>>(1, 1);
  43   auto pt = std::any_cast<std::pair<std::any, std::any>>(p);
  44   VERIFY( std::any_cast<int>(pt.first) == 1 );
  45   VERIFY( std::any_cast<int>(pt.second) == 1 );
  46
  47   std::any t;
  48   t.emplace<std::tuple<std::any>>(1);
  49   auto tt = std::any_cast<std::tuple<std::any>>(t);
  50   VERIFY( std::any_cast<int>(std::get<0>(tt)) == 1 );
  51 }
  52
  53 int main()
  54 {
  55   test01();
  56   test02();
  57 }