libstdc++-v3/testsuite/20_util/logical_traits/requirements/typedefs.cc

   1 // { dg-options "-std=gnu++17" }
   2 //
   3 // Copyright (C) 2015-2017 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 //
  21 // NB: This file is for testing type_traits with NO OTHER INCLUDES.
  22
  23 #include <type_traits>
  24
  25 // { dg-do compile }
  26
  27 void test01()
  28 {
  29   // Check for required typedefs
  30   typedef std::conjunction<std::true_type, std::true_type>      test_type;
  31   typedef test_type::value_type               value_type;
  32   typedef test_type::type                     type;
  33   typedef test_type::type::value_type         type_value_type;
  34   typedef test_type::type::type               type_type;
  35 }
  36
  37 void test02()
  38 {
  39   // Check for required typedefs
  40   typedef std::disjunction<std::false_type, std::true_type>      test_type;
  41   typedef test_type::value_type               value_type;
  42   typedef test_type::type                     type;
  43   typedef test_type::type::value_type         type_value_type;
  44   typedef test_type::type::type               type_type;
  45 }
  46
  47 void test03()
  48 {
  49   // Check for required typedefs
  50   typedef std::negation<std::false_type>      test_type;
  51   typedef test_type::value_type               value_type;
  52   typedef test_type::type                     type;
  53   typedef test_type::type::value_type         type_value_type;
  54   typedef test_type::type::type               type_type;
  55 }