libstdc++-v3/testsuite/20_util/add_const/value.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2013-2020 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 <type_traits>
  21 #include <testsuite_tr1.h>
  22
  23 void test01()
  24 {
  25   using std::add_const;
  26   using std::is_same;
  27   using namespace __gnu_test;
  28
  29   static_assert(is_same<add_const<int>::type, const int>::value, "");
  30   static_assert(is_same<add_const<volatile int>::type,
  31                 const volatile int>::value, "");
  32   static_assert(is_same<add_const<int*>::type, int* const>::value, "");
  33   static_assert(is_same<add_const<int&>::type, int&>::value, "");
  34   static_assert(is_same<add_const<int (int)>::type, int (int)>::value, "");
  35   static_assert(is_same<add_const<const int>::type, const int>::value, "");
  36   static_assert(is_same<add_const<ClassType>::type,
  37                 const ClassType>::value, "");
  38   static_assert(is_same<add_const<volatile ClassType>::type,
  39                 const volatile ClassType>::value, "");
  40   static_assert(is_same<add_const<ClassType*>::type,
  41                 ClassType* const>::value, "");
  42   static_assert(is_same<add_const<ClassType&>::type, ClassType&>::value, "");
  43   static_assert(is_same<add_const<ClassType (ClassType)>::type,
  44                 ClassType (ClassType)>::value, "");
  45   static_assert(is_same<add_const<const ClassType>::type,
  46                 const ClassType>::value, "");
  47 }