libstdc++-v3/testsuite/20_util/remove_cvref/value_ext.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2018-2020 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::__remove_cvref_t;
  26   using std::is_same;
  27   using namespace __gnu_test;
  28
  29   static_assert(is_same<__remove_cvref_t<const volatile int>,
  30                         int>::value, "");
  31   static_assert(is_same<__remove_cvref_t<const volatile int*>,
  32                         const volatile int*>::value, "");
  33   static_assert(is_same<__remove_cvref_t<const volatile int&>,
  34                         int>::value, "");
  35   static_assert(is_same<__remove_cvref_t<const volatile int&&>,
  36                         int>::value, "");
  37   static_assert(is_same<__remove_cvref_t<const volatile ClassType>,
  38                         ClassType>::value, "");
  39   static_assert(is_same<__remove_cvref_t<const volatile ClassType*>,
  40                         const volatile ClassType*>::value, "");
  41   static_assert(is_same<__remove_cvref_t<const volatile ClassType&>,
  42                         ClassType>::value, "");
  43   static_assert(is_same<__remove_cvref_t<const volatile ClassType&&>,
  44                         ClassType>::value, "");
  45   static_assert(is_same<__remove_cvref_t<const int(&)[3]>,
  46                         int[3]>::value, "");
  47   static_assert(is_same<__remove_cvref_t<const int(&)()>,
  48                         const int()>::value, "");
  49 }