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

   1 // { dg-do compile { target c++11 } }
   2
   3 // 2007-06-02  Paolo Carlini  <pcarlini@suse.de>
   4 //
   5 // Copyright (C) 2007-2019 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12 //
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 #include <type_traits>
  23 #include <testsuite_tr1.h>
  24
  25 void test01()
  26 {
  27   using std::add_lvalue_reference;
  28   using std::is_same;
  29   using namespace __gnu_test;
  30
  31   static_assert(is_same<add_lvalue_reference<int>::type, int&>::value, "");
  32   static_assert(is_same<add_lvalue_reference<int&>::type, int&>::value, "" );
  33   static_assert(is_same<add_lvalue_reference<const int>::type,
  34                 const int&>::value, "");
  35   static_assert(is_same<add_lvalue_reference<int*>::type, int*&>::value, "");
  36   static_assert(is_same<add_lvalue_reference<ClassType&>::type,
  37                 ClassType&>::value, "");
  38   static_assert(is_same<add_lvalue_reference<ClassType>::type,
  39                 ClassType&>::value, "");
  40   static_assert(is_same<add_lvalue_reference<int(int)>::type,
  41                 int(&)(int)>::value, "");
  42   static_assert(is_same<add_lvalue_reference<int&&>::type, int&>::value, "");
  43   static_assert(is_same<add_lvalue_reference<ClassType&&>::type,
  44                 ClassType&>::value, "");
  45   static_assert(is_same<add_lvalue_reference<void>::type, void>::value, "");
  46   static_assert(is_same<add_lvalue_reference<const void>::type,
  47                 const void>::value, "");
  48   static_assert(is_same<add_lvalue_reference<bool(int) const>::type,
  49                 bool(int) const>::value, "");
  50   static_assert(is_same<add_lvalue_reference<bool(int) &>::type,
  51                 bool(int) &>::value, "");
  52   static_assert(is_same<add_lvalue_reference<bool(int) const &&>::type,
  53                 bool(int) const &&>::value, "");
  54   static_assert(is_same<add_lvalue_reference<bool(int)>::type,
  55                 bool(&)(int)>::value, "");
  56 }