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

   1 // { dg-options "-std=gnu++11" }
   2 // { dg-do compile }
   3
   4 // 2007-06-02  Paolo Carlini  <pcarlini@suse.de>
   5 //
   6 // Copyright (C) 2007-2016 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23 #include <type_traits>
  24 #include <testsuite_tr1.h>
  25
  26 void test01()
  27 {
  28   using std::add_lvalue_reference;
  29   using std::is_same;
  30   using namespace __gnu_test;
  31
  32   static_assert(is_same<add_lvalue_reference<int>::type, int&>::value, "");
  33   static_assert(is_same<add_lvalue_reference<int&>::type, int&>::value, "" );
  34   static_assert(is_same<add_lvalue_reference<const int>::type,
  35                 const int&>::value, "");
  36   static_assert(is_same<add_lvalue_reference<int*>::type, int*&>::value, "");
  37   static_assert(is_same<add_lvalue_reference<ClassType&>::type,
  38                 ClassType&>::value, "");
  39   static_assert(is_same<add_lvalue_reference<ClassType>::type,
  40                 ClassType&>::value, "");
  41   static_assert(is_same<add_lvalue_reference<int(int)>::type,
  42                 int(&)(int)>::value, "");
  43   static_assert(is_same<add_lvalue_reference<int&&>::type, int&>::value, "");
  44   static_assert(is_same<add_lvalue_reference<ClassType&&>::type,
  45                 ClassType&>::value, "");
  46   static_assert(is_same<add_lvalue_reference<void>::type, void>::value, "");
  47   static_assert(is_same<add_lvalue_reference<const void>::type,
  48                 const void>::value, "");
  49   static_assert(is_same<add_lvalue_reference<bool(int) const>::type,
  50                 bool(int) const>::value, "");
  51   static_assert(is_same<add_lvalue_reference<bool(int) &>::type,
  52                 bool(int) &>::value, "");
  53   static_assert(is_same<add_lvalue_reference<bool(int) const &&>::type,
  54                 bool(int) const &&>::value, "");
  55   static_assert(is_same<add_lvalue_reference<bool(int)>::type,
  56                 bool(&)(int)>::value, "");
  57 }