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

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   4 //
   5 // Copyright (C) 2007 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 2, 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 COPYING.  If not, write to the Free
  20 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  21 // USA.
  22
  23 #include <cstdlib>
  24 #include <type_traits>
  25 #include <testsuite_hooks.h>
  26
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   using std::decay;
  31   using std::is_same;
  32
  33   // Positive tests.
  34   typedef decay<bool>::type             test1_type;
  35   VERIFY( (is_same<test1_type, bool>::value) );
  36
  37   typedef decay<const int>::type        test2_type;
  38   VERIFY( (is_same<test2_type, const int>::value) );
  39
  40   typedef decay<int[4]>::type           test3_type;
  41   VERIFY( (is_same<test3_type, std::remove_extent<int[4]>::type*>::value) );
  42
  43   typedef void (fn_type) ();
  44   typedef decay<fn_type>::type          test4_type;
  45   VERIFY( (is_same<test4_type, std::add_pointer<fn_type>::type>::value) );
  46 }
  47
  48 int main()
  49 {
  50   test01();
  51   return 0;
  52 }