libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs-1.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   4 //
   5 // Copyright (C) 2007, 2008, 2009 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_hooks.h>
  24
  25 enum test_enum { first_selection };
  26
  27 void test01()
  28 {
  29   bool test __attribute__((unused)) = true;
  30   using std::make_signed;
  31   using std::is_same;
  32   using std::is_signed;
  33
  34   // Positive tests.
  35   typedef make_signed<const int>::type          test2_type;
  36   VERIFY( (is_same<test2_type, const int>::value) );
  37
  38   typedef make_signed<const unsigned int>::type         test21c_type;
  39   VERIFY( (is_same<test21c_type, const signed int>::value) );
  40
  41   typedef make_signed<volatile unsigned int>::type      test21v_type;
  42   VERIFY( (is_same<test21v_type, volatile signed int>::value) );
  43
  44   typedef make_signed<const volatile unsigned int>::type        test21cv_type;
  45   VERIFY( (is_same<test21cv_type, const volatile signed int>::value) );
  46
  47   typedef make_signed<const char>::type         test22_type;
  48   VERIFY( (is_same<test22_type, const signed char>::value) );
  49
  50 #ifdef _GLIBCXX_USE_WCHAR_T
  51   typedef make_signed<volatile wchar_t>::type   test23_type;
  52   VERIFY( (is_same<test23_type, volatile signed wchar_t>::value) );
  53 #endif
  54
  55   // Chapter 48, chapter 20. Smallest rank such that new signed type same size.
  56   typedef make_signed<test_enum>::type          test25_type;
  57   VERIFY( is_signed<test25_type>::value );
  58   VERIFY( sizeof(test25_type) == sizeof(test_enum) );
  59 }
  60
  61 int main()
  62 {
  63   test01();
  64   return 0;
  65 }