libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs-2.cc

   1 // { dg-options "-funsigned-char -fshort-enums" }
   2 // { dg-do compile { target c++11 } }
   3
   4 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   5 //
   6 // Copyright (C) 2007-2019 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
  25 // Ensure that this enum has "short" as its underlying type.
  26 enum test_enum { first_selection = ((unsigned char)-1) + 1 };
  27
  28 void test01()
  29 {
  30   using std::make_unsigned;
  31   using std::is_same;
  32   using std::is_unsigned;
  33   using std::is_volatile;
  34
  35   // Positive tests.
  36   typedef make_unsigned<const unsigned int>::type       test2_type;
  37   static_assert(is_same<test2_type, const unsigned int>::value, "");
  38
  39   typedef make_unsigned<const signed int>::type         test21c_type;
  40   static_assert(is_same<test21c_type, const unsigned int>::value, "");
  41
  42   typedef make_unsigned<volatile signed int>::type      test21v_type;
  43   static_assert(is_same<test21v_type, volatile unsigned int>::value, "");
  44
  45   typedef make_unsigned<const volatile signed int>::type        test21cv_type;
  46   static_assert(is_same<test21cv_type,
  47                 const volatile unsigned int>::value, "");
  48
  49   typedef make_unsigned<const char>::type       test22_type;
  50   static_assert(is_same<test22_type, const unsigned char>::value, "");
  51
  52 #ifdef _GLIBCXX_USE_WCHAR_T
  53   typedef make_unsigned<volatile wchar_t>::type         test23_type;
  54   static_assert(is_unsigned<test23_type>::value
  55                 && is_volatile<test23_type>::value
  56                 && sizeof(test23_type) == sizeof(volatile wchar_t), "");
  57 #endif
  58
  59   typedef make_unsigned<test_enum>::type          test24_type;
  60   static_assert(is_same<test24_type, unsigned short>::value, "");
  61
  62 #ifndef __STRICT_ANSI__
  63   // GNU Extensions.
  64 #ifdef _GLIBCXX_USE_INT128
  65   typedef make_unsigned<unsigned __int128>::type  test25_type;
  66   static_assert(is_same<test25_type, unsigned __int128>::value, "");
  67
  68   typedef make_unsigned<__int128>::type           test26_type;
  69   static_assert(is_same<test26_type, unsigned __int128>::value, "");
  70 #endif
  71 #endif
  72 }