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

   1 // { dg-options "-std=gnu++11 -funsigned-char -fshort-enums" }
   2 // { dg-options "-std=gnu++11 -funsigned-char -fshort-enums -Wl,--no-enum-size-warning" { target arm*-*-linux-* } }
   3 // { dg-do compile }
   4
   5 // 2007-05-03  Benjamin Kosnik  <bkoz@redhat.com>
   6 //
   7 // Copyright (C) 2007-2016 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14 //
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24 #include <type_traits>
  25
  26 // Ensure that this enum has "short" as its underlying type.
  27 enum test_enum { first_selection = ((unsigned char)-1) + 1 };
  28
  29 void test01()
  30 {
  31   using std::make_signed;
  32   using std::is_same;
  33   using std::is_signed;
  34   using std::is_volatile;
  35
  36   // Positive tests.
  37   typedef make_signed<const int>::type          test2_type;
  38   static_assert(is_same<test2_type, const int>::value, "");
  39
  40   typedef make_signed<const unsigned int>::type         test21c_type;
  41   static_assert(is_same<test21c_type, const signed int>::value, "");
  42
  43   typedef make_signed<volatile unsigned int>::type      test21v_type;
  44   static_assert(is_same<test21v_type, volatile signed int>::value, "");
  45
  46   typedef make_signed<const volatile unsigned int>::type        test21cv_type;
  47   static_assert(is_same<test21cv_type,
  48                 const volatile signed int>::value, "");
  49
  50   typedef make_signed<const char>::type         test22_type;
  51   static_assert(is_same<test22_type, const signed char>::value, "");
  52
  53 #ifdef _GLIBCXX_USE_WCHAR_T
  54   typedef make_signed<volatile wchar_t>::type   test23_type;
  55   static_assert(is_signed<test23_type>::value
  56                  && is_volatile<test23_type>::value
  57                  && sizeof(test23_type) == sizeof(volatile wchar_t), "");
  58 #endif
  59
  60   typedef make_signed<test_enum>::type          test24_type;
  61   static_assert(is_same<test24_type, short>::value, "");
  62
  63 #ifndef __STRICT_ANSI__
  64   // GNU Extensions.
  65 #ifdef _GLIBCXX_USE_INT128
  66   typedef make_signed<unsigned __int128>::type  test25_type;
  67   static_assert(is_same<test25_type, __int128>::value, "");
  68
  69   typedef make_signed<__int128>::type           test26_type;
  70   static_assert(is_same<test26_type, __int128>::value, "");
  71 #endif
  72 #endif
  73 }