libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs-4.cc

   1 // { dg-do compile { target c++11 } }
   2 // { dg-require-cstdint "" }
   3
   4 // Copyright (C) 2014-2017 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <type_traits>
  22
  23 // libstdc++/60326
  24
  25 using namespace std;
  26 #ifdef _GLIBCXX_USE_WCHAR_T
  27 using wchar_signed = make_signed<wchar_t>::type;
  28 using wchar_unsigned = make_unsigned<wchar_t>::type;
  29 static_assert( !is_same<wchar_signed, wchar_unsigned>::value, "wchar_t" );
  30 #endif
  31 static_assert( is_signed<make_signed<char16_t>::type>::value, "char16_t");
  32 static_assert( is_signed<make_signed<char32_t>::type>::value, "char32_t");