libstdc++-v3/testsuite/21_strings/basic_string/element_access/wchar_t/empty.cc

   1 // Copyright (C) 2004-2020 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8 //
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17 //
  18
  19 #include <string>
  20 #include <testsuite_hooks.h>
  21
  22 // as per 21.3.4
  23 int main()
  24 {
  25   {
  26     std::wstring empty;
  27     wchar_t c = empty[0];
  28     VERIFY( c == wchar_t() );
  29   }
  30
  31   {
  32     const std::wstring empty;
  33     wchar_t c = empty[0];
  34     VERIFY( c == wchar_t() );
  35   }
  36   return 0;
  37 }