libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/3599.cc

   1 // 1999-10-11 bkoz
   2
   3 // Copyright (C) 1999-2021 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20
  21 #include <fstream>
  22 #include <ostream>
  23 #include <testsuite_hooks.h>
  24
  25 // libstdc++/3599
  26 class testbuf : public std::filebuf
  27 {
  28 public:
  29   typedef std::filebuf::traits_type traits_type;
  30
  31   testbuf() : std::filebuf() { }
  32
  33 protected:
  34   int_type
  35   overflow(int_type c __attribute__((unused)) = traits_type::eof())
  36   { return traits_type::not_eof(0); }
  37 };
  38
  39 void
  40 test07()
  41 {
  42   testbuf ob;
  43   std::ostream out(&ob);
  44
  45   out << "gasp";
  46   VERIFY(out.good());
  47
  48   out << std::endl;
  49   VERIFY(out.good());
  50 }
  51
  52 int main()
  53 {
  54   test07();
  55   return 0;
  56 }