libstdc++-v3/testsuite/27_io/basic_streambuf/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 // 27.5.2 template class basic_streambuf
  22
  23 #include <streambuf>
  24 #include <ostream>
  25 #include <testsuite_hooks.h>
  26
  27 // libstdc++/3599
  28 class testbuf : public std::streambuf
  29 {
  30 public:
  31   typedef std::streambuf::traits_type traits_type;
  32
  33   testbuf() : std::streambuf() { }
  34
  35 protected:
  36   int_type
  37   overflow(int_type c __attribute__((unused)) = traits_type::eof())
  38   { return traits_type::not_eof(0); }
  39 };
  40
  41 void
  42 test07()
  43 {
  44   testbuf ob;
  45   std::ostream out(&ob);
  46
  47   out << "gasp";
  48   VERIFY( out.good() );
  49
  50   out << std::endl;
  51   VERIFY( out.good() );
  52 }
  53
  54 int main()
  55 {
  56   test07();
  57   return 0;
  58 }