libstdc++-v3/testsuite/27_io/basic_ostream/put/char/1.cc

   1 // 2003-09-22  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003-2019 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 // 27.6.2.6 Unformatted output functions
  21 //
  22 // _GLIBCXX_RESOLVE_LIB_DEFECTS
  23 // DR 60. What is a formatted input function?
  24 // basic_ostream::put(char_type) is an unformatted output function.
  25 // DR 63. Exception-handling policy for unformatted output.
  26 // Unformatted output functions should catch exceptions thrown
  27 // from streambuf members.
  28
  29 #include <ostream>
  30 #include <streambuf>
  31 #include <testsuite_hooks.h>
  32
  33 class Buf : public std::streambuf
  34 {
  35 protected:
  36   virtual int_type
  37   overflow(int_type = traits_type::eof())
  38   { throw 0; }
  39 };
  40
  41 void test01()
  42 {
  43   Buf buf;
  44   std::ostream os(&buf);
  45
  46   VERIFY( os.good() );
  47
  48   os.put('a');
  49
  50   VERIFY( os.rdstate() == std::ios_base::badbit );
  51
  52   os.clear();
  53   os.exceptions(std::ios_base::badbit);
  54
  55   try
  56     {
  57       os.put('b');
  58       VERIFY( false );
  59     }
  60   catch (int)
  61     {
  62       VERIFY( os.rdstate() == std::ios_base::badbit );
  63     }
  64 }
  65
  66 int main()
  67 {
  68   test01();
  69   return 0;
  70 }