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

   1 // 2003-09-22  Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003-2023 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::write(const char_type*, streamsize) is an unformatted
  25 // output function.
  26 // DR 63. Exception-handling policy for unformatted output.
  27 // Unformatted output functions should catch exceptions thrown
  28 // from streambuf members.
  29
  30 #include <ostream>
  31 #include <streambuf>
  32 #include <testsuite_hooks.h>
  33
  34 class Buf : public std::streambuf
  35 {
  36 protected:
  37   virtual int_type
  38   overflow(int_type = traits_type::eof())
  39   { throw 0; }
  40 };
  41
  42 void test01()
  43 {
  44   Buf buf;
  45   std::ostream os(&buf);
  46
  47   VERIFY( os.good() );
  48
  49   os.write("a", 1);
  50
  51   VERIFY( os.rdstate() == std::ios_base::badbit );
  52
  53   os.clear();
  54   os.exceptions(std::ios_base::badbit);
  55
  56   try
  57     {
  58       os.write("b", 1);
  59       VERIFY( false );
  60     }
  61   catch (int)
  62     {
  63       VERIFY( os.rdstate() == std::ios_base::badbit );
  64     }
  65 }
  66
  67 int main()
  68 {
  69   test01();
  70   return 0;
  71 }