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

   1 // Copyright (C) 2005-2023 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 // 27.6.2.6 Unformatted output functions
  19 //
  20 // _GLIBCXX_RESOLVE_LIB_DEFECTS
  21 // DR 60. What is a formatted input function?
  22 // basic_ostream::put(char_type) is an unformatted output function.
  23 // DR 63. Exception-handling policy for unformatted output.
  24 // Unformatted output functions should catch exceptions thrown
  25 // from streambuf members.
  26
  27 #include <ostream>
  28 #include <streambuf>
  29 #include <testsuite_hooks.h>
  30
  31 class Buf : public std::wstreambuf
  32 {
  33 protected:
  34   virtual int_type
  35   overflow(int_type = traits_type::eof())
  36   { throw 0; }
  37 };
  38
  39 void test01()
  40 {
  41   Buf buf;
  42   std::wostream os(&buf);
  43
  44   VERIFY( os.good() );
  45
  46   os.put(L'a');
  47
  48   VERIFY( os.rdstate() == std::ios_base::badbit );
  49
  50   os.clear();
  51   os.exceptions(std::ios_base::badbit);
  52
  53   try
  54     {
  55       os.put(L'b');
  56       VERIFY( false );
  57     }
  58   catch (int)
  59     {
  60       VERIFY( os.rdstate() == std::ios_base::badbit );
  61     }
  62 }
  63
  64 int main()
  65 {
  66   test01();
  67   return 0;
  68 }