libstdc++-v3/testsuite/27_io/basic_filebuf/overflow/char/9169.cc

   1 // 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   2
   3 // Copyright (C) 2001, 2002, 2003 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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 27.8.1.4 Overridden virtual functions
  22
  23 // { dg-require-fileio "" }
  24
  25 #include <fstream>
  26 #include <locale>
  27 #include <testsuite_hooks.h>
  28
  29 const char name_04[] = "filebuf_virtuals-4.txt"; // empty file, need to create
  30
  31 class Cvt_to_upper : public std::codecvt<char, char, mbstate_t>
  32 {
  33   bool do_always_noconv() const throw()
  34   {
  35     return false;
  36   }
  37 };
  38
  39 // libstdc++/9169
  40 // filebuf output fails if codecvt<>::out returns noconv
  41 void test10()
  42 {
  43   using namespace std;
  44   bool test __attribute__((unused)) = true;
  45
  46   locale c_loc = locale::classic();
  47   locale loc(c_loc, new Cvt_to_upper);
  48
  49   string str("abcdefghijklmnopqrstuvwxyz");
  50   string tmp;
  51
  52   {
  53     ofstream out;
  54     out.imbue(loc);
  55     out.open(name_04);
  56     copy(str.begin(), str.end(), ostreambuf_iterator<char>(out));
  57   }
  58
  59   {
  60     ifstream in;
  61     in.open(name_04);
  62     copy(istreambuf_iterator<char>(in), istreambuf_iterator<char>(),
  63          back_inserter(tmp));
  64   }
  65
  66   VERIFY( tmp.size() == str.size() );
  67   VERIFY( tmp == str );
  68 }
  69
  70 int main()
  71 {
  72   test10();
  73   return 0;
  74 }