libstdc++-v3/testsuite/27_io/basic_istream/readsome/char/8258.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999-2023 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 // 27.6.1.3 unformatted input functions
  21
  22 #include <istream>
  23 #include <streambuf>
  24 #include <testsuite_hooks.h>
  25
  26 // libstdc++/8258
  27 class mybuf : public std::basic_streambuf<char>
  28 { };
  29
  30 void test11()
  31 {
  32   using namespace std;
  33   char arr[10];
  34   mybuf sbuf;
  35   basic_istream<char, char_traits<char> > istr(&sbuf);
  36
  37   VERIFY(istr.rdstate() == ios_base::goodbit);
  38   VERIFY(istr.readsome(arr, 10) == 0);
  39   VERIFY(istr.rdstate() == ios_base::goodbit);
  40 }
  41
  42 int
  43 main()
  44 {
  45   test11();
  46   return 0;
  47 }