libstdc++-v3/testsuite/27_io/basic_istream/getline/char/3.cc

   1 // 1999-08-11 bkoz
   2
   3 // Copyright (C) 1999-2020 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 <cstring> // for strlen
  23 #include <istream>
  24 #include <sstream>
  25 #include <testsuite_hooks.h>
  26
  27 // [bug] istream::getline(char*,streamsize) still broken
  28 // http://gcc.gnu.org/ml/libstdc++/2000-07/msg00126.html
  29 // brent verner <brent at rcfile dot org
  30 void
  31 test06()
  32 {
  33   using namespace std;
  34
  35   const streamsize it = 5;
  36   char tmp[it];
  37   const char* str_lit = "abcd\n";
  38
  39   stringbuf strbuf(str_lit, std::ios_base::in);
  40   istream istr(&strbuf);
  41
  42   istr.getline(tmp,it);
  43   VERIFY( istr.gcount() == it );  // extracted whole string
  44   VERIFY( strlen(tmp) == 4 );     // stored all but '\n'
  45   VERIFY( !istr.eof() );          // extracted up to but not eof
  46   VERIFY( !istr.fail() );         // failbit not set
  47
  48   char c = 'z';
  49   istr.get(c);
  50   VERIFY( c == 'z' );
  51   VERIFY( istr.eof() );
  52 }
  53
  54 int
  55 main()
  56 {
  57   test06();
  58   return 0;
  59 }