1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001-2015 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// 27.8.1.4 Overridden virtual functions
21
22// { dg-require-fileio "" }
23
24#include <fstream>
25#include <testsuite_hooks.h>
26#include <testsuite_io.h>
27
28// @require@ %-*.tst %-*.txt
29// @diff@ %-*.tst %*.txt
30
31const char name_01[] = "filebuf_virtuals-1.txt"; // file with data in it
32const char name_03[] = "tmp_sputn_1io.tst"; // empty file, need to create
33
34void test05()
35{
36  using namespace std;
37  using namespace __gnu_test;
38
39  typedef filebuf::int_type 	int_type;
40  typedef filebuf::traits_type 	traits_type;
41  typedef size_t 			size_type;
42
43  bool test __attribute__((unused)) = true;
44  streamsize 			strmsz_1, strmsz_2;
45
46  // streamsize sputn(const char_typs* s, streamsize n)
47  // write up to n chars to out_cur from s, returning number assigned
48  // NB *sputn will happily put '\0' into your stream if you give it a chance*
49
50  // in | out
51  {
52    constraint_filebuf fb_03;
53    fb_03.open(name_03, ios_base::out | ios_base::in | ios_base::trunc);
54    VERIFY( !fb_03.write_position() );
55    VERIFY( !fb_03.read_position() );
56    strmsz_1 = fb_03.sputn("racadabras", 10);//"abracadabras or what?"
57    VERIFY( strmsz_1 == 10 );
58    strmsz_2 = fb_03.sputn(", i wanna reach out and", 10);
59    VERIFY( strmsz_2 == 10 );
60    VERIFY( strmsz_1 == strmsz_2 );
61    VERIFY( fb_03.write_position() );
62    VERIFY( !fb_03.read_position() );
63  }
64}
65
66int main()
67{
68  test05();
69  return 0;
70}
71