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_02[] = "tmp_sgetc_1out.tst"; // empty file, need to create
32
33// Test overloaded virtual functions.
34void test05()
35{
36  using namespace std;
37  using namespace __gnu_test;
38  typedef std::filebuf::int_type 	int_type;
39  typedef filebuf::traits_type 		traits_type;
40
41  bool test __attribute__((unused)) = true;
42  int_type 			c1, c2;
43
44  // int_type sgetc()
45  // if read_cur not avail, return uflow(), else return *read_cur
46
47  // out
48  {
49    constraint_filebuf fb_02; // out
50    fb_02.open(name_02, ios::out | ios::trunc);
51    VERIFY( !fb_02.write_position() );
52    VERIFY( !fb_02.read_position() );
53    c1 = fb_02.sgetc();
54    VERIFY( c1 == traits_type::eof() );
55    c2 = fb_02.sgetc();
56    VERIFY( c2 == traits_type::eof() );
57    fb_02.sbumpc();
58    c1 = fb_02.sbumpc();
59    c2 = fb_02.sgetc();
60    VERIFY( c1 == c2 );
61    VERIFY( !fb_02.write_position() );
62    VERIFY( !fb_02.read_position() );
63  }
64}
65
66int main()
67{
68  test05();
69  return 0;
70}
71