1// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>
2
3// Copyright (C) 2001, 2002, 2003, 2009 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[] = "sgetc.txt"; // file with data in it
32const char name_03[] = "tmp_sgetc_2io.tst"; // empty file, need to create
33
34// Test overloaded virtual functions.
35void test05()
36{
37  using namespace std;
38  using namespace __gnu_test;
39  typedef std::filebuf::int_type 	int_type;
40  typedef filebuf::traits_type 		traits_type;
41
42  bool test __attribute__((unused)) = true;
43  int_type 			c1, c2, c3;
44
45  // int_type sgetc()
46  // if read_cur not avail, return uflow(), else return *read_cur
47
48  // in | out 1
49  {
50    constraint_filebuf fb_03; // in | out
51    fb_03.pubsetbuf(0, 0);
52    fb_03.open(name_03, ios::out | ios::in | ios::trunc);
53    VERIFY( fb_03.unbuffered() );
54    c1 = fb_03.sgetc();
55    c2 = fb_03.sbumpc();
56    VERIFY( c1 == traits_type::eof() );
57    VERIFY( c1 == c2 );
58    VERIFY( fb_03.unbuffered() );
59  }
60
61  // in | out 2
62  {
63    constraint_filebuf fb_01; // in
64    fb_01.pubsetbuf(0, 0);
65    fb_01.open(name_01, ios::in | ios::out);
66    VERIFY( fb_01.unbuffered() );
67    c1 = fb_01.sgetc();
68    VERIFY( c1 == '/' );
69    c2 = fb_01.sgetc();
70    VERIFY( c1 == c2 );
71    fb_01.sbumpc();
72    c1 = fb_01.sbumpc();
73    c2 = fb_01.sgetc();
74    c3 = fb_01.sgetc();
75    VERIFY( c1 == '/' );
76    VERIFY( c2 == ' ' );
77    VERIFY( c3 == ' ' );
78    VERIFY( fb_01.unbuffered() );
79  }
80}
81
82int main()
83{
84  test05();
85  return 0;
86}
87