This file is indexed.

/usr/include/asio/is_write_buffered.hpp is in libasio-dev 1:1.10.2-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
//
// is_write_buffered.hpp
// ~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//

#ifndef ASIO_IS_WRITE_BUFFERED_HPP
#define ASIO_IS_WRITE_BUFFERED_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"
#include "asio/buffered_stream_fwd.hpp"
#include "asio/buffered_write_stream_fwd.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {

namespace detail {

template <typename Stream>
char is_write_buffered_helper(buffered_stream<Stream>* s);

template <typename Stream>
char is_write_buffered_helper(buffered_write_stream<Stream>* s);

struct is_write_buffered_big_type { char data[10]; };
is_write_buffered_big_type is_write_buffered_helper(...);

} // namespace detail

/// The is_write_buffered class is a traits class that may be used to determine
/// whether a stream type supports buffering of written data.
template <typename Stream>
class is_write_buffered
{
public:
#if defined(GENERATING_DOCUMENTATION)
  /// The value member is true only if the Stream type supports buffering of
  /// written data.
  static const bool value;
#else
  ASIO_STATIC_CONSTANT(bool,
      value = sizeof(detail::is_write_buffered_helper((Stream*)0)) == 1);
#endif
};

} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // ASIO_IS_WRITE_BUFFERED_HPP