This file is indexed.

/usr/lib/gcc/x86_64-linux-gnu/6/include/d/std/c/linux/pthread.d is in libgphobos-6-dev 6.4.0-17ubuntu1.

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
/* Written by Walter Bright, Christopher E. Miller, and many others.
 * www.digitalmars.com
 * Placed into public domain.
 */

/// Please import core.sys.posix.pthread or the other core.sys.posix.* modules you need instead. This module will be deprecated in DMD 2.068.
module std.c.linux.pthread;

version (linux):
import std.c.linux.linux;

public import core.sys.posix.pthread;