Author: oshogbo
Date: Wed Jun  1 19:49:38 2016
New Revision: 301159
URL: https://svnweb.freebsd.org/changeset/base/301159

Log:
  Document behavior of wait introduced in the r286698.
  
  Suggested by:         glebius
  Reviewed by:          wblock, bjk
  Differential Revision:        https://reviews.freebsd.org/D6080

Modified:
  head/lib/libc/sys/wait.2

Modified: head/lib/libc/sys/wait.2
==============================================================================
--- head/lib/libc/sys/wait.2    Wed Jun  1 18:46:54 2016        (r301158)
+++ head/lib/libc/sys/wait.2    Wed Jun  1 19:49:38 2016        (r301159)
@@ -28,7 +28,7 @@
 .\"     @(#)wait.2     8.2 (Berkeley) 4/19/94
 .\" $FreeBSD$
 .\"
-.Dd December 3, 2013
+.Dd June 1, 2016
 .Dt WAIT 2
 .Os
 .Sh NAME
@@ -596,6 +596,14 @@ and
 fields of
 .Fa infop
 must be checked against zero to determine if a process reported status.
+.Pp
+.Fn wait
+called with -1 to wait for any child process will ignore a child that is
+referenced by a process descriptor (see
+.Xr pdfork 2 ) .
+Specific processes can still be waited on by specifying the process ID
+or descriptor (see
+.Xr pdwait 4 ) .
 .Sh ERRORS
 The
 .Fn wait
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