From a5019a3b957419ab924ef1a8090398fa0481b2de Mon Sep 17 00:00:00 2001
From: Patrick Kelsey <pkelsey@FreeBSD.org>
Date: Tue, 19 May 2015 02:24:55 +0000
Subject: [PATCH] Added description of POSIX-specified behavior when invoked on
 a key from within that key's destructor.

Reviewed by: jhb, -doc
Approved by: jmallett (mentor)
MFC after: 3 days
Sponsored by: Norse Corp, Inc.
---
 share/man/man3/pthread_getspecific.3 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/share/man/man3/pthread_getspecific.3 b/share/man/man3/pthread_getspecific.3
index d59003f4e281..3657e13515f4 100644
--- a/share/man/man3/pthread_getspecific.3
+++ b/share/man/man3/pthread_getspecific.3
@@ -64,6 +64,11 @@ is undefined.
 The
 .Fn pthread_getspecific
 function may be called from a thread-specific data destructor function.
+A call to
+.Fn pthread_getspecific
+for the thread-specific data key being destroyed returns the value NULL,
+unless the value is changed (after the destructor starts) by a call to
+.Fn pthread_setspecific .
 .Sh RETURN VALUES
 The
 .Fn pthread_getspecific