From b40ec4cbf85bebdd768fce6f624d30247c5531d3 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Tue, 9 Feb 2016 12:18:31 +0100
Subject: [PATCH] ttyslot.3: Update FTM requirements (_DEFAULT_SOURCE)

And remove mention of obsolete _XOPEN_SOURCE_EXTENDED

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---
 man3/ttyslot.3 | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/man3/ttyslot.3 b/man3/ttyslot.3
index 63388baff..71143b58c 100644
--- a/man3/ttyslot.3
+++ b/man3/ttyslot.3
@@ -43,9 +43,13 @@ Feature Test Macro Requirements for glibc (see
 .ad l
 .BR ttyslot ():
 .RS 4
-_BSD_SOURCE ||
+Since glibc 2.20:
+    _BSD_SOURCE ||
+    _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_\ <\ 500
 .br
-_XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_\ <\ 500\ &&\ _XOPEN_SOURCE_EXTENDED
+Glibc 2.19 and earlier:
+    _DEFAULT_SOURCE ||
+    _XOPEN_SOURCE\ &&\ _XOPEN_SOURCE_\ <\ 500
 .RE
 .ad b
 .SH DESCRIPTION