From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Wed, 22 Oct 2008 06:14:15 +0000 (-0500)
Subject: ctime.3: ctime_r() and localtime_r() need not set 'timezone' and 'daylight'
X-Git-Tag: man-pages-3.12~80
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=546f67f3cd106cc5bb389fcf6ca00127edfb8dfd;p=thirdparty%2Fman-pages.git

ctime.3: ctime_r() and localtime_r() need not set 'timezone' and 'daylight'

The man page already noted that these functions need not set
'tzname', but things could be clearer: it tzset() is not called,
then the other two variables also are not set.

Also, clarify that ctime() does set 'timezone' and 'daylight'.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
---

diff --git a/man3/ctime.3 b/man3/ctime.3
index ddcc656f21..b30cd404e9 100644
--- a/man3/ctime.3
+++ b/man3/ctime.3
@@ -161,7 +161,8 @@ The abbreviations for the months are "Jan",
 The return value points to a statically allocated string which
 might be overwritten by subsequent calls to any of the date and time
 functions.
-The function also sets the external variable \fItzname\fP (see
+The function also sets the external
+variables \fItzname\fP, \fItimezone\fP, and \fIdaylight\fP (see
 .BR tzset (3))
 with information about the current timezone.
 The reentrant version
@@ -170,7 +171,7 @@ does the same, but stores the
 string in a user-supplied buffer
 which should have room for at least 26 bytes.
 It need not
-set \fItzname\fP.
+set \fItzname\fP, \fItimezone\fP, and \fIdaylight\fP.
 .PP
 The
 .BR gmtime ()
@@ -203,7 +204,7 @@ The
 .BR localtime_r ()
 function does the same, but stores the data in a
 user-supplied struct.
-It need not set \fItzname\fP.
+It need not set \fItzname\fP, \fItimezone\fP, and \fIdaylight\fP.
 .PP
 The
 .BR asctime ()