svn commit: r333248 - head

[Philip Paeps]

Author: philip
Date: Fri May  4 10:52:17 2018
New Revision: 333248
URL: https://svnweb.freebsd.org/changeset/base/333248

Log:
  Point out that the tzdata 2018e update brings in negative DST for certain time
  zones.  This does not affect the vast majority of users who do not care about
  (or even know about) the tm_isdst flag but may be slightly surprising to those
  with a more specialised interest in time zone arcana.
  
  MFC after:	3 days

Modified:
  head/UPDATING

Modified: head/UPDATING
==============================================================================
--- head/UPDATING	Fri May  4 10:17:27 2018	(r333247)
+++ head/UPDATING	Fri May  4 10:52:17 2018	(r333248)
@@ -51,6 +51,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 12.x IS SLOW:
 
 ****************************** SPECIAL WARNING: ******************************
 
+20180504:
+	The tz database (tzdb) has been updated to 2018e.  This version more
+	correctly models time stamps in time zones with negative DST such as
+	Europe/Dublin (from 1971 on), Europe/Prague (1946/7), and
+	Africa/Windhoek (1994/2017).  This does not affect the UT offsets, only
+	time zone abbreviations and the tm_isdst flag.
+
 20180502:
 	The ixgb(4) driver has been removed.  This driver was for an early and
 	uncommon legacy PCI 10GbE for a single ASIC, Intel 82597EX. Intel