[src/trunk]: src add a quick note about gcc 7 likely causing update build fai...

[mrg <mrg%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8dbaedf9c0bb
branches:  trunk
changeset: 448755:8dbaedf9c0bb
user:      mrg <mrg%NetBSD.org@localhost>
date:      Fri Feb 08 09:57:01 2019 +0000

description:
add a quick note about gcc 7 likely causing update build failures.

diffstat:

 UPDATING |  5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diffs (19 lines):

diff -r 66b3ef9dd7d2 -r 8dbaedf9c0bb UPDATING
--- a/UPDATING  Fri Feb 08 09:42:13 2019 +0000
+++ b/UPDATING  Fri Feb 08 09:57:01 2019 +0000
@@ -1,4 +1,4 @@
-$NetBSD: UPDATING,v 1.298 2018/09/24 13:18:35 martin Exp $
+$NetBSD: UPDATING,v 1.299 2019/02/08 09:57:01 mrg Exp $
 
 This file (UPDATING) is intended to be a brief reference to recent
 changes that might cause problems in the build process, and a guide for
@@ -19,6 +19,9 @@
 Recent changes:
 ^^^^^^^^^^^^^^^
 
+20190207:
+       GCC 7 switched for many ports.  Update builds are likely to fail.
+
 20180924:
        A newer OpenSSL version has been imported. If you are doing
        update builds, make sure to remove all old obj dirs, like: