bug#24247: Heads up: gnutls 3.5.3 breaks lisp/net/tls.el

[Paul Eggert <eggert@cs.ucla.edu>]

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Thanks for the heads-up again. I installed the attached patch into emacs-25 and 
am closing Bug#24247.

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From 89eb09f6a1df176fbaa3cbb996f60948efc5f463 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Tue, 23 Aug 2016 12:27:54 -0700
Subject: [PATCH] * etc/PROBLEMS: Mention gnutls-cli 3.5.3 (Bug#24247).

---
 etc/PROBLEMS | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 496c7df..008f5a1 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -609,6 +609,14 @@ could run out of file descriptors.  You won't be able to open new files.
 
 auto-revert-use-notify is set to nil in global-auto-revert-mode, therefore.
 
+*** TLS problems, e.g., Gnus hangs when fetching via imaps
+http://debbugs.gnu.org/24247
+
+gnutls-cli 3.5.3 (2016-08-09) does not generate a "- Handshake was
+completed" message that tls.el relies upon, causing affected Emacs
+functions to hang.  To work around the problem, use older or newer
+versions of gnutls-cli, or use Emacs's built-in gnutls support.
+
 * Runtime problems related to font handling
 
 ** Characters are displayed as empty boxes or with wrong font under X.
-- 
2.5.5