>From 356f20b5d8b5809100102797c51f1b54cc8a908e Mon Sep 17 00:00:00 2001
From: Alan Third <alan@idiocy.org>
Date: Mon, 24 Sep 2018 14:04:54 +0100
Subject: [PATCH] Fix crash on flush to display (bug#32812)

* src/nsterm.m (ns_flush_display): Block input to prevent Emacs IO
processing inside AppKit code.
---
 src/nsterm.m | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/nsterm.m b/src/nsterm.m
index b36d847eb3..4c03d35c69 100644
--- a/src/nsterm.m
+++ b/src/nsterm.m
@@ -1252,7 +1252,9 @@ static NSRect constrain_frame_rect(NSRect frameRect, bool isFullscreen)
    dirty by setNeedsDisplayInRect (in ns_focus), then this will call
    draw_rect: which will "expose" those areas.  */
 {
+  block_input ();
   [FRAME_NS_VIEW (f) displayIfNeeded];
+  unblock_input ();
 }
 
 
-- 
2.18.0