From b3025b87d0d5a3d59e9a0b1770ffff6699ae04b7 Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Fri, 3 Jul 2020 21:04:08 +1000
Subject: [PATCH] Fix race on resize in terminal ui

---
 src/terminal_ui.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/terminal_ui.cc b/src/terminal_ui.cc
index a067809f..217f14ad 100644
--- a/src/terminal_ui.cc
+++ b/src/terminal_ui.cc
@@ -162,6 +162,9 @@ void TerminalUI::Window::draw(DisplayCoord pos,
                               ConstArrayView<DisplayAtom> atoms,
                              const Face& default_face)
 {
+    if (pos.line >= lines.size()) // We might receive an out of date draw command after a resize
+        return;
+
     lines[(size_t)pos.line].resize(pos.column);
     for (const DisplayAtom& atom : atoms)
     {