From 6853690c78c8fcbe0d5d3265cf9badaa7307c7cf Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <janedmundlazo@hotmail.com>
Date: Thu, 9 Aug 2018 15:14:09 -0400
Subject: vim-patch:8.0.1433: illegal memory access after undo

Problem:    Illegal memory access after undo. (Dominique Pelle)
Solution:   Avoid the column becomes negative. (Christian Brabandt,
            closes vim/vim#2533)
https://github.com/vim/vim/commit/95dbcbea6d85a5b79d9617ab3863458fdf0217a0
---
 src/nvim/testdir/test_undo.vim | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'src/nvim/testdir')

diff --git a/src/nvim/testdir/test_undo.vim b/src/nvim/testdir/test_undo.vim
index 38610f8002..3e6e276751 100644
--- a/src/nvim/testdir/test_undo.vim
+++ b/src/nvim/testdir/test_undo.vim
@@ -348,3 +348,12 @@ func Test_redo_empty_line()
   exe "norm."
   bwipe!
 endfunc
+
+" This used to cause an illegal memory access
+func Test_undo_append()
+  new
+  call feedkeys("axx\<Esc>v", 'xt')
+  undo
+  norm o
+  quit
+endfunc
-- 
cgit