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-rw-r--r--src/nvim/testdir/test_undo.vim9
1 files changed, 9 insertions, 0 deletions
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