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-rw-r--r--src/nvim/testdir/test_arglist.vim7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_arglist.vim b/src/nvim/testdir/test_arglist.vim
index 3efef60f8e..7d5511f587 100644
--- a/src/nvim/testdir/test_arglist.vim
+++ b/src/nvim/testdir/test_arglist.vim
@@ -452,3 +452,10 @@ func Test_arg_all_expand()
call assert_equal('notexist Xx\ x runtest.vim', expand('##'))
call delete('Xx x')
endfunc
+
+func Test_large_arg()
+ " Argument longer or equal to the number of columns used to cause
+ " access to invalid memory.
+ exe 'argadd ' .repeat('x', &columns)
+ args
+endfunc