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-rw-r--r--src/nvim/testdir/test_functions.vim2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/nvim/testdir/test_functions.vim b/src/nvim/testdir/test_functions.vim
index e0e0c1ca38..44b6f0373e 100644
--- a/src/nvim/testdir/test_functions.vim
+++ b/src/nvim/testdir/test_functions.vim
@@ -1774,6 +1774,8 @@ func Test_charclass()
call assert_equal(1, charclass('.'))
call assert_equal(2, charclass('x'))
call assert_equal(3, charclass("\u203c"))
+ " this used to crash vim
+ call assert_equal(0, "xxx"[-1]->charclass())
endfunc
func Test_eventhandler()