Add a fuzzing input

Signed-off-by: Gavin Howard <gavin@yzena.com>
diff --git a/tests/fuzzing/dc_inputs/stack_len.txt b/tests/fuzzing/dc_inputs/stack_len.txt
new file mode 100644
index 0000000..1b367f3
--- /dev/null
+++ b/tests/fuzzing/dc_inputs/stack_len.txt
@@ -0,0 +1,15 @@
+zp
+zp
+zp
+zp
+sa
+yap
+Sa
+yap
+Sa
+yapR
+La
+yapR
+La
+yap
+zp