diff --git a/testdata/parser/negative/30.pdl b/testdata/parser/negative/30.pdl
new file mode 100644
index 0000000000000000000000000000000000000000..a10bd74e391efaacb23153c4083b9a84144dc3fc
--- /dev/null
+++ b/testdata/parser/negative/30.pdl
@@ -0,0 +1,7 @@
+#version 100
+
+int main(int a) {
+    int x = 5;
+    int y = x + 5;
+    int z = z; // now allowed
+}
\ No newline at end of file