diff --git a/testdata/parser/negative/30.txt b/testdata/parser/negative/30.txt
new file mode 100644
index 0000000000000000000000000000000000000000..171946064e34d086b770e427e4826d84174f424f
--- /dev/null
+++ b/testdata/parser/negative/30.txt
@@ -0,0 +1,3 @@
+Parse error at 30.pdl:6:13: Unresolved variable
+    int z = z; // now allowed
+            ^