* This expression has an undefined variable which isn't detected, so

evaluation fails:

    error: impossible: undefined variable `gcc'

tests/lang/parse-fail-regression-20060610.nix

@@ -0,0 +1,11 @@
+let {
+  x =
+    {gcc}:
+    {
+      inherit gcc;
+    };
+
+  body = ({
+    inherit gcc;
+  }).gcc;
+}