diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-619003-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-619003-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+var expect = 'SyntaxError: duplicate argument names not allowed in this context';
+var actual = 'No error';
+
+var a = [];
+
+// Test up to 200 to cover tunables such as js::PropertyTree::MAX_HEIGHT.
+for (var i = 0; i < 200; i++) {
+    a.push("b" + i);
+    try {
+        eval("(function ([" + a.join("],[") + "],a,a){})");
+    } catch (e) {
+        actual = '' + e;
+    }
+    assertEq(actual, expect);
+}
+reportCompare(0, 0, "ok");