1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/tests/js1_8_1/regress/regress-509354.js b/js/src/tests/js1_8_1/regress/regress-509354.js
new file mode 100644
index 000000000..cbf4cfc59
--- /dev/null
+++ b/js/src/tests/js1_8_1/regress/regress-509354.js
@@ -0,0 +1,41 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor: Jason Orendorff <jorendorff@mozilla.com>
+ */
+
+// Decompile destructuring argument named `arguments` correctly.
+var actual = "" + function ([arguments]) {return arguments;};
+compareSource('function ([arguments]) {return arguments;}', actual, "part 1");
+
+// Make sure the 'arguments' argument actually works.
+var f = function ([arguments]) {return arguments + 1;};
+reportCompare(3.25, f([2.25]), "part 2");
+
+// Throw SyntaxError when `arguments` appears twice in a destructuring parameter.
+actual = "no exception";
+try {
+    eval('(function ([arguments, arguments]) {return arguments();})');
+} catch (exc) {
+    actual = exc.name;
+}
+reportCompare("SyntaxError", actual, "part 3");
+
+// And again...
+actual = "no exception";
+try {
+    eval('(function ([a, b, arguments, d], [e, f, arguments]) {return arguments();})');
+} catch (exc) {
+    actual = exc.name;
+}
+reportCompare("SyntaxError", actual, "part 4");
+
+// The original test case from bug 509354. Don't crash.
+try {
+    eval('print(function([arguments,arguments,arguments,arguments,arguments,' +
+         'arguments,arguments,arguments,arguments,arguments,arguments,' +
+         'arguments,arguments,arguments,arguments,arguments]){})');
+} catch (exc) {
+}
+reportCompare("no crash", "no crash", "part 5");
+