diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arguments/rest-underflow.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arguments/rest-underflow.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,9 @@
+function f(a, b, c, ...rest) {
+    assertEq(a, 1);
+    assertEq(b, undefined);
+    assertEq(c, undefined);
+    assertEq(Array.isArray(rest), true);
+    assertEq(rest.length, 0);
+    assertEq(Object.getPrototypeOf(rest), Array.prototype);
+}
+f(1);