diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arguments/rest-alias-function.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arguments/rest-alias-function.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+function no_defaults(a, ...rest) {
+    return rest;
+    function rest() { return a; }
+}
+assertEq(typeof no_defaults(), "function");
+function with_defaults(a=42, ...rest) {
+    return rest;
+    function rest() { return a; }
+}
+assertEq(typeof with_defaults(), "function");