diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/spread-array-evaluation-order.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/spread-array-evaluation-order.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+load(libdir + "eqArrayHelper.js");
+
+var check = [];
+function t(token) {
+    check.push(token);
+    return token;
+}
+[3, ...[t(1)],, ...[t(2), t(3)], 34, 42, ...[t(4)]];
+assertEqArray(check, [1, 2, 3, 4]);
+
+var arr = [1, 2, 3];
+assertEqArray([...arr, arr.pop()], [1, 2, 3, 3]);