diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/spread-call-funcall.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/spread-call-funcall.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+load(libdir + "eqArrayHelper.js");
+
+function check(f) {
+  assertEqArray(f.call(...[null], 1, 2, 3), [1, 2, 3]);
+  assertEqArray(f.call(...[null], 1, ...[2, 3], 4, ...[5, 6]), [1, 2, 3, 4, 5, 6]);
+  assertEqArray(f.call(...[null, 1], ...[2, 3], 4, ...[5, 6]), [1, 2, 3, 4, 5, 6]);
+  assertEqArray(f.call(...[null, 1, ...[2, 3], 4, ...[5, 6]]), [1, 2, 3, 4, 5, 6]);
+}
+
+check(function(...x) x);
+check((...x) => x);