diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/spread-array-invalid-syntax.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/spread-array-invalid-syntax.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+load(libdir + "asserts.js");
+
+var offenders = [
+    "(1 ... n)",
+    "[1 ... n]",
+    "(...x)",
+    "[...x for (x of y)]",
+    "[...x, x for (x of y)]",
+    "[...]",
+    "(...)",
+    "[...,]",
+    "[... ...[]]",
+    "(... ...[])",
+    "[x, ...]",
+    "(x, ...)"
+];
+for (var sample of offenders) {
+    assertThrowsInstanceOf(function () { eval(sample); }, SyntaxError);
+}