diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/spread-call-invalid-syntax.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/spread-call-invalid-syntax.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+load(libdir + "asserts.js");
+
+var offenders = [
+    "f(1 ... n)",
+    "f(...x for (x in y))",
+    "f(...)",
+    "f(...,)",
+    "f(... ...[])",
+    "f(...x,)",
+    "f(x, ...)",
+    "f(...x, x for (x in y))",
+    "f(x for (x in y), ...x)"
+];
+for (var sample of offenders) {
+    assertThrowsInstanceOf(function() { eval(sample); }, SyntaxError);
+}