Make sure the size arg of alloc will not overflow (#1618)

Also make sure the bytelength = arraylength << shift will not overflow

Fix issue #1616

JerryScript-DCO-1.0-Signed-off-by: Zidong Jiang zidong.jiang@intel.com

tests/jerry/es2015/regression-test-issue-1616.js

@@ -0,0 +1,27 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var name = "";
+
+try
+{
+  var a = new ArrayBuffer (0xfffffffe)
+}
+catch (e)
+{
+  name = e.name;
+}
+
+assert(name === "RangeError");
+