Check for null and undefined when getting type name for stack trace.

R=svenpanne@chromium.org
BUG=v8:3718
LOG=N

Review URL: https://codereview.chromium.org/1164933005

Cr-Commit-Position: refs/heads/master@{#28840}

src/messages.js

@@ -908,6 +908,7 @@ function FormatStackTrace(obj, raw_stack) {
 
 
 function GetTypeName(receiver, requireConstructor) {
+  if (IS_NULL_OR_UNDEFINED(receiver)) return null;
   var constructor = receiver.constructor;
   if (!constructor) {
     return requireConstructor ? null :

test/mjsunit/regress/regress-3718.js

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+"use strict";
+
+function getTypeName(receiver) {
+  Error.prepareStackTrace = function(e, stack) { return stack; }
+  var stack = (function() { return new Error().stack; }).call(receiver);
+  Error.prepareStackTrace = undefined;
+  return stack[0].getTypeName();
+}
+
+assertNull(getTypeName(undefined));
+assertNull(getTypeName(null));
+assertEquals("Number", getTypeName(1));
+assertEquals("String", getTypeName(""));
+assertEquals("Boolean", getTypeName(false));
+assertEquals("Object", getTypeName({}));
+assertEquals("Array", getTypeName([]));
+assertEquals("Custom", getTypeName(new (function Custom(){})()));