Improving error messages when adding properties to non JSObject receiver in

test/mjsunit/messages.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.
 
 // Flags: --stack-size=100 --harmony --harmony-reflect --harmony-regexps
 // Flags: --harmony-simd --strong-mode
 
 function test(f, expected, type) {
   try {
     f();
@@ skipping 283 matching lines @@
   "use strict";
   arguments.callee;
 }, "'caller', 'callee', and 'arguments' properties may not be accessed on " +
    "strict mode functions or the arguments objects for calls to them",
    TypeError);
 
 // kStrictReadOnlyProperty
 test(function() {
   "use strict";
   (1).a = 1;
-}, "Cannot assign to read only property 'a' of 1", TypeError);
+}, "Cannot create property 'a' on number '1'", TypeError);
 
 // kStrongImplicitCast
 test(function() {
   "use strong";
   "a" + 1;
 }, "In strong mode, implicit conversions are deprecated", TypeError);
 
 // kSymbolToString
 test(function() {
   "" + Symbol();
@@ skipping 148 matching lines @@
   Number(1).toString(100);
 }, "toString() radix argument must be between 2 and 36", RangeError);
 
 
 // === URIError ===
 
 // kURIMalformed
 test(function() {
   decodeURI("%%");
 }, "URI malformed", URIError);