Strict mode object literal validation

test/mjsunit/strict-mode.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 97 matching lines @@
 //  "use strict";\
 //}', SyntaxError);
 
 // Strict mode doesn't affect the outer stop of strict code.
 function NotStrict(eval) {
   function Strict() {
     "use strict";
   }
   with ({}) {};
 }
+
+// Duplicate data properties.
+CheckStrictMode("var x = { dupe : 1, nondupe: 3, dupe : 2 };", SyntaxError)
+CheckStrictMode("var x = { '1234' : 1, '2345' : 2, '1234' : 3 };", SyntaxError)
+CheckStrictMode("var x = { '1234' : 1, '2345' : 2, 1234 : 3 };", SyntaxError)
+CheckStrictMode("var x = { 3.14 : 1, 2.71 : 2, 3.14 : 3 };", SyntaxError)
+CheckStrictMode("var x = { 3.14 : 1, '3.14' : 2};", SyntaxError)
+

[Lasse Reichstein, 2011/01/25 11:19:03]

For good measure, try with
 var x = {123: 1, "0123": 2};

 var x = {123: 1,
123.00000000000000000000000000000000000000000000000000000000000000000001 : 2}

and 

 var x = {123: 1,
"123.00000000000000000000000000000000000000000000000000000000000000000001" : 2}

The first shouldn't throw, the second should (it's the same number), and the
third shouldn't.

[Lasse Reichstein, 2011/01/25 11:19:03]

Also try get/set properties using strings and numbers, e.g.:

 var x = {get 12(){}, get "12"(){}};
 var x = {get foo(){}, get "foo"(){}};

[Martin Maly, 2011/01/25 18:29:23]

Done.

[Martin Maly, 2011/01/25 18:29:23]

Done.

+// Two getters (non-strict)
+assertThrows("var x = { get foo() { }, get foo() { } };", SyntaxError)
+
+// Two setters (non-strict)
+assertThrows("var x = { set foo(v) { }, set foo(v) { } };", SyntaxError)
+
+// Setter and data (non-strict)
+assertThrows("var x = { foo: 'data', set foo(v) { } };", SyntaxError)
+assertThrows("var x = { set foo(v) { }, foo: 'data' };", SyntaxError)
+
+// Getter and data (non-strict)
+assertThrows("var x = { foo: 'data', get foo() { } };", SyntaxError)
+assertThrows("var x = { get foo() { }, foo: 'data' };", SyntaxError)