Follow jsc on not throwing when trying to add a property to a non-extensible object.

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 965 matching lines @@
   assertEquals(["c", "d", "a", "b"], strict("a", "b"));
   assertEquals(["c", "d", "c", "d"], nonstrict("a", "b"));
 })();
 
 
 function CheckPillDescriptor(func, name) {
 
   function CheckPill(pill) {
     assertEquals("function", typeof pill);
     assertInstanceof(pill, Function);
-    assertThrows(function() { pill.property = "value"; }, TypeError);
+    pill.property = "value";
+    assertEquals(pill.value, undefined);

[Martin Maly, 2011/03/21 20:38:35]

This is alright. We could also have:

assertThrows(function() { 'use strict'; pill.property = "value"; }, TypeError);

either instead or in addition to your check. I am fine with either option. The
paranoid me would go for both :)

     assertThrows(pill, TypeError);
     assertEquals(pill.prototype, (function(){}).prototype);
     var d = Object.getOwnPropertyDescriptor(pill, "prototype");
     assertFalse(d.writable);
     assertFalse(d.configurable);
     assertFalse(d.enumerable);
   }
 
   var descriptor = Object.getOwnPropertyDescriptor(func, name);
   CheckPill(descriptor.get)
@@ skipping 77 matching lines @@
   CheckPillDescriptor(args, "caller");
   CheckPillDescriptor(args, "callee");
 
   args = outer()(17, "value", strict);
   assertEquals(17, args[0])
   assertEquals("value", args[1])
   assertEquals(strict, args[2]);
   CheckPillDescriptor(args, "caller");
   CheckPillDescriptor(args, "callee");
 })();