Strict mode object literal validation

src/messages.js

 // Copyright 2006-2008 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 191 matching lines @@
       array_indexof_not_defined:    "Array.getIndexOf: Argument undefined",
       object_not_extensible:        "Can't add property %0, object is not extensible",
       illegal_access:               "Illegal access",
       invalid_preparser_data:       "Invalid preparser data for function %0",
       strict_mode_with:             "Strict mode code may not include a with statement",
       strict_catch_variable:        "Catch variable may not be eval or arguments in strict mode",
       strict_param_name:            "Parameter name eval or arguments is not allowed in strict mode",
       strict_param_dupe:            "Strict mode function may not have duplicate parameter names",
       strict_var_name:              "Variable name may not be eval or arguments in strict mode",
       strict_function_name:         "Function name may not be eval or arguments in strict mode",
+      strict_duplicate_property:    "Duplicate data property in object literal not allowed in strict mode",
+      accessor_data_property:       "Object literal may not have data and accessor property with the same name",
+      accessor_get_set:             "Object literal may not have multiple get/set accessors with the same name",
     };
   }
   var format = kMessages[message.type];
   if (!format) return "<unknown message " + message.type + ">";
   return FormatString(format, message.args);
 }
 
 
 function GetLineNumber(message) {
   if (message.startPos == -1) return kNoLineNumberInfo;
@@ skipping 799 matching lines @@
   return this.name + message;
 }
 
 %FunctionSetName(errorToString, 'toString');
 %SetProperty($Error.prototype, 'toString', errorToString, DONT_ENUM);
 
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Top::StackOverflow().
 const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);