src/v8/test/intl/utils.js

// Copyright 2013 the V8 project authors. All rights reserved.
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/**
 * Taints properties on Object.prototype so we can find security issues.
 */
function taintProperties(properties) {
  properties.forEach(function(property) {
    Object.defineProperty(Object.prototype, property, {
      set: function(value) {
        throw new Error('Property ' + property + ' is compromised. ' +
                        'Setting value: ' + value);
      }
    });
  });
}