text: // Copyright 2019 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: --allow-natives-syntax
  
  var b = { x: 0, y: 0, 0: '' };
  var a = { x: 0, y: 100000000000, 0: '' };
  Object.seal(b);
  b.x = '';
  