text: // Copyright 2017 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 v = {}
  
  function foo() {
    v[0] = 5;
    v[-0] = 27;
    return v[0];
  }
  
  assertEquals(27, foo());
  %OptimizeFunctionOnNextCall(foo);
  assertEquals(27, foo());
  