src/v8/test/mjsunit/regress/regress-crbug-669451.js

// Copyright 2016 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

function foo() {
  var a = [,];
  a[0] = {}
  a[0].toString = FAIL;
}
try { foo(); } catch (e) {}
try { foo(); } catch (e) {}
%OptimizeFunctionOnNextCall(foo);
try { foo(); } catch (e) {}