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// Copyright 2018 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 --opt
/* Test deopt behaviors when the prototype has elements */
// findIndex
(function () {
var array = [,];
function findIndex() {
return array.findIndex(v => v > 0);
}
findIndex(); findIndex();
%OptimizeFunctionOnNextCall(findIndex);
assertEquals(findIndex(), -1);
array.__proto__.push(6);
// deopt
assertEquals(findIndex(), 0);
})();
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