v8/test/mjsunit/regress/regress-crbug-719479.js

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// 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
function baz(a, b) {
for (var i = 0; i < a.length; i++) {
if (a[i], b[i]) return false;
}
}
function bar(expected, found) {
if (!baz(found, expected)) {
}
};
bar([{}, 6, NaN], [1.8, , NaN]);
function foo() {
var a = [1,2,3,4];
bar(a.length, a.length);
}
foo();
foo();
%OptimizeFunctionOnNextCall(foo);
foo();