v8/test/mjsunit/compiler/deopt-string-outofbounds.js

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// 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
var s = "12345";
(function() {
function foo() { return s[5]; }
foo();
foo();
%OptimizeFunctionOnNextCall(foo);
foo();
%OptimizeFunctionOnNextCall(foo);
foo();
assertOptimized(foo);
})();
(function() {
function foo(i) { return s[i]; }
foo(0);
foo(1);
%OptimizeFunctionOnNextCall(foo);
foo(5);
%OptimizeFunctionOnNextCall(foo);
foo(5);
assertOptimized(foo);
})();