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Kmake/deps/v8/test/mjsunit/string-constructor-inlining-lazy-deopt.js
2026-05-26 23:36:42 -07:00

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JavaScript

// Copyright 2024 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(a) {
return new String(a);
}
const obj = {
[Symbol.toPrimitive]() {
%DeoptimizeFunction(foo);
return "I'm a very special object";
},
};
%PrepareFunctionForOptimization(foo);
assertEquals(new String("I'm a very special object"), foo(obj));
%OptimizeFunctionOnNextCall(foo);
assertEquals(new String("I'm a very special object"), foo(obj));