regress-698790.js 566 Bytes
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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.

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// Flags: --allow-natives-syntax
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// Call RegExp constructor with a cons string.

var cons_string = %ConstructConsString("", "aaaaaaaaaaaaaa");
new RegExp(cons_string);

// Same thing but using TF lowering.

function make_cons_string(s) { return s + "aaaaaaaaaaaaaa"; }
make_cons_string("");
%OptimizeFunctionOnNextCall(make_cons_string);
var cons_str = make_cons_string("");
new RegExp(cons_str);