23 lines
641 B
JavaScript
23 lines
641 B
JavaScript
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// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Should not time out. Running time 0.5s vs. 120s before the change.
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function collapse() {
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var src = "(?:";
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for (var i = 128; i < 0x1000; i++) {
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src += "a" + String.fromCharCode(i) + "|";
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}
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src += "aa)";
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var collapsible = new RegExp(src);
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var subject = "zzzzzzz" + String.fromCharCode(3000);
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for (var i = 0; i < 1000; i++) {
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subject += "xxxxxxx";
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}
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for (var i = 0; i < 2000; i++) {
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assertFalse(collapsible.test(subject));
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}
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}
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collapse();
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