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Edit File: regress-176.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // See http://code.google.com/p/v8/issues/detail?id=176 assertArrayEquals(["f", undefined], "foo".match(/(?:(?=(f)o))?f/), "zero length match in (?:) with capture in lookahead"); assertArrayEquals(["f", undefined], "foo".match(/(?=(f)o)?f/), "zero length match in (?=) with capture in lookahead"); assertArrayEquals(["fo", "f"], "foo".match(/(?:(?=(f)o)f)?o/), "non-zero length match with capture in lookahead"); assertArrayEquals(["fo", "f"], "foo".match(/(?:(?=(f)o)f?)?o/), "non-zero length match with greedy ? in (?:)"); assertArrayEquals(["fo", "f"], "foo".match(/(?:(?=(f)o)f??)?o/), "non-zero length match with non-greedy ? in (?:), o forces backtrack"); assertArrayEquals(["fo", "f"], "foo".match(/(?:(?=(f)o)f??)?./), "non-zero length match with non-greedy ? in (?:), zero length match causes backtrack"); assertArrayEquals(["f", undefined], "foo".match(/(?:(?=(f)o)fx)?./), "x causes backtrack inside (?:)");