[Webkit-unassigned] [Bug 46893] New: The parenthetical assertion checking isn't working in some cases with YARR Interpreter

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46893

           Summary: The parenthetical assertion checking isn't working in
                    some cases with YARR Interpreter
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: pvarga at inf.u-szeged.hu
                CC: barraclough at apple.com, zherczeg at webkit.org,
                    msaboff at apple.com


If a minimum matching size (minimumSize) of parenthetical assertion is equal to the following terms width in the pattern then 
the matching of the assertion fails. The calculation of the number of potentially matching characters (countToCheck) should be
changed in case of parenthetical assertions.

Eg.:
"abad".match(/a(?=d)./);
result: null
expected: ad

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