[Webkit-unassigned] [Bug 91587] New: REGRESSION(r122345): HTMLCollection::length() sometimes returns a wrong value

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=91587

           Summary: REGRESSION(r122345): HTMLCollection::length()
                    sometimes returns a wrong value
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InChromiumBugs
          Severity: Normal
          Priority: P1
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: andersca at apple.com, koivisto at iki.fi,
                    ojan at chromium.org, kling at webkit.org


Due to a bug in HTMLCollection::itemBeforeOrAfterCachedItem, HTMLCollection::length may return a wrong value (1 less than the actual length) sometimes on any port that uses V8 bindings or Objective-C bindings. This problem doesn't reproduce with JSC bindings because we call length() first and that sets the correct cached value.

http://code.google.com/p/chromium/issues/detail?id=137488

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