[Webkit-unassigned] [Bug 117141] New: [Qt] REGRESSION(r151020): fast/js/cyclic-proto.html crashing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117141

           Summary: [Qt] REGRESSION(r151020): fast/js/cyclic-proto.html
                    crashing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zarvai at inf.u-szeged.hu
                CC: allan.jensen at digia.com, jocelyn.turcotte at digia.com,
                    akling at apple.com, rafael.lobo at openbossa.org,
                    kadam at inf.u-szeged.hu
            Blocks: 79668,117071


It seems r151020 made fast/js/cyclic-proto.html to crash on Qt bots. It not crashing on all Qt bots, but there are crashes on 32 / 64 bit and WK1 / WK2 builds, too.

Crash log in Qt Release WK1 32bit
http://build.webkit.org/results/Qt%20Linux%20Release/r151100%20%2860605%29/fast/js/cyclic-proto-crash-log.txt

Backtrace from Qt WK1 64bit:
https://gist.github.com/azbesthu/5697017

Crash log on Qt Release WK2 32bit:
http://build.webkit.sed.hu/results/x86-32%20Linux%20Qt%20Release%20WebKit2/r151100%20%2835948%29/fast/js/cyclic-proto-crash-log.txt

Backtrace from Qt WK2 64bit:
https://gist.github.com/azbesthu/5697094

Can you check it please?

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