[Webkit-unassigned] [Bug 137404] New: REGRESSION(r174226): [JSC] Crash when running the perf test Speedometer/Full.html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=137404

           Summary: REGRESSION(r174226): [JSC] Crash when running the perf
                    test Speedometer/Full.html
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: clopez at igalia.com
                CC: oliver at apple.com, rniwa at webkit.org, fpizlo at apple.com


The performance test Speedometer/Full.html is crashing since r174226 <http://trac.webkit.org/r174226>

I have double checked this: locally reverting r174226 fixes the issue.

I'm attaching a backtrace from the GTK port that I obtained running the following command on r174267:

$ Tools/Scripts/run-perf-tests  --platform gtk --release -2 Speedometer/Full.html

The issue is not GTK specific, it happens on all platforms:

 * https://build.webkit.org/builders/Apple%20MountainLion%20Release%20%28Perf%29/builds/10186
 * https://build.webkit.org/builders/Apple%20Mavericks%20Release%20%28Perf%29/builds/2725
 * https://build.webkit.org/builders/EFL%20Linux%2064-bit%20Release%20WK2%20%28Perf%29/builds/3378
 * https://build.webkit.org/builders/GTK%20Linux%2064-bit%20Release%20%28Perf%29/builds/944

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