[Webkit-unassigned] [Bug 26420] New: Still seeing occasional leaks from UString::sharedBuffer code

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26420

           Summary: Still seeing occasional leaks from UString::sharedBuffer
                    code
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: atwilson at google.com
                CC: levin at chromium.org


I'm still seeing occasional leaks from the sharedBuffer code when running
layout tests. They aren't reproducible 100%.

I have a "leaktest" shell script I run to look for leaks in a loop:

#!/bin/bash
rm /tmp/layout-test-results/DumpRenderTree*
until [ -e /tmp/layout-test-results/DumpRenderTree-leaks.txt ]; do
  WebKitTools/Scripts/run-webkit-tests --debug LayoutTests/fast/events/ --leaks
done

In my most recent test, it took about 40 iterations before it finally caught
the attached leak (not sure why --leaks is non-deterministic). The backtrace
(attached) is different every time, but it is always down in the
UString::sharedBuffer code.


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