[Webkit-unassigned] [Bug 107812] New: [Qt] Hidden WebView triggers crash on exit.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=107812

           Summary: [Qt] Hidden WebView triggers crash on exit.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: milian.wolff at kdab.com


Open this file in qmlscene and close it:
~~~~~ test.qml ~~~~~
import QtQuick 2.0
import QtWebKit 3.0
import QtWebKit.experimental 1.0

WebView {
  visible: false
}
~~~~~

This will trigger a crash, see http://paste.kde.org/655388/ for a valgrind log and http://paste.kde.org/655394/ for a GDB backtrace. It shows that the m_rootLayer in LayerTreeRenderer is invalid, when called from LayerTreeRenderer::purgeGLResources. Other places contain explicit checks for the validity, so maybe the check is just missing there?

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