[Webkit-unassigned] [Bug 119003] New: [GTK] GtkAdjustmentWatcher idle source not correctly handled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=119003

           Summary: [GTK] GtkAdjustmentWatcher idle source not correctly
                    handled
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cgarcia at igalia.com


GtkAdjustmentWatcher::updateAdjustmentsFromScrollbarsLater() creates a new idle source and initializes m_updateAdjustmentCallbackId, which is used everywhere and specially in the destructor to cancel the source when the GtkAdjustmentWatcher is deleted. However, m_updateAdjustmentCallbackId is reset to 0 in GtkAdjustmentWatcher::updateAdjustmentsFromScrollbars() only when not returning early. This method is public and not only called by the updateAdjustmentCallback, which means that a call to updateAdjustmentsFromScrollbars could reset the m_updateAdjustmentCallbackId without actually destroying the source.

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