[Bug 647757] New: [bin] Doesn't check if an element is still a child before changing the state

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=647757
  GStreamer | gstreamer (core) | git

           Summary: [bin] Doesn't check if an element is still a child
                    before changing the state
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: slomo at circular-chaos.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


See attached patch, the element could be removed between getting it from the
iterator and setting its state

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