[Bug 631580] Race in all the pad functions that don't require the pad to be active

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=631580
  GStreamer | gstreamer (core) | git

--- Comment #5 from Olivier Crete (Tester) <olivier.crete at ocrete.ca> 2011-04-11 14:21:33 UTC ---
Created an attachment (id=185702)
 View: https://bugzilla.gnome.org/attachment.cgi?id=185702
 Review: https://bugzilla.gnome.org/review?bug=631580&attachment=185702

pad: Add PARENT_REQUIRED flag and do not call functions if it is set and not
parent is set

This is the first step to prevent a possible race where a function is called
after it has
been removed from its parent element.

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