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Jonas Dreßler authored
The CLUTTER_IN_RELAYOUT flag is already set by clutter_actor_allocate_internal() and it's a bad idea to set and unset private flags in two places. With the introduction of the shallow relayout API we also started setting this flag inside clutter-stage.c on actors that are not the stage, which seems to cause weird warnings because apparently the flag is unset by the stage even though Clutter is still inside a vfunc_allocate() and calling clutter_actor_set_allocation() is still completely valid. So stop setting those flags in _clutter_stage_maybe_relayout() and instead introduce a new private flag for the stage to prevent reentries (which for example could happen by calling clutter_actor_get_allocation_box()) during the allocation cycle. Fixes GNOME/gnome-shell#2710 GNOME/mutter!1266
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