e26edc93d6
~LocationMarkers() emits CatchDeletion, which calls Selection::remove(ArdourMarker*) which in turn calls Editor::marker_selection_changed(), which can cause a heap-use-after-free. So we first need to clear the location_markers map, before deleting the markers.
Please see the Ardour web site at https://ardour.org/ for all documentation..
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https://ardour.org/development.html