https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80850
--- Comment #22 from DIL <liakhdi at ornl dot gov> --- On the other hand, I have another test which also crashes in clone_object() for the same reason, but does not involve gfc_vector.F90. It goes through line 710 of gfc_list.F90, function ListIterAppend(), where again a concrete type is argument associated with an unlimited polymorphic dummy variable. So I suspect the _len corruption happens here as well.
