[Bug fortran/37222] [OOP] Checks when overriding type-bound procedures are incomplete

[janus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37222

--- Comment #3 from janus at gcc dot gnu.org ---
Basically all the checks in this area have been fixed by now.

One of the last todo items is a carry-over from PR 35831:
* improve gfc_dep_compare_expr to catch more cases (and/or enable the warnings
in check_result_characteristics and check_dummy_characteristics, marked by
FIXMEs)