https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88124
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kargl at gcc dot gnu.org
--- Comment #3 from kargl at gcc dot gnu.org ---
I think you're running into undefined behavior. Even though
the derive type defined in the include file is obviously
identical when the main program and subroutine are in
different files and the file is INCLUDEd and therefore
compiled separately, these are different types. The
namespaces for the main program and the subroutine are
different.
