[Bug fortran/82064] [OOP] multiple incompatible definitions of extended derived type via module use

[daanvanvugt at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82064

--- Comment #1 from Daan van Vugt <daanvanvugt at gmail dot com> ---
the
!use mod_boris
should be
!use mod_f
to work around the problem in the attachment and code below