https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89366
--- Comment #2 from Bader at lrz dot de <Bader at lrz dot de> --- Fortran 2018 FDIS section 18.3.6, para 2, item 5, bullet 2: (5) any dummy argument without the VALUE attribute corresponds to a formal parameter of the prototype that is of a pointer type, and either • the dummy argument is interoperable with an entity of the referenced type (ISO/IEC 9899:2011, 6.2.5, 7.19, and 7.20.1) of the formal parameter, • the dummy argument is a nonallocatable nonpointer variable of type CHARACTER with assumed character length and the formal parameter is a pointer to CFI_cdesc_t, Note that as for all Fortran objects that don't have a C analog, interoperability is on the level of the procedure interface (not the object!), and the matching entity on the C side is the descriptor. Regards Reinhold
