https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37131
--- Comment #25 from Mikael Morin <mikael at gcc dot gnu.org> --- (In reply to Dominique d'Humieres from comment #24) > I wonder if the above code is valid Fortran. y is not associated, so not suitable for passing as ARRAY argument to LBOUND: ARRAY shall be an array of any type. It shall not be an unallocated allocatable variable or a pointer that is not associated.