https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106035
kargl at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
--- Comment #2 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #0)
> % cat a.f90
> program bug
> implicit none
> integer i
> i = 42
> block
> import none ! <-- This is valid Fortran 2018
Note, there is a comma missing after import. So this isn't valid.
One finds these things while implementing a patch. The patch
includes a description of all constraints in F2018, but I did not
implement them all. For example, this is invalid (assuming i and
j are available via host association)
interface
subroutine foo
import, only : i
import
end subroutine foo
end interface
as is
interface
subroutine foo
import, only : i
import :: j
end subroutine foo
end interface
To do this correctly, gfortran likely needs IMPORT_NONE, IMPORT_ONLY, and
IMPORT_ALL enumerators and then gfc_current_ns->has_import_set would be
set according to one of these instead of using just 0 and 1 for a namespace.
