https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102079
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-09-26
Ever confirmed|0 |1
--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #3)
> I think the problem here is that fortran uses "long int" while size_t
> interoperate with "unsigned long int".
> Does fortran standard promise that the value should inter-operate with
> size_t as well?
This is a matter for the compiler.
In this case, the documentation states
For arguments of @code{CHARACTER} type, the character length is passed
as a hidden argument at the end of the argument list. For
deferred-length strings, the value is passed by reference, otherwise
by value. The character length has the C type @code{size_t} (or
@code{INTEGER(kind=C_SIZE_T)} in Fortran).
so the documentation is actually inconsistent (but then, interoperbility
between Fortran integers and C unsigned types is sort of assumed).
The library uses gfc_charlen_type, which is a typedef to size_t.
So, we can fix this either way. It would probably be best to have
size_t in the character lengths in the front end as well.
