[J3] CFI_establish and elem_len for zero-length character strings and empty types/structs

[Steve Lionel]

On Fri, Jul 23, 2021 at 6:02 AM Bader, Reinhold via J3 <
j3 at mailman.j3-fortran.org> wrote:

> Given that for the case of a Fortran string we're talking about a
>
> CHARACTER(len=*)
>
> declaration in the Fortran interface which is non-interoperable anyway,
> permitting all elem_len values that can arise in Fortran would follow the
> principle of least surprise.
>

As of F2018, CHARACTER(LEN=*) is interoperable with a C descriptor. This
can catch the unwary.

Steve

>
>
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