[Patch, fortran] A first small step towards CFI descriptor implementation

[Richard Biener]

On Tue, Jul 31, 2018 at 2:07 PM Paul Richard Thomas
<paul.richard.thomas@gmail.com> wrote:
>
> Daniel Celis Garza and Damian Rouson have developed a runtime library
> and include file for the TS 29113 and F2018 C descriptors.
> https://github.com/sourceryinstitute/ISO_Fortran_binding
>
> The ordering of types is different to the current 'bt' enum in
> libgfortran.h. This patch interchanges BT_DERIVED and BT_CHARACTER to
> fix this.
>
> Regtests on FC28/x86_64. OK for trunk?

That's an ABI change, correct?

Richard.

> Cheers
>
> Paul
>
> 2018-07-31  Paul Thomas  <pault@gcc.gnu.org>
>
>     * gcc/fortran/libgfortran.h : In bt enum interchange BT_DERIVED
>     and BT_CHARACTER for CFI descriptor compatibility(TS 29113).