[PATCH] Fortran: a C interoperable function cannot have the CLASS attribute [PR95375]

[Steve Kargl]

On Tue, Dec 20, 2022 at 09:40:23PM +0100, Harald Anlauf via Fortran wrote:
> 
> we obviously forgot to extend the C interoperability check of the
> type of function results to CLASS variables and thus did not reject
> them.  Wrong code could lead to an ICE, see testcase by Gerhard.
> 
> Regtested on x86_64-pc-linux-gnu.  OK for mainline?
> 

Yes.  Thanks for the patch.

--
Steve