Re: [PATCH] Fortran: -fc-prototypes, deferred shape and deferred length dummies [PR125902]

Thomas Koenig <[email protected]> Tue, 23 Jun 2026 07:02:57 +0200

Newsgroups	gmane.comp.gcc.patches,gmane.comp.gcc.fortran
Message-ID	<[email protected]>

Hello Harald,

> the subject already says it: we emitted the wrong C prototypes for
> deferred shape and deferred length dummies of interoperable procedures.
> Here we need to pass pointers to a CFI_cdesc_t structure.
> 
> There seems to be no existing testcase exercising -fc-prototypes,
> unless I missed it.  This one tests the output emitted by the frontend.

Thanks for finding this method! I had not come across
dg-begin-multiline-output  before. PR 120220 is about lack of testing
for -fc-prototypes; we can use that for other bugs fixed in the past; we
have had some regressions due to the lack of testing.

> OK for mainline / backport to 16-branch?

Yes. Thanks for the patch!

Best regards

	Thomas