Hi Harald,

This is fine for mainline and for backporting if you feel so inclined.

Thanks for the patch.

Paul


On Mon, 16 Jan 2023 at 21:12, Harald Anlauf via Fortran <fortran@gcc.gnu.org>
wrote:

> Dear all,
>
> it appears that the fix for pr107874 uncovered a latent bug
> for the case of arrays of type character and size zero when
> passed to the intrinsics MERGE and SPREAD as SOURCE.  In that
> case, there is no constructor from which we could obtain
> another character length.  A reasonable solution seems to
> retain the array's character length.
>
> Since I could not find a simple case where this fails, I've
> added an assertion that we actually have a meaningful length.
>
> Regtested on x86_64-pc-linux-gnu.  OK for mainline?
>
> Thanks,
> Harald
>
>

-- 
"If you can't explain it simply, you don't understand it well enough" -
Albert Einstein