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From: "mikael at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/66409] Reporting ambiguous interface when overloading
 assignment with polymorphic array
Date: Fri, 07 Oct 2022 21:08:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D66409

--- Comment #9 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Jeff Hammond from comment #2)
>=20
> My MCVE:
>=20
> module f
>     implicit none
>=20
>     interface test
>         module procedure test_f08
>         module procedure test_f08ts
>     end interface test
>=20
>     contains
>=20
>         subroutine test_f08(buf)
>             integer :: buf
>         end subroutine test_f08
>=20
>         subroutine test_f08ts(buffer)
>             type(*), dimension(..), intent(inout) :: buffer
>         end subroutine test_f08ts
>=20
> end module f

The following variant is not pretty, and I don't know if it does the job.
But at least it is accepted by the compiler.


module f
    implicit none

    interface test
        module procedure test_f08ts
    end interface test

    contains

        subroutine test_f08(buf)
            integer :: buf
        end subroutine test_f08

        subroutine test_f08ts(buffer)
            class(*), dimension(..), intent(inout) :: buffer
            select rank(a =3D> buffer)
              rank(0)
                select type(b =3D> a)
                  type is(integer)
                    call test_f08(b)
                end select
            end select
        end subroutine test_f08ts

end module f=