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From: "jvdelisle at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/98890] ICE on reference to module function
Date: Fri, 19 Feb 2021 16:47:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98890

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jvdelisle at gcc dot gnu.o=
rg

--- Comment #5 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Tobias Burnus from comment #4)
> Related issue but without an ICE:
>=20
>    contains
>       integer function f1()
>         !f2 =3D 1   ! gives an error as expected
>         j =3D f2    ! <<<< accepted; cast of function addr to integer(kin=
d=3D4)
>         f1 =3D 1    ! =E2=86=91 ifort: 'already been used as an external =
function name'
>       end function
>       integer function f2()
>         f2=3D1
>       end function
>    end

A variation with a question:

program p1
  implicit none
  integer j, k
  j =3D 99
  k =3D f1()
  print *, j, k
contains=20=20
  integer function f1()
    !f2 =3D 1
    j =3D f2  ! Should this be warned or rejected?
    print *, j
    f1 =3D 1  ! This should not be rejected
  end function
  integer function f2()
    f2=3D1
  end function
end=