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From: "juergen.reuter at desy dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/99602] [11 regression] runtime error: pointer actual
 argument not associated
Date: Fri, 19 Mar 2021 09:53:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99602

--- Comment #29 from J=C3=BCrgen Reuter <juergen.reuter at desy dot de> ---
(In reply to Paul Thomas from comment #28)
> (In reply to J=C3=BCrgen Reuter from comment #27)
> > Created attachment 50432 [details]
> > reproducer, down to 6800 lines
>=20
> Hi Juergen,
>=20
> Stop! Yesterday's final is just fine. The problem is connected with the
> logic selecting the runtime error. The code for line 483 ends with
>=20
>                       D.5856 =3D model->_vptr->get_par_data_ptr (&model.1=
10,
> D.5855);
>                       if ((character(kind=3D1)[0:][1:1] * restrict)
> D.5855->chars.data !=3D 0B)
>                         {
>                           __builtin_free ((void *) D.5855->chars.data);
>                           (character(kind=3D1)[0:][1:1] * restrict)
> D.5855->chars.data =3D 0B;
>                         }
>                       if ((integer(kind=3D8)) (D.5856._data =3D=3D 0B))
>                         {
>                           _gfortran_runtime_error_at (&"At line 483 of fi=
le
> models.f90"[1]{lb: 1 sz: 1}, &"Proc-pointer actual argument \'model\' is =
not
> associated"[1]{lb: 1 sz: 1});
>                         }
>                       field_data_set (&class.109, 0B, 0B, 0B, 0B, 0B, 0B,
> 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, 0B, &D.58=
56,
> 0B, 0B, 0B);
>                     }
>=20
> The _data field of D.5856 is the result of the call to 'get_par_data_ptr'
> not the procedure pointer itself. The result is:
> class(modelpar_data_t), pointer :: ptr and the formal argument is:
> class(modelpar_data_t), intent(in), pointer, optional :: mass_data
>=20
> So the call is perfectly proper. The trouble is that the attributes of the
> proc_pointer result are not being used.
>=20
> I am about to start a gdb session :-)
>=20
> Paul

Cool, very good, I'm never really sure which max. size a reproducer is still
useful for you. Then I stop reducing further now.=