[Bug fortran/64980] [5 Regression] ICE in trans-expr.c

["mikael at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64980

--- Comment #9 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Bernd Edlinger from comment #8)
> I will post this new patch, which combines Mikael's patch and
> fixes class_41.f03 and these test cases,

Actually, my patch was not supposed to be a real fix, rather a tip telling
where to look at.

(In reply to Bernd Edlinger from comment #8)
> The call of get_d_position is now rewritten as follows:
> 
>   this.22 = VIEW_CONVERT_EXPR<struct
> __class_muli_trapezium_Muli_trapezium_t_t>(node);
>   D.3752 = node._vptr->get_d_position (&this.22);
>   this.23 = VIEW_CONVERT_EXPR<struct
> __class_muli_trapezium_Muli_trapezium_t_t>(node);
>   D.3754 = &this.23;
>   D.3755 = D.3754->_data->dim;
>   D.3756 = (integer(kind=8)) D.3755 + -1;
> 
It seems to me that the second VIEW_CONVERT_EXPR is not necessary.
If that's correct, there should be two references, one through
VIEW_CONVERT_EXPR for the function call, and one without VIEW_CONVERT_EXPR to
use for interface mapping (to get the resulting size).