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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/93483] ICE in gfc_constructor_copy, at
 fortran/constructor.c:103
Date: Fri, 14 Oct 2022 19:24:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D93483

--- Comment #21 from anlauf at gcc dot gnu.org ---
(In reply to Mikael Morin from comment #17)
> Like this for the first part of the test from the patch:
>=20
> diff --git a/gcc/fortran/arith.cc b/gcc/fortran/arith.cc
> index 9e079e42995..5e96bb9658e 100644
> --- a/gcc/fortran/arith.cc
> +++ b/gcc/fortran/arith.cc
> @@ -1267,6 +1267,9 @@ reduce_unary (arith (*eval) (gfc_expr *, gfc_expr *=
*),
> gfc_expr *op,
>    if (op->expr_type =3D=3D EXPR_CONSTANT)
>      return eval (op, result);
>=20=20
> +  if (op->expr_type !=3D EXPR_ARRAY)
> +    return ARITH_INVALID_TYPE;
> +
>    rc =3D ARITH_OK;
>    head =3D gfc_constructor_copy (op->value.constructor);
>    for (c =3D gfc_constructor_first (head); c; c =3D gfc_constructor_next=
 (c))
>=20
>=20

Yeah, I was getting just rather close to this one...

This is probably the right way to go.=