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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/86277] Presence of optional arguments not recognized
 for zero length arrays
Date: Mon, 12 Jun 2023 07:56:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D86277

--- Comment #23 from Mikael Morin <mikael at gcc dot gnu.org> ---
(In reply to Mikael Morin from comment #22)
>=20
> diff --git a/gcc/fortran/trans-array.cc b/gcc/fortran/trans-array.cc
> index 1c7ea900ea1..cc1dddbeb33 100644
> --- a/gcc/fortran/trans-array.cc
> +++ b/gcc/fortran/trans-array.cc
> @@ -1117,7 +1117,7 @@ gfc_trans_allocate_array_storage (stmtblock_t * pre,
> stmtblock_t * post,
>=20=20
>    desc =3D info->descriptor;
>    info->offset =3D gfc_index_zero_node;
> -  if (size =3D=3D NULL_TREE || integer_zerop (size))
> +  if (size =3D=3D NULL_TREE)
>      {
>        /* A callee allocated array.  */
>        gfc_conv_descriptor_data_set (pre, desc, null_pointer_node);

This regresses on pr108065.f90 (that's a few extra analyzer warnings),
and on pr69955.f90 (that's one extra __builtin_malloc).=