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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/101871] Array of strings of different length passed as
 an argument produces invalid result.
Date: Mon, 16 Aug 2021 00:30:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101871

--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> -=
--
On Sun, Aug 15, 2021 at 07:21:42PM +0000, anlauf at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101871
>=20
> --- Comment #5 from anlauf at gcc dot gnu.org ---
> In array.c:gfc_match_array_constructor there's the following code:
>=20
> 1335          /* Walk the constructor, and if possible, do type conversio=
n for
> 1336             numeric types.  */
> 1337          if (gfc_numeric_ts (&ts))
> 1338            {
> 1339              m =3D walk_array_constructor (&ts, head);
> 1340              if (m =3D=3D MATCH_ERROR)
> 1341                return m;
> 1342            }
>=20
> Steve, you were the last one to work on this block.
> It appears that non-numeric ts are not handled (here).
> Can you give some insight?
>=20

Unfortunately, I can't remember why it's confined to numeric
types.  I did the simply thing of commenting out the if-stmt
and got an ICE.  I also tried explicitly setting the typespec
of each array element to the typespec of array constructor
and that also ICE'd.

I haven't had time to polk further.  I think at some point the
actual arg list is reduced to a formal argument list.  This
might loose the array constructor typespec when reducing/resolving
the arg list.=