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From: "sgk at troutmask dot apl.washington.edu" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/99506] internal compiler error: in record_reference, at
 cgraphbuild.c:64
Date: Wed, 10 Mar 2021 22:59:39 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99506

--- Comment #7 from Steve Kargl <sgk at troutmask dot apl.washington.edu> -=
--
On Wed, Mar 10, 2021 at 10:22:45PM +0000, anlauf at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99506
>=20
> --- Comment #6 from anlauf at gcc dot gnu.org ---
> (In reply to Richard Biener from comment #4)
> > I don't know fortran enough for what 'parameter' means in this context:
> >=20
> >    real(double),  parameter:: latt(jmax) =3D [(latt100(i)/100.d0, j=3D1=
,jmax)]
> >=20
> > but the middle-end sees a readonly global (TREE_STATIC) variable.
>=20
> There is a possibly related issue in pr91960.
>=20

Yes, same problem.  An uninitialized *variable* is used in
an implied-do loop, which is an ac-value expression.  Perhaps,
resolve.c(resolve_fl_parameter) needs to do some deeper=20
checking.=