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From: "anlauf at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/104573] ICE in resolve_structure_cons, at
 fortran/resolve.cc:1299
Date: Wed, 16 Feb 2022 20:10:34 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104573

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anlauf at gcc dot gnu.org

--- Comment #2 from anlauf at gcc dot gnu.org ---
(In reply to kargl from comment #1)
> Only want to access the components of a derived type if we have an actual
> derived type.

I was wondering if we also need to allow BT_CLASS.
So something like the following might also work:

diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc
index 266e41e25b1..2fa1acdbd6d 100644
--- a/gcc/fortran/resolve.cc
+++ b/gcc/fortran/resolve.cc
@@ -1288,15 +1288,17 @@ resolve_structure_cons (gfc_expr *expr, int init)
        }
     }

-  cons =3D gfc_constructor_first (expr->value.constructor);
-
   /* A constructor may have references if it is the result of substituting=
 a
      parameter variable.  In this case we just pull out the component we
      want.  */
   if (expr->ref)
     comp =3D expr->ref->u.c.sym->components;
-  else
+  else if (expr->ts.u.derived)
     comp =3D expr->ts.u.derived->components;
+  else
+    return false;
+
+  cons =3D gfc_constructor_first (expr->value.constructor);

   for (; comp && cons; comp =3D comp->next, cons =3D gfc_constructor_next =
(cons))
     {=