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From: "kargl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/95980] ICE in get_unique_type_string, at
 fortran/class.c:485
Date: Mon, 29 Jun 2020 18:38:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95980

kargl at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kargl at gcc dot gnu.org
           Priority|P3                          |P4

--- Comment #2 from kargl at gcc dot gnu.org ---
Patch is against svn r280156.

Index: gcc/fortran/match.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- gcc/fortran/match.c (revision 280157)
+++ gcc/fortran/match.c (working copy)
@@ -6174,7 +6174,10 @@ build_class_sym:
     {
       /* The correct class container has to be available.  */
       assoc_sym->ts.type =3D BT_CLASS;
-      assoc_sym->ts.u.derived =3D CLASS_DATA (selector)->ts.u.derived;
+      if (CLASS_DATA (selector)->ts.u.derived !=3D NULL)
+        assoc_sym->ts.u.derived =3D CLASS_DATA (selector)->ts.u.derived;
+      else
+        assoc_sym->ts.u.derived =3D selector->ts.u.derived;
       assoc_sym->attr.pointer =3D 1;
       gfc_build_class_symbol (&assoc_sym->ts, &assoc_sym->attr,
&assoc_sym->as);
     }=