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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/58624] gcc internal compiler error: Segmentaion
 fault in insert_to_assembler_name_hash
Date: Tue, 10 Aug 2021 22:58:14 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D58624

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |6.0
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #18 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jason Merrill from comment #8)
> (In reply to Markus Trippelsdorf from comment #7)
> > static __typeof 0 a __attribute__ ((__weakref__ ("")));
> > template <typename> class A
> > {
> >   static __thread int b;
> > };
>=20
> The problem with this testcase is that set_decl_tls_model adds A<T>::b, an
> uninstantiated template, to the symbol table.  This ICE was introduced by
> honza's r211689.
>=20
> I'll deal with the other testcase.

which seems like was fixed with r6-1888:
@@ -2523,8 +2523,12 @@ duplicate_decls (tree newdecl, tree olddecl, bool
newdecl_is_friend)
        }

       if (VAR_P (newdecl)
-         && DECL_THREAD_LOCAL_P (newdecl))
-       set_decl_tls_model (olddecl, DECL_TLS_MODEL (newdecl));
+         && CP_DECL_THREAD_LOCAL_P (newdecl))
+       {
+         CP_DECL_THREAD_LOCAL_P (olddecl) =3D true;
+         if (!processing_template_decl)
+           set_decl_tls_model (olddecl, DECL_TLS_MODEL (newdecl));
+       }
     }=