src/HOL/Library/old_recdef.ML

       Proof_Context.theory_of ctxt1
       |> Sign.add_path bname
       |> Global_Theory.add_thmss
         (((Binding.name "simps", flat rules), simp_att) :: ((eq_names ~~ rules) ~~ eq_atts))
       ||>> Global_Theory.add_thms [((Binding.name "induct", induct), [])]
-      ||> Spec_Rules.add_global name Spec_Rules.equational_recdef [lhs] (flat rules)
+      ||> Spec_Rules.add_global (Binding.name bname) Spec_Rules.equational_recdef [lhs] (flat rules)
       ||> null tcs ? Code.declare_default_eqns_global (map (rpair true) (flat rules));
     val result = {lhs = lhs, simps = simps', rules = rules', induct = induct', tcs = tcs};
     val thy3 =
       thy2
       |> put_recdef name result