diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -9732,6 +9732,12 @@ package body Exp_Ch6 is
                     New_Occurrence_Of (Etype (BIP_Func_Call), Loc),
                   Expression   => New_Copy_Tree (BIP_Func_Call))));
 
+      --  Manually set the associated node for the anonymous access type to
+      --  be its local declaration to avoid confusing and complicating
+      --  the accessibility machinary.
+
+      Set_Associated_Node_For_Itype (Anon_Type, Tmp_Decl);
+
       Expander_Mode_Save_And_Set (False);
       Insert_Action (Allocator, Tmp_Decl);
       Expander_Mode_Restore;