Ada83 Ada95 incompatibility with renames

[Klaus Wyss <klaus.wyss@ubs.com>]

I tried to compile our old Ada83 sources with GNAT (on windows NT).
I get an error with the following construct

generic
package X is
   task Y is
      entry Z;
   end Y;
   procedure Z renames X.Z;
end X;

package body X is
   task body Y is
   begin
       accept Z;
   end Y;
end X;

this compiles fine on Ada83 (DEC Ada, Rational VADS) but not on GNAT.
If i move the rename to the body it compiles on GNAT but not on Ada83.
Is that a bug or an incompatibility ??

Klaus Wyss
Union Bank of Switzerland