found 248167 4.4.1-1 thanks gnatmake test_83.ads gcc-4.4 -c test_83.ads test_83.ads:5:51: expect type derived from "T1" in instantiation test_83.ads:5:51: instantiation abandoned gnatmake: "test_83.ads" compilation error (sid)root@linux-xavier:~/tests# gnat -v GNAT 4.4.1