I've just uploaded this release to http://www.pogner.demon.co.uk/components/bc/ Changes: Added Unbounded Collections and Unbounded Ordered Collections. BC.Support.Bounded, BC.Support.Unbounded subprogram specs were confused about whether indexing was from 0 (as in the C++) or 1 (in the Ada). BC.Support.Unbounded.Append(2) had an error when appending after the first element. Corrected a misuse of a GNAT compiler "feature" (A procedure and a protected type entry in the same scope had the same name; you can't rely on the fact that only entries can have 'Caller applied to resolve these names). Added ObjectAda-special versions of the Bag test driver.