> Yes, thanks.  All I wanted was some kind of reference to Ada and
> private type declaration.  Armed with these clues, an intelligent
> reader will find out the rest.

Great! I checked the following change in:

2008-01-08  Joel Brobecker  <brobecker@adacore.com>

        * dwarf2read.c (read_enumeration_type): Add comment.

Thanks,
-- 
Joel