c/6660: Typedeffed unnamed structs/unions do not compile with gcc-3.1

[Nathanael Nerode]

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6660

Jakub, your recent patch appears to have fixed this.

Anton, can you confirm that it's working now so I can close the bug report?

--Nathaanel