http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51909
--- Comment #2 from mauro <gnumaurorusso at gmail dot com> 2012-01-20 00:49:04 UTC --- DEar Andrew, thansk for the answer. I have already posted to AVR support, as wrote in my previous post. Anyway, I would like to understand id the problem raises also in the "pure" gnu tool. How can I go on for this goal? Regards, Mauro.