http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52301
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-21 03:42:56 UTC --- Can you provide the preprocessed source? Add -save-temps and attach the .i file? Also can you run "avr-gcc -v" and provide the output of that?
