http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50314
--- Comment #6 from NickParker at Eaton dot com 2011-09-07 21:18:59 UTC --- >> How is TCNT1 defined? Again just attach the preprocessed source. Sorry, not sure how to get preprocessed source - I need to read the GCC manual. >From AVR header files for the ATmega128 :- (iom128.h) #define TCNT1 _SFR_IO16(0x2C)