http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50922
--- Comment #7 from Rolf Pfister <pfister at pci dot uzh.ch> 2011-10-31 19:58:07 UTC --- I wrote: > long x=2147483647; > ulong c; > for(c=0;c<2147483648UL;c++) > { > lcdSendData(x--); > } I tried this new variant with "gcc (Ubuntu 4.4.1-4ubuntu9) 4.4.1" With this version it works correctly. Also with avr-gcc this variant works correctly. So the problem seems really to be solved. Rolf