Hi Gordon, I'm not familiar with the "-fast" flag, other than in Sun's compiler. I can only presume that it is either a Macintosh-only extension (or mistaken). What do you see when you do this: gcc -v -fast -save-temps -fverbose-asm -o test test.c That should indicate which compiler flags are being enabled, in the assembly file. How does it compare to: gcc -v -O2 -save-temps -fverbose-asm -o test test.c --Eljay
