On Mon, Nov 3, 2008 at 06:55, Unga <unga888@xxxxxxxxx> wrote: > cc -c other-options prog.c > {standard input}: Assembler messages: > {standard input}:101: Error: suffix or operands invalid for `mov' > {standard input}:4104: Error: suffix or operands invalid for `mov' > {standard input}:4553: Error: suffix or operands invalid for `mov' > {standard input}:5631: Error: suffix or operands invalid for `mov' > *** Error code 1 These messages are coming from the assembler. To see what assembler you're using try the -v flag. To preserve the assembly output emitted by GCC use -save-temps. Diego.