>No. That's not done by GCC or GNU as. >It's how Intel/AMD CPU parses the machine code. There are no "delimeters" in >machine code so the CPU regards "00 5d c3" as an instruction. objdump (from >Binutils) just emulates the behavior of CPU. But as you can see in the output of "disass /r main", it the GDB or GCC that forms such a machine code. CPU won't fetch any instruction until "run" command is used. Therefore, I think it is GCC or GDB that forms such a machine code. Regards, Mahmood