Comment How can you be sure it's identical? (Score 1) 315
Note: I have absolutely no position on this issue; I am not taking sides at all. My only question is how you can be certain that two programs are identical when you presumably don't necessarily know how each was compiled. Assuming all you have of rybka is a binary, but have the source to fruit, how could you be certain that you could get the code to compile in such a way as to produce identical assembly as disassembled rybka. Assuming a general standard IA32 machine, you still presumably have a lot of opportunities for variation in output from compiler to compiler, version to version, and even flags to flags.
I restate that I have no horse in this particular race; I've read of similar scenarios where a program was discovered to be a clone of another, and I've never understood how they can tell.