>> GCC guesses wrong on occasion. It will remove code that has value that >> but does not produce an output because the language does not allow us >> to express it. > > Yes, the compiler is bad at guessing what you mean. It does not even > try; it only cares about what you *say*. I've had both SIGILL probes and memory zeroizers removed by GCC. I was very clear about what I said should be done. The language did not give me a way to tell GCC, please don't mess with this code and please ensure it executes like I've written it. Jeff
