alt Hacker NewsYou might still make a mistake, even if you think you know the answer. It's much better to instrument the code to figure it out, or write a short test program.
You might still make a mistake, even if you think you know the answer. It's much better to instrument the code to figure it out, or write a short test program.
It's Undefined Behavior. So you can instrument all you want, the answer will still be wrong. You'll capture what your particular compiler does under some particular conditions (opt flags, surrounding code, etc.) but that will not be representative of what can happen in the general case (hint : anything can happen with UB).