On Thu, Jan 27, 2011 at 07:42:10PM +0100, Bruno Haible wrote: > Do you mean to say that GCC produces undefined behaviour for shifts of > negative values, even those where the result is negative (no overflow)? > I've never seen a sign of that.
I mean to say that left-shifting a negative value *at all* is undefined behavior. I doubt gcc will ever break it, but why not use my version of the code that's 100% safe and never invokes undefined behavior? Rich
