On Thu, Dec 20, 2018 at 06:25:05PM -0800, Joe Perches wrote: > I agree it's not a very good message nor is bool use > of structure members a real problem except in very > few cases. I think the issue is that the link it shows lacks the context of the discussion thread - and the actual guidance here is more complicated. A discussion in coding style would probably be better. - Don't put multiple true/false fields in a single struct (be it bool, u8, int, etc) - use bit-fields instead. - Don't use bool if cache line layout matters, its size and alignment varies - Do use bool to clearly express that the variable, parameter or structure member can only take on a true/false value. .. and I also seem to remember there is a small performance downside to bool stores in some ABIs as the compiler has to cannonize stores to 0 or 1? But this also eliminates certain bug classes.. Jason
