My personal advice: If you're starting a new codebase and don't have to care for legacy compilers, use it. Otherwise, it's a case by case decision. I agree th

My personal advice: If you're starting a new codebase and don't have to care for legacy compilers, use it. Otherwise, it's a case by case decision. I agree that you should never typedef a type different than _Bool to bool if you want to avoid a world of hurt, and I'd argue that using true and false in a C codebase is harmful as well.