>> ...POSIX and _t... > IMO, that's not something to casually dismiss with a smiley. If it's reserved, don't do it. It only matters when your own type names

>> ...POSIX and _t... > IMO, that's not something to casually dismiss with a smiley. If it's reserved, don't do it. It only matters when your own type names collide with any of the POSIX type names, and it's not like POSIX is changing much nowadays. A collision with 'recent' C standard additions is much more likely, and those are not predictable anyway (such as alignas() or unreachable()).