This is specifically about hcreate/hsearch, which are utterly useless, since you only get one hash table at a time. The reason you don't want crap like this is

This is specifically about hcreate/hsearch, which are utterly useless, since you only get one hash table at a time. The reason you don't want crap like this is just that: it's crap. The _r versions look perfectly sensible.