Jeffrey Walton wrote: > You should consider making the interface easy to use correctly, and > hard to use incorrectly. That will help novice programmers avoid > mistakes.
Novice programmers need to learn that they need to look at the return value. Once they have learned this, everything is easy. > In that light, set the ptr to NULL to make it as safe as possible. With the same argument, you could claim that functions that can set errno should always set errno to 0 when they succeed. So that users don't need to set 'errno = 0;' before the call, if they want to inspect errno after the call, regardless of the return value. Bruno
