I wonder why alloca+malloc/free was used in the first place and not straightforward malloc/realloc/free. The overhead of the latter should be negligible given t

I wonder why alloca+malloc/free was used in the first place and not straightforward malloc/realloc/free. The overhead of the latter should be negligible given that this is a DNS resolver. The overhead in fact could be negative due to simpler code and better cache utilization. Premature optimization is a root of all evil indeed.