[TUHS] fork

[Phil Budne via TUHS]

> But in main() of httpdp I invoke 
> signal(SIGCHLD, SIG_IGN); so I thought I took care of that?
>
> Could it be that old UNIX systems do not allow the signal-construction 
> for that? Or is something else going wrong?

I seem to recall that the magic property of discarding zombies if
SIGCHLD is ignored was introduced by AT&T (in System V?), later made
user controllable in one of the Grand Unification effort [SUSv2?]

I also have vague recollection of some signal define having different
spellings in the different camps, but can't find any trace of it
having been SIGCHILD [sic]!