Re: [9fans] the declaration of main()

["Boyd Roberts" <boyd@planete.net>]

From: "Douglas A. Gwyn" <gwyn@arl.army.mil>
> I don't understand what you're talking about.  In 7th Edition
> Unix, which is where exit status and stdio were first widely
> used, return from main() (with or without a value) would
> automatically invoke the exit() function, which in turn
> invoked cleanup(), which if any stdio function was used
> would link with the buffer-flushing version instead of the
> no-op version.  Explicitly calling exit() would get the same
> exit() function, the same cleanup() function, etc.

yep, IIRC, sounds like the 7th ed /lib/crt0.s which eventually
called _exit() [the syscall].  exit() was a library function
which did the above and then called _exit().