Re: systems requiring exit?

[Thomas Dickey]

On Mon, 13 Nov 2006, Paul Eggert wrote:

> Howard Chu <address@hidden> writes:
>
> > As I recall, they implemented a fairly old draft of POSIX threads (and
> > not the same draft version as DCE or AIX) and with a compiler named
> > "c89" it's a given that they're not up to C99 specs. But still
> > reasonably modern.
> >
> > http://www.openldap.org/faq/data/cache/719.html
>
> If they conform to C89 there should be no problem.  In C89, returning
> N from 'main' is like 'exit(N)'.  This thread is about pre-C89 systems
> where the return value from 'main' is mangled.

For example (reading the comments that you made earlier, perhaps you 
should learn something old about C89):

> In that case, it sounds like we should suggest to people that they use
> the POSIX environment rather than try to port to a C-only environment.
> But I am surprised that a C-only environment would mess up in this
> way, even on mainframes.

VMS, where an application can return EXIT_SUCCESS or EXIT_FAILURE from 
main - but (still complying with C89), those are not 0 and 1 respectively.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net