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	Replies: 1 - Last Post: Sep 28, 2007 9:33 AM by: alanc

vkotal

Posts: 266
From: CZ

Registered: 12/20/05

err/warn in libc
Posted: Sep 28, 2007 7:03 AM

Hi coders,

Tired of always writing something like this?

if ((ptr = malloc(size)) == NULL) {
(void) fprintf(stderr, "%s: out of memory\n", prog);
exit(1);
}

Well, now you can just write this:

if ((ptr = malloc(size)) == NULL)
err(1, "%s: out of memory", prog);

This is now possible thanks to err/warn function family being integrated
into libc in the ON consolidation.

More details and examples can be found in the man page, blog entry and
PSARC materials:

err(3C) / available in Nevada since build 72
http://blogs.sun.com/vlad/entry/closing_bsd_compatibility_gap
http://www.opensolaris.org/os/community/arc/caselog/2006/662/

v.
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alanc

Posts: 5,504
From: US

Registered: 3/9/05

Re: err/warn in libc
Posted: Sep 28, 2007 9:33 AM

in response to: vkotal

Vladimir Kotal wrote:
> Tired of always writing something like this?

No, but I am tired of having to replace err() and family in
code being ported from BSD/Linux, so hurrah! (In fact, I
just updated a machine to nv_74 yesterday just to get err()
so I didn't have to plugin my own copy yet again for another
X.Org library that now uses err().)

--
-Alan Coopersmith- alan dot coopersmith at sun dot com
Sun Microsystems, Inc. - X Window System Engineering
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