From owner-freebsd-arch  Mon Feb 26  4:56:35 2001
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From: Terry Lambert <tlambert@primenet.com>
Message-Id: <200102261256.FAA16315@usr05.primenet.com>
Subject: Re: sbufs in userland
To: dillon@earth.backplane.com (Matt Dillon)
Date: Mon, 26 Feb 2001 12:56:17 +0000 (GMT)
Cc: ken@kdm.org (Kenneth D. Merry), arch@FreeBSD.ORG
In-Reply-To: <200102260749.f1Q7nGZ30306@earth.backplane.com> from "Matt Dillon" at Feb 25, 2001 11:49:16 PM
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> char *
> safe_replacef(char **pptr, const char *ctl, ...)
> {
>     va_list va;
>     char *optr = *pptr;
>         
>     if (ctl) {
>         va_start(va, ctl);
>         if (vasprintf(pptr, ctl, va) < 0)
>             fatalmem();
>         va_end(va);
>     } 
>     safe_free(&optr);
>     return(*pptr);
> }

So basically, why is there an "if (ctl)"?  Is it so you can pass
a NULL as the second argument to turn it into a "safe_free" call?
That's weird...


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.

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