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Date: Wed, 3 Nov 1999 13:39:04 -0500
From: Clint Adams <schizo@debian.org>
To: Bart Schaefer <schaefer@candle.brasslantern.com>
Cc: zsh-workers@sunsite.auc.dk
Subject: Re: Bad configure test for getpwent() ?
Message-ID: <19991103133904.A6549@dman.com>
References: <991103103452.ZM19665@candle.brasslantern.com>
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In-Reply-To: <991103103452.ZM19665@candle.brasslantern.com>; from schaefer@candle.brasslantern.com on Wed, Nov 03, 1999 at 10:34:52AM +0000

>     pw1=getpwnam(buf);
>     sprintf(buf, "%d:%d", rand(), getpid());
>     pw2=getpwnam(buf);
>     exit(pw1!=0 && pw2!=0 && !strcmp(pw1->pw_name, pw2->pw_name));

It's not comparing the pointers; it's comparing the names.

> I don't think getpwent() is required to return a unique pointer each time;
> that is, I think it's allowed to re-use an internal static buffer for each
> entry that it returns.  That would mean that this test always succeeds ...