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To: Levi Morrison <levim@php.net>
Cc: Andrea Faulds <ajf@ajf.me>, Pierre Joye <pierre.php@gmail.com>, PHP
	internals <internals@lists.php.net>, Laruence <laruence@php.net>
Date: Thu, 25 Dec 2014 00:27:04 +0100
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Subject: Re: [PHP-DEV] About SUCCESS/FAILURE
From: johannes@schlueters.de (Johannes =?ISO-8859-1?Q?Schl=FCter?=)

On Wed, 2014-12-24 at 11:13 -0700, Levi Morrison wrote:

> I'm asking for specific things. The reason is that some API's do a
> non-zero error code; the fact that they are negative is a detail that
> we should not need to care about.

My guess is that positive values more often might have a meaning ("5
items changed", "address 0x1234") whereas negative values less often
have a meaning. Also passing -1 as parameter is more often invalid. Thus
passing -1 is making debug output look more suspicious.

        (while there are  cases where -1 is valid, see recent famous pid
        = fork(); /* ... */ kill(pid, SIGKILL); issue)

johannes