standards/172273: unsetenv(3) issue according to autoconf

[Andrey Chernov]

The following reply was made to PR standards/172273; it has been noted by GNATS.

From: Andrey Chernov <ache at vniz.net>
To: Ed Maste <emaste at FreeBSD.org>
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: standards/172273: unsetenv(3) issue according to autoconf
Date: Tue, 02 Oct 2012 20:29:33 +0400

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 On 02.10.2012 20:08, Andrey Chernov wrote:
 > Attached simple patch should fix this issue (failing on test 3).
 
 Oops, see more correct version attached.
 
 
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  filename="getenv.patch"
 
 --- getenv.c.old	2012-10-02 20:01:33.000000000 +0400
 +++ getenv.c	2012-10-02 20:25:47.000000000 +0400
 @@ -675,11 +675,13 @@
  
  	/* Deactivate specified variable. */
  	envNdx = envVarsTotal - 1;
 -	if (__findenv(name, nameLen, &envNdx, true) != NULL) {
 +	/* Remove all occurences */
 +	while (__findenv(name, nameLen, &envNdx, true) != NULL) {
  		envVars[envNdx].active = false;
  		if (envVars[envNdx].putenv)
  			__remove_putenv(envNdx);
  		__rebuild_environ(envActive - 1);
 +		envNdx = envVarsTotal - 1;
  	}
  
  	return (0);
 
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