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From: Timo Sirainen <tss@iki.fi>
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Date: Mon, 09 Jun 2008 21:40:54 +0300
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Subject: Environment clearing broken in 7.0
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I think clearing environment using:

environ[0] =3D NULL;

has been kind of a semi-standard for a while now. At least Dovecot and
Postfix clears their environment this way. But this no longer works in
FreeBSD 7.0 (putenv(), environ[0]=3DNULL, putenv() -> everything is
visible again). Was this change intended, or will this be fixed?

Looks like I could work around this by using:

environ =3D NULL;

but I'm afraid what other OSes that change would break. I guess going
through environ and unsetenv()ing everything would work too, but it
feels annoyingly slow for such a simple operation.

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