From owner-freebsd-current  Thu May 14 01:31:56 1998
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Date: Thu, 14 May 1998 17:30:57 +0900 (JST)
From: Michael Hancock <michaelh@cet.co.jp>
To: Julian Elischer <julian@whistle.com>
cc: "John S. Dyson" <dyson@FreeBSD.ORG>, jb@cimlogic.com.au,
        current@FreeBSD.ORG
Subject: Re: Undefined symbol "___error"
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On Thu, 14 May 1998, Julian Elischer wrote:

> I don't understand why the old errno can't continue to exist and be
> updated by all syscalls.
> (just for compatibility for now)

In a threaded environment you need a per-thread errno for compatibility.
There's no point in keeping 2 errnos around especially if one is going to
be shadowed by the other anyway.

In the single threaded app case, main will have a single thread associated
with it and an errno specific to that thread.

Regards,


Mike


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