From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
From: "Douglas A. Gwyn" <DAGwyn@null.net>
Message-ID: <3D34F280.CD984120@null.net>
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References: <6333e0a01e113662f55923372089278a@plan9.bell-labs.com>
Subject: Re: [9fans] useful language extension, or no?
Date: Wed, 17 Jul 2002 08:58:40 +0000
Topicbox-Message-UUID: cf0f4de2-eaca-11e9-9e20-41e7f4b1d025

presotto@plan9.bell-labs.com wrote:
> #define sa_len          sa_union.sa_generic.sa_len2

A lot of that kind of thing was due to changing an interface to be
more general but wanting to avoid having to edit existing code that
was written before the data type changed.  This kind of thing dates
back to 7th Edition Unix time functions, where the &l in the 7th
Edition function interface corresponds to 6th Edition's pointer to
an array of two ints.