Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 beta 3/9/83; site vaxine.UUCP
Path: utzoo!linus!vaxine!ptw
From: ptw@vaxine.UUCP (P. T. Withington)
Newsgroups: net.bugs.4bsd,net.bugs.usg
Subject: "dd bs=2 conv=swab"  ==  "cat"  in 4.1bsd and sys3 (at least)
Message-ID: <284@vaxine.UUCP>
Date: Thu, 11-Aug-83 11:35:35 EDT
Article-I.D.: vaxine.284
Posted: Thu Aug 11 11:35:35 1983
Date-Received: Thu, 11-Aug-83 16:53:57 EDT
Organization: Automatix Inc., Billerica, MA
Lines: 17

Setting a buffer size of two causes dd(1) to ignore the swab conversion.  The
problem is due to line 332(4.1) 338(sys3):

		c = (ibc>>1) & ~1;

it should read:

		c = (ibc>>1);

I believe the coder couldn't make up their mind whether to round down and
count bytes, or to div and count words, so did both.  (Am I right?  Did I
win?)

Unless this is an undocumented feature...

			     't`   --Tucker (ptw@vaxine.UUCP)
			      ~