From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <239c41a785c8c5638338c2f007f50733@vitanuova.com>
From: C H Forsyth <forsyth@vitanuova.com>
Date: Fri, 23 Apr 2010 19:53:24 +0100
To: 9fans@9fans.net
In-Reply-To: <20100422224911.F14615B73@mail.bitblocks.com>
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Subject: Re: [9fans] BUG!!! in Plan9 compiler!
Topicbox-Message-UUID: 0cc53c86-ead6-11e9-9d60-3106f5b1d025

>As per C89 in this case the unsigned char value should be
>promoted to a *signed* int value.  The sum will be of type
>signed int and so the division will do the right thing. In
>kencc case it seems the sum has type unsigned int for some
>reason and further, the signed divisor (2) is promoted to an
>unsigned int. Seems like a bug.

on 19 April, I wrote:
>notably the compiler doesn't implement the value-preserving rules for comparisons. ...
>instead the compiler implements the older unsigned-preserving rule