From: tlaronde@polynum.com
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] BUG!!! in Plan9 compiler!
Date: Fri, 23 Apr 2010 20:51:45 +0200 [thread overview]
Message-ID: <20100423185145.GA1722@polynum.com> (raw)
In-Reply-To: <239c41a785c8c5638338c2f007f50733@vitanuova.com>
On Fri, Apr 23, 2010 at 07:53:24PM +0100, C H Forsyth wrote:
>
> 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
It's a chance I was working with a software as described and as
explained as D.E. Knuth's METAFONT, with test suite.
Because without that, and with "erratic" results, I would probably
have dropped the ball...
Hopefully now, everybody knows that this is not only a "theorical"
divergence, but might have rather actual surprising results!
--
Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
http://www.kergis.com/
Key fingerprint = 0FF7 E906 FBAF FE95 FD89 250D 52B1 AE95 6006 F40C
next prev parent reply other threads:[~2010-04-23 18:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-22 15:29 tlaronde
2010-04-22 17:03 ` Bakul Shah
2010-04-22 17:36 ` tlaronde
2010-04-22 17:50 ` tlaronde
2010-04-22 19:08 ` geoff
2010-04-22 19:32 ` tlaronde
2010-04-22 20:07 ` Bakul Shah
2010-04-22 21:15 ` tlaronde
2010-04-22 21:26 ` tlaronde
2010-04-22 22:49 ` Bakul Shah
2010-04-23 7:42 ` tlaronde
2010-04-23 18:53 ` C H Forsyth
2010-04-23 18:51 ` tlaronde [this message]
2010-04-23 20:08 ` Bakul Shah
2010-04-23 20:46 ` ron minnich
2010-04-23 21:44 ` erik quanstrom
2010-04-23 22:34 ` erik quanstrom
2010-04-24 18:59 ` Bakul Shah
2010-04-24 21:47 ` Charles Forsyth
2010-04-25 0:31 ` erik quanstrom
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