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From: mp@allegra.UUCP (Mark Plotnick)
Newsgroups: net.lang.c
Subject: Re: C Compiler bug
Message-ID: <6224@allegra.UUCP>
Date: Mon, 21-Jul-86 14:35:06 EDT
Article-I.D.: allegra.6224
Posted: Mon Jul 21 14:35:06 1986
Date-Received: Wed, 23-Jul-86 19:13:44 EDT
References: <501@bunny.UUCP>
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 10

The i /= f and i *= f bugs occur in the 4.3bsd-beta and 4.2bsd
compilers (I don't know about pre-4.2).  The bug is that the
computation is done in integer rather than floating point.  The 4.3bsd
and System V VAX compilers do the right thing.

We first noticed this bug on a 4.3bsd-beta system, when we saw
"i *= 0.7" compile into "clrl _i".  Incorrect code, but it's sure fast!

	Mark Plotnick
	allegra!mp