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From: Stian <stian@knowledge-network.no>
To: nobody@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org,
Subject: Re: c/7527: gcc 2.95.3 and gcc 3.0.4 generate incorrect code
Date: Thu, 08 Aug 2002 03:16:00 -0000	[thread overview]
Message-ID: <20020808101603.8146.qmail@sources.redhat.com> (raw)

The following reply was made to PR c/7527; it has been noted by GNATS.

From: Stian <stian@knowledge-network.no>
To: gcc-gnats@gcc.gnu.org
Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org, nobody@gcc.gnu.org, 
	tomdean@asus.tddhome
Subject: Re: c/7527: gcc 2.95.3 and gcc 3.0.4 generate incorrect code
Date: 08 Aug 2002 12:08:55 +0200

 The second conditional makes more sense if you use () at the right places
 
 if(!(_io_ports[0x39]&0x80))
 
 
 If you don't add them, your statement is the same as
 
 if((!_io_ports[0x39])&0x80)
 
 That always come out false, then ! makes the result of the io-read either 0 or 1.
 
 
 
 Stian
 
 
 


             reply	other threads:[~2002-08-08 10:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-08-08  3:16 Stian [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-08-07 11:46 rth
2002-08-07 10:36 Thomas D. Dean

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