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From: viro@parcelfarce.linux.theplanet.co.uk
To: John Cherry <cherry@osdl.org>
Cc: linux-kernel@vger.kernel.org, Linus Torvalds <torvalds@osdl.org>
Subject: Re: IA32 (2.6.2 - 2004-02-05.22.30) - 3 New warnings (gcc 3.2.2)
Date: Fri, 6 Feb 2004 11:33:05 +0000	[thread overview]
Message-ID: <20040206113305.GF21151@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <200402061122.i16BMZ10009537@cherrypit.pdx.osdl.net>

On Fri, Feb 06, 2004 at 03:22:35AM -0800, John Cherry wrote:
> drivers/net/ne.c:168: warning: unused variable `irq'
> drivers/scsi/imm.c:1146: warning: `ports' might be used uninitialized in this function
> drivers/scsi/ppa.c:1006: warning: `ports' might be used uninitialized in this function

Sigh...  we have
        switch (dev->mode) {
        case IMM_NIBBLE:
        case IMM_PS2:
                ports = 3;
                break;
        case IMM_EPP_8:
        case IMM_EPP_16:
        case IMM_EPP_32:
                ports = 8;
                break;
        default:        /* Never gets here */
                BUG();
        }
	...
	/* use the value of 'ports' */

IOW, gcc doesn't realize that we never return from BUG().  AFAICS, it
should.  Some changes of __volatile__ semantics?

  reply	other threads:[~2004-02-06 11:33 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-02-06 11:22 John Cherry
2004-02-06 11:33 ` viro [this message]
2004-02-06 16:52   ` Linus Torvalds
2004-02-06 18:22     ` viro
2004-02-06 18:35       ` Petr Vandrovec
2004-02-06 18:42       ` Linus Torvalds
2004-02-06 18:47         ` viro
2004-02-06 19:09           ` viro
2004-02-10 13:32         ` Dick Streefland
2004-02-10 15:44           ` Randy.Dunlap
2004-02-08  1:00 Jon Foster
2004-02-08  5:45 ` viro

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