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From: "Marko Kreen" <markokr@gmail.com>
To: Pavel Roskin <proski@gnu.org>
Cc: linux-sparse@vger.kernel.org
Subject: Re: confusing shift warning
Date: Fri, 25 Apr 2008 11:34:58 +0300	[thread overview]
Message-ID: <e51f66da0804250134g7f05cc8fp9011d508f49295e3@mail.gmail.com> (raw)
In-Reply-To: <33544769883882222@unknownmsgid>

On 4/25/08, Pavel Roskin <proski@gnu.org> wrote:
> Quoting Marko Kreen <markokr@gmail.com>:
>
>
> > Platform: x64_64 linux, uint64_t -> unsigned long
> > Sparse: today's git (6dcc36a)
> >
>  ...
>
> > Guess - somewhere is hardwired that "long" == "32-bit"?
> >
>
>  Of course not.  But -m64 should be specified to enable 64-bit type sizes.
>
>
> > For reference:
> > $ cgcc -v -c test.c
> > sparse -v -c test.c -Dx86_64=1 -D__x86_64=1 -D__x86_64__=1
> >
>  ...
>
>  cgcc fails to add -m64.  It must be a bug in cgcc.  This would not produce
> the warning:
>
>  cgcc -m64 -no-compile Test.c

Ok, that somewhat explains it.  But:

    } elsif ($spec eq 'x86_64') {
        return (' -Dx86_64=1 -D__x86_64=1 -D__x86_64__=1' .
                &integer_types (8, 16, 32, $m32 ? 32 : 64, 64) .
                &float_types (1, 1, 33, [24,8], [53,11], [113,15]) .
                &define_size_t ($m32 ? "unsigned int" : "long unsigned int"));

It seems that cgcc defaults to 64-bit on x86_64, but sparse to 32-bit.
Isn't it sparse bug then?  Shouldnt it follow platform defaults?

-- 
marko

  parent reply	other threads:[~2008-04-25  8:35 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-25  7:53 confusing shift warning Marko Kreen
2008-04-25  8:03 ` Marko Kreen
     [not found] ` <33544769883882222@unknownmsgid>
2008-04-25  8:34   ` Marko Kreen [this message]
2008-04-25  8:58     ` Marko Kreen
     [not found]       ` <-3423297637585954490@unknownmsgid>
2008-04-25 13:37         ` Marko Kreen
     [not found]           ` <-8184754938437793631@unknownmsgid>
2008-04-25 14:37             ` Marko Kreen
2008-04-25 16:04               ` Pavel Roskin
2008-04-25 17:26                 ` Marko Kreen

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