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Message-ID: <000501c308f4$2c001070$c2020c0a@jbaker1200>
From: "Jeff Baker" <jbaker AT qnx DOT com>
To: "Max Bowsher" <maxb AT ukf DOT net>, <cygwin AT cygwin DOT com>
References: <003d01c308ed$07e6e670$78d96f83 AT pomello>
Subject: Re: CompactFlash Disk Geometry
Date: Tue, 22 Apr 2003 13:25:29 -0400
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I wouldn't expect to see it print a full 64 bit integer, but I was wondering
why it's pushing the rest of the data out of place.

VC:  15680 1 1 512
Cygwin: 15680 0 1 1

If it was merely a problem with printing the 64 bit argument then shouldn't
that be the only one that's mangled in the output?  In this data '15680' is
coming from the LARGE_INTEGER but I don't know where the zero is coming
from, or why the last element goes from 512 to 1, or where the 512 vanishes
to.

> Jeff Baker wrote:
> > Ok so allow me to correct myself here.  The 'Cylinders' element in the
> > DISK_GEOMETRY structure is a LARGE_INTEGER, which isn't being printed
> by a
> > simple printf("%d").  If I print the Cylinders.LowPart element the
> output
> is
> > correct.  Since trying to printf a LARGE_INTEGER works on both Visual
> C
> and
> > a version of Watcom I have, is this a bug in Cygwin?
>
> Why would you expect %d to print a LARGE_INTEGER? I suspect that your
> Visual
> C and Watcom programs will give incorrect output for values larger than
> 2^31.
>
> Printing 64-bit ints is rather nonstandard, unfortunately.
>
> For MSVCRT, I guess (untested) you would need %I64d.
> For newlib (Cygwin), you will need %lld or %qd.
>
>
>
> Max.
>


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