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X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Tue, 27 Aug 2002 20:40:37 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	Cynthia Randles <crandles AT princeton DOT edu>
cc:	cygwin AT cygwin DOT com
Subject:	Re: cygwin gcc and arrays -- Possible bug???
In-Reply-To:	<3D6C06A3.9B2A7853@princeton.edu>
Message-ID:	<Pine.GSO.4.44.0208272037460.26315-100000@slinky.cs.nyu.edu>
MIME-Version:	1.0

Which version of gcc are you using?  Which libraries are you linking in?
How are you allocating/declaring rad_array and vol_array?  Is this a C or
C++ program?  Please also check your loop limits - are you sure you wanted
a '<=' there, rather than a '<'?
	Igor

On Tue, 27 Aug 2002, Cynthia Randles wrote:

> I was wondering if anyone could help me.
> I have the following lines of code:
>
>         for (i = 0; i <=  NUMBINS; ++i)
>         {
>               printf("--------read in input files---------\n");
>               printf("The value if i is %d\n", i);
>               fscanf(ifp1, "%f\n", &radius_microns);
>               fscanf(ifp2, "%f\n", &volfraction);
>               printf("The value of radius is %f\n", radius_microns);
>               rad_array[i]= radius_microns;
>
>               printf("The radius is rad_array[%d]=%f\n\n",i, rad_array[i]);
>
>               printf("The value of volfraction is %f\n", volfraction);
>               vol_array[i] = volfraction;
>               printf("The volfraction is vol_array[%d]=%f\n", i, vol_array[i]);
>               printf("The value of rad_array[%i] is %f\n", i, rad_array[i]);
>               printf("----------end of read in input file------\n\n");
>         }
>
> which, in cygwin produces:
>
> --------read in input files---------
> The value of i is 0
> The value of radius is 0.200000
> The radius is rad_array[0] = 0.200000
>
> The value of volfraction is 0.330000
> The volfraction is vol_array[0]=0.330000
> The value of rad_array[0] is 0.330000
> ----------end of read in input file-----
>
> as you can see, for some reason rad_array[0] is being reassigned even
> though I never ask for that!!!
>
> my red-hat linux gcc produces:
>
> --------read in input files---------
> The value of i is 0
> The value of radius is 0.200000
> The radius is rad_array[0] = 0.200000
>
> The value of volfraction is 0.330000
> The volfraction is vol_array[0]=0.330000
> The value of rad_array[0] is 0.200000
> ----------end of read in input file-----
>
> which is the right answer.  I cannot figure out what is going
> on with cygwin, and I haven't found a post that can help me.  Any
> help is appreciated.
>
> Thanks,
> Cynthia

-- 
				http://cs.nyu.edu/~pechtcha/
      |\      _,,,---,,_		pechtcha AT cs DOT nyu DOT edu
ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski
    '---''(_/--'  `-'\_) fL	a.k.a JaguaR-R-R-r-r-r-.-.-.  Meow!

It took the computational power of three Commodore 64s to fly to the moon.
It takes a 486 to run Windows 95.  Something is wrong here. -- SC sig file


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