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From: gpriv@axonx.com
Newsgroups: comp.lang.ada
Subject: Re: Ada.Directories.Size wraps on over 2Gb files
Date: Mon, 10 Dec 2007 17:36:03 -0800 (PST)
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Date: 2007-12-10T17:36:03-08:00
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On Dec 10, 8:29 pm, "Randy Brukardt" <ra...@rrsoftware.com> wrote:
> <gp...@axonx.com> wrote in message
>
> news:0db40dde-17f0-40a9-9dc0-55f9b0a8e1b1@x69g2000hsx.googlegroups.com...
>
> > Ada.Directories.Size wraps on over 2Gb files returning negative
> > number.  I saw that was mentioned in
>
> Sounds like a compiler bug. Ada.Directories.Size is supposed to return the
> correct answer or Constraint_Error. Constraint_Error only if the type
> File_Size can't hold the value (for instance, if it is 32-bits on a compiler
> that only supports 32-bit integers). You didn't say what compiler that you
> are using, but you should contact your vendor.
>
> BTW, it isn't possible for Ada.Directories.Size to return a negative number
> unless something is *really* screwed up, because type
> Ada.Directories.File_Size does not include negative numbers. They'd have to
> have suppressed range checking of the result...
>
>                                Randy.

I am using:

GPS 4.1.3 (20070913) hosted on pentium-mingw32msv
GNAT GPL 2007 (20070405-41)

with following:

   type File_Size is range 0 .. Long_Long_Integer'Last;
   --  The type File_Size represents the size of an external file

Range checks might been suppressed in the library.