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Date: Sun, 23 May 2004 09:36:00 -0000
From: Christopher Faylor <cgf-no-personal-reply-please@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: ftruncate64() question?
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References: <NUTMEGnzSkqx5P7wS74000001fc@NUTMEG.CAM.ARTIMI.COM> <6.1.0.6.0.20040521150946.03262f68@pop.theworld.com> <20040521192359.GA6832@coe.bosbc.com> <Pine.GSO.4.58.0405211603090.21907@slinky.cs.nyu.edu> <cb51e2e04052113071fa8593@mail.gmail.com> <Pine.GSO.4.58.0405211614110.21907@slinky.cs.nyu.edu> <20040521203759.GB7790@coe.bosbc.com> <00ba01c43f74$50560f30$64fda287@docbill002> <Pine.CYG.4.58.0405211604310.3524@fordpc.vss.fsi.com> <00af01c4403b$42c1c5e0$64fda287@docbill002>
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On Sat, May 22, 2004 at 04:24:22PM -0400, Bill C. Riemers wrote:
>> What's wrong with ftruncate?
>
>ftruncate fails with files larger >= 2GB because off_t gets interpreted as
>32 bit signed integer...

  bash-2.05b$ cat off_t.c
  #include <sys/types.h>
  #include <stdio.h>
  int
  main (int argc, char **argv)
  {
    printf ("sizeof(off_t) = %d\n", sizeof(off_t));
    exit (0);
  }

  bash-2.05b$ ./off_t
  sizeof(off_t) = 8

>I can find some archived cygwin messages referencing bug fixes to
>ftruncate64 in the cygwin.dll.  However, using ftruncate64 results in an
>unresolved symbol.

You don't use ftruncate64.  You use ftruncate.  Cygwin is 64 bit by default.

>In fact based on those messages, I inserted the following code in my
>program as a workaround for a truncate64() function:

How about referencing these messages so we'd have some clue as to what
you're talking about?

cgf

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