Re: [Caml-list] Strange File IO bug

[Gerd Stolpmann <info@gerd-stolpmann.de>]

[-- Attachment #1: Type: text/plain, Size: 1385 bytes --]

Am Mittwoch, den 27.07.2016, 18:56 +0200 schrieb Adrien Nader:
> Hi,
> 
> On Tue, Jul 26, 2016, Dmitriy Musatkin wrote:
> > Hi all,
> > 
> > I maintain a small OCaml program that generates some data, writes it to a
> > temporary file and creates another process, which then reads that temporary
> > file. Recently, I've received a few reports from users that the program
> > generates an empty file when it should not. All of the affected users run
> > either 64bit Win7 or Win10. I have access to one of those users' machines,
> > and I can reproduce the issue consistently, however I'm not able to
> > reproduce the issue on any other machine.
> > 
> > The file io part looks something like following:
> > let oc = open_out_bin file in
> > output_string oc s;
> > close_out oc
> > 
> 
> Most probably, "flush oc" before "close oc": out_channel is buffered. :) 

No. close implies flush.

Another cause could be a network drive, and a synchronization issue.

Gerd



> -- 
> Adrien Nader
> 

-- 
------------------------------------------------------------
Gerd Stolpmann, Darmstadt, Germany    gerd@gerd-stolpmann.de
My OCaml site:          http://www.camlcity.org
Contact details:        http://www.camlcity.org/contact.html
Company homepage:       http://www.gerd-stolpmann.de
------------------------------------------------------------


[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 473 bytes --]