strange behavior with camlp4 and #use

strange behavior with camlp4 and #use

[Peng Zang]

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Hi,

I am running 3.10.2 installed from GODI.  Findlib is similarly installed.  I 
run into the following error

  "I/O error: Bad file descriptor"

when I try to '#use somefile' several times (when camlp4 is turned on).

I can reproduce this weird behavior as follows:

          Objective Caml version 3.10.2
  
  # #use "topfind";;
  # #camlp4o;;
  # #use "foo.ml";;
  - : int = 1
  # #use "foo.ml";;
  - : int = 1
  # #use "foo.ml";;
  I/O error: Bad file descriptor


Does anyone else get this weird behavior?  Why would it fail on the later 
times?  Was a file descriptor left unclosed?  Is this a bug?

Peng
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Re: [Caml-list] strange behavior with camlp4 and #use

[Hezekiah M. Carty]

On Tue, Sep 16, 2008 at 5:31 PM, Peng Zang <peng.zang@gmail.com> wrote:
> Hi,
>
> I am running 3.10.2 installed from GODI.  Findlib is similarly installed.  I
> run into the following error
>
>  "I/O error: Bad file descriptor"
>
> when I try to '#use somefile' several times (when camlp4 is turned on).

Yes, this is an unfortunate error which came along with the new camlp4
in OCaml 3.10.x.  The error is reported in the OCaml bug tracker here
(please pardon the strange grammar in the bug title - I don't know
what I was thinking when I wrote it):

http://caml.inria.fr/mantis/view.php?id=4495

This bug may be related as well:

http://caml.inria.fr/mantis/view.php?id=4593

It is marked as "assigned", so hopefully it will be fixed by the time
OCaml 3.11 is released.  As it is, the bug makes using both camlp4 and
#use in the REPL prohibitive.

Hez

-- 
Hezekiah M. Carty
Graduate Research Assistant
University of Maryland
Department of Atmospheric and Oceanic Science

Re: [Caml-list] strange behavior with camlp4 and #use

[Peng Zang]

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On Tuesday 16 September 2008 05:58:17 pm Hezekiah M. Carty wrote:
> >  "I/O error: Bad file descriptor"
> >
> > when I try to '#use somefile' several times (when camlp4 is turned on).
>
> Yes, this is an unfortunate error which came along with the new camlp4
> in OCaml 3.10.x.  The error is reported in the OCaml bug tracker here
> (please pardon the strange grammar in the bug title - I don't know
> what I was thinking when I wrote it):
>
> http://caml.inria.fr/mantis/view.php?id=4495
>
> This bug may be related as well:
>
> http://caml.inria.fr/mantis/view.php?id=4593
>
> It is marked as "assigned", so hopefully it will be fixed by the time
> OCaml 3.11 is released.  As it is, the bug makes using both camlp4 and
> #use in the REPL prohibitive.
>
> Hez

Ahhh!  Thank you much.  I hope it gets fixed in 3.11 too.

Peng
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