[debbugs-tracker] bug#24357: closed (pure guile program leaks memory)

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Your message dated Wed, 01 Mar 2017 10:06:50 +0100
with message-id <address@hidden>
and subject line Re: bug#24357: pure guile program leaks memory
has caused the debbugs.gnu.org bug report #24357,
regarding pure guile program leaks memory
to be marked as done.

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24357: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24357
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--- Begin Message --- Subject: pure guile program leaks memory Date: Sat, 03 Sep 2016 09:20:36 +0200 User-agent: Roundcube Webmail/1.1.2

Using guile 2.1.3, I have a program that:

- reads urls from a text file
- download the urls using curl command via popen
- output the result to stdout

Also, it relies on n-for-each-par-map for ice-9 threads.

IMO, the most suspicious is the definition of the `curl' proc:


  (define (curl url)
     (let* ((port (open-input-pipe (format #f "curl -is \"~a\"" url)))
            (response (read-string port)))
       (close-pipe port)
       response))


I fail to see how this can leak.

To reproduce the bug you need a giant list of preferably different urls.
Such a list is available at http://hyperdev.fr/data/hn/hn.urls.txt.xz

You can run the test program with the following command:

   cat hn.urls.txt | guile urls-step00-fetch.scm > /dev/null

This is not the only program I tried on guile-2.1.3 that leaks but
it's the easiest to reproduce.

I will try to reproduce the bug on 2.0.12.

urls-step00-fetch.scm
Description: Text document

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#24357: pure guile program leaks memory
>
>
>
>
> Date: 
>
> Wed, 01 Mar 2017 10:06:50 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)
>
>
>
>
> On Mon 12 Sep 2016 19:47, Amirouche Boubekki <address@hidden> writes:
>
> > On 2016-09-03 20:49, Amirouche Boubekki wrote:
> >> On 2016-09-03 11:54, Andy Wingo wrote:
> >>> On Sat 03 Sep 2016 09:20, Amirouche Boubekki
> >>> <address@hidden> writes:
> >>>
> >>>> Using guile 2.1.3, I have a program that:
> >>>>
> >>>> - reads urls from a text file
> >>>> - download the urls using curl command via popen
> >>>> - output the result to stdout
> >>>>
> >>>> Also, it relies on n-for-each-par-map for ice-9 threads.
> >>>
> >>> Can you reduce it please?  For example, remove the use of threads.
> >>>
> >>
> >> Ok. I removed threads and only download the same url over and over
> >> again.
> >>
> >> Here is the error I get on stdout:
> >>
> >>    (23) Failed writing body
> >
> > Internet says this a curl issue. Please close this bug.
>
> No problem.  For reference, in the future just add "-done" after the bug
> number in the mail, as I did above.  Cheers :)
>
> Andy
>
>
> --- End Message ---