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From: Eli Zaretskii <eliz@gnu.org>
To: "Mattias Engdegård" <mattiase@acm.org>
Cc: fernandodemorais.jf@gmail.com, jp@neverwas.me, bandali@gnu.org,
	54458@debbugs.gnu.org
Subject: bug#54458: 27.2; erc-dcc-get: Re-entering top level after C stack overflow
Date: Tue, 29 Mar 2022 19:45:28 +0300	[thread overview]
Message-ID: <83k0cc907r.fsf@gnu.org> (raw)
In-Reply-To: <4DA2DB05-D902-42DF-860D-87617FBB74C8@acm.org> (message from Mattias Engdegård on Tue, 29 Mar 2022 17:49:05 +0200)

> From: Mattias Engdegård <mattiase@acm.org>
> Date: Tue, 29 Mar 2022 17:49:05 +0200
> Cc: Eli Zaretskii <eliz@gnu.org>, fernandodemorais.jf@gmail.com,
>         54458@debbugs.gnu.org, bandali@gnu.org
> 
> Although it seems reasonable to require that filter functions abstain from sending more data to the process, there may be another way: preventing re-entering process-send calls from recursing further.
> 
> Attached is a proof of concept: if process-send calls are invoked when another activation already exists, just enqueue the data and let the previous activation deal with the actual transmission. That nips the recursion in the buds.
> 
> The principle seems sound but if anyone can think of problems with the approach, please do tell.

I think this should be conditioned on the same process being used, no?
Doing this for two different processes doesn't cause problems, does
it?  If it does, can you describe in more detail how the recursion
happens?

Thanks.





  reply	other threads:[~2022-03-29 16:45 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-18 22:59 bug#54458: 27.2; erc-dcc-get: Re-entering top level after C stack overflow Fernando de Morais
2022-03-21 14:09 ` J.P.
2022-03-22 13:50   ` Fernando de Morais
2022-03-22 14:36     ` Eli Zaretskii
     [not found]       ` <87tubj1eq4.fsf@gmail.com>
2022-03-27 17:56         ` Eli Zaretskii
2022-03-27 22:09           ` Fernando de Morais
2022-03-27 20:54 ` Mattias Engdegård
2022-03-28  9:23   ` Mattias Engdegård
2022-03-28 11:14     ` Eli Zaretskii
2022-03-28 12:08       ` J.P.
2022-03-29 15:49         ` Mattias Engdegård
2022-03-29 16:45           ` Eli Zaretskii [this message]
2022-03-29 17:47             ` Mattias Engdegård
2022-03-29 19:44               ` J.P.
2022-03-30  4:02                 ` J.P.
     [not found]                 ` <87mth8rst7.fsf@neverwas.me>
2022-03-30 15:28                   ` Mattias Engdegård
2022-03-31 19:18                     ` J.P.
     [not found]                     ` <87sfqygccz.fsf@neverwas.me>
2022-04-03 17:20                       ` Fernando de Morais
2022-04-03 19:46                         ` J.P.
     [not found]                         ` <87wng67xxd.fsf@neverwas.me>
2022-04-10 21:31                           ` J.P.
     [not found]                           ` <875yng39sa.fsf@neverwas.me>
2022-04-11  3:17                             ` J.P.
     [not found]                             ` <87sfqkz4ts.fsf@neverwas.me>
2022-04-25  0:59                               ` Fernando de Morais
     [not found]                               ` <87ilqyrn9s.fsf@gmail.com>
2022-04-25 12:08                                 ` J.P.
     [not found]                                 ` <878rrtz7or.fsf@neverwas.me>
2022-04-29 14:51                                   ` Fernando de Morais
     [not found]                                   ` <87r15guen2.fsf@gmail.com>
2022-04-30 13:39                                     ` J.P.
     [not found]                                     ` <87ilqqy9km.fsf@neverwas.me>
2022-05-04 13:03                                       ` Fernando de Morais
     [not found]                                       ` <87pmkth2lr.fsf@gmail.com>
2022-05-06 13:06                                         ` J.P.
     [not found]                                         ` <874k22zu7s.fsf@neverwas.me>
2022-05-08  1:16                                           ` Fernando de Morais
     [not found]                                           ` <87sfpk4ydj.fsf@gmail.com>
2022-05-11 14:29                                             ` J.P.
     [not found]                                             ` <87ee10xhw3.fsf@neverwas.me>
2022-05-23  1:22                                               ` J.P.
2022-04-01  6:32                   ` J.P.

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