X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=wT3OFRVMp+clYt8G
	f76wjEeEkcJ0GZyWDRBN5Mzwi+jWRVUDeReMQyXDbARMyIotgHmMXDjKj9Hu65yO
	0JQ4Ml1o8A4PvnC4xAaIDps9FuWvbarAJhyMM47UM6YU4pZetHSbDzrkRqVawLJb
	kFAaHshhNjy7912EgIsv1541pCM=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=xxGT7n+Qt0Pch435GA1QZE
	H28ZI=; b=MUjQihm6gi1mzBjaIh2aSJv0P6bh9kjz6A1cjKgBO7QeDAzhF6RiE6
	elXHTrYkdv8QJl3guPH5XavvKZYEkfwv8K04tRcXN3UWDNVl53NgqDRubW9w4VOs
	5pfnX7nr+UVX/ItMswJZ36iRvs7f9p/PxS/zDc1FDMNQxjcufU6MA=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	=?ISO-8859-1?Q?No, score=2.1 required=5.0 tests=BAYES_00,BODY_8BITS,GARBLED_BODY,RCVD_IN_DNSWL_NONE autolearn=no version=3.3.2 spammy==d0=bf=d0=b8=d1, =d0=b5=d1?=
X-HELO:	mail-wm0-f41.google.com
X-Google-DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=iIBfm1k152pp7KJOtnnpMWtV7tsoMeJuH2W20RiaClE=; b=EPA7y+AiLdjoUr7Lw8a89uhfm7tlr5/obCng/X4ws8v3ZNvCMQ3zwCVFZ/Ka9UAW1F NW7jiMteOj/uuFuSJ8Xr+ulyidp88v1m8EDpdrR831ELWkzReDGpUI0kiOnv+hfPzFSV e1S7aEt/IPR0+Rra4E5OEsD8FKgTCcU/YKL6WD6fSOf3TKTVblvUMinlsWp1Wr9jvzKL rygWgvSxsyeha+zLCvT8vQ+fIRWNorcjXvzr+Mfk3alt/fgAuKi12jhrsbs+AYKYm8Me C0zdg2h87Vl/d82u8kIq2U7Q088MkBd1lzt33z+ZEd76U/WCjyFh0eS02R39/mZlijzS pOCA==
X-Gm-Message-State:	AFeK/H3afCSX36PJ0Zjqp4g7i9HPe4dTjRqp0P8tmDwR3cv9bH8NuQ0B4XHNpQyi+gywog==
X-Received:	by 10.28.145.130 with SMTP id t124mr6555650wmd.39.1490172276943; Wed, 22 Mar 2017 01:44:36 -0700 (PDT)
Subject:	Re: dlclose() vs fork()
To:	cygwin AT cygwin DOT com
References:	<1504e7ff-dd60-f55f-d00a-0a1ae5d5e034 AT asokolov DOT org> <20170321134200 DOT GA18800 AT calimero DOT vinschen DOT de>
From:	Alexey Sokolov <alexey+cygwin AT asokolov DOT org>
Message-ID:	<7d43957e-bd64-fdec-a7ef-15f66c29b9bb@asokolov.org>
Date:	Wed, 22 Mar 2017 08:44:35 +0000
User-Agent:	Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0
MIME-Version:	1.0
In-Reply-To:	<20170321134200.GA18800@calimero.vinschen.de>
X-IsSubscribed:	yes
Note-from-DJ:	This may be spam

Thanks Corinna for the quick fix,
The user confirmed it's working now with the snapshot.

21.03.2017 13:42, Corinna Vinschen пишет:
> On Mar 21 09:03, Alexey Sokolov wrote:
>> Hello,
>> If the same DLL is dlopen()ed several times, dlclose() will actually
>> unload the DLL only after the same number of calls to dlclose().
>>
>> This works fine in cygwin, until we add fork().
>>
>> It looks like in the child process the counters of inherited DLLs are
>> set to 1, so the first dlclose() unloads it, causing segfault for
>> subsequent access to the unloaded code.
>> https://github.com/znc/znc/issues/1385#issuecomment-288014319 has a
>> working minimal example of this behavior.
>
> dlopen/dlclose reference counting was broken.  I applied a fix and
> uploaded new dev snapshots to https://cygwin.com/snapshots/
>
> I'm just building a 2.8.0-0.2 test release as well.
>
>
> Please test.
>
>
> Thanks,
> Corinna
>


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -