Re: lib/53805: dlclose(3) does not interact correctly with atexit(3) callbacks

[Kamil Rytarowski <n54%gmx.com@localhost>]

The following reply was made to PR lib/53805; it has been noted by GNATS.

From: Kamil Rytarowski <n54%gmx.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: lib/53805: dlclose(3) does not interact correctly with atexit(3)
 callbacks
Date: Thu, 20 Dec 2018 19:36:44 +0100

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 From: Kamil Rytarowski <n54%gmx.com@localhost>
 To: gnats-bugs%NetBSD.org@localhost
 Message-ID: <2fe02234-de92-6729-5d1b-57402b394f1a%gmx.com@localhost>
 Subject: Re: lib/53805: dlclose(3) does not interact correctly with atexit(3)
  callbacks
 References: <pr-lib-53805%gnats.netbsd.org@localhost>
  <20181220170732.7C3557A1ED%mollari.NetBSD.org@localhost>
  <20181220171000.738957A1ED%mollari.NetBSD.org@localhost>
  <20181220175724.GB20295%britannica.bec.de@localhost>
 In-Reply-To: <20181220175724.GB20295%britannica.bec.de@localhost>
 
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 On 20.12.2018 18:57, Joerg Sonnenberger wrote:
 > On Thu, Dec 20, 2018 at 05:10:00PM +0000, n54%gmx.com@localhost wrote:
 >>> Description:
 >> atexit(3) callback registered in DSO misbehaves if DSO is dlclose(3)d.=
 
 >>
 >>  - atexit(3) callback registered in DSO is not called upon dlclose(3),=
 
 >>  - atexit(3) callback registered in DSO is called on program terminati=
 on, even if dlclose(3)d was called and this causes crash.
 >=20
 > This is not a bug. Seriously, do not use atexit(3) from a dynamically
 > opened DSO.
 >=20
 
 What's the rationale that this is not allowed so I can prompt upstream
 to change it?
 
 
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