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From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: segfault on 32bit cygwin snapshot
Date: Thu, 4 Mar 2021 16:54:39 +0100	[thread overview]
Message-ID: <YEECv6bGundDfBbI@calimero.vinschen.de> (raw)
In-Reply-To: <b7338aaa-c1e1-1816-35f8-666c2f6ac618@cornell.edu>

On Mar  4 10:17, Ken Brown via Cygwin wrote:
> On 3/4/2021 6:50 AM, Takashi Yano via Cygwin wrote:
> > On Thu, 4 Mar 2021 12:11:11 +0100
> > marco atzeri wrote:
> > > I have no problem to patch Python to solve the issue,
> > > but I have not seen evidence of the dlsym mechanism .
> > > But of course I an NOT and expert in this field.
> > > 
> > > If someone looking to the code can give me some hints,
> > > I will appreciate
> > 
> > I am also not sure where the dlsym() is used in python.
> > At least, os.uname() works in python 3.8.7 and 2.7.18 in my
> > environment even without that snippet. It seems that os.uname()
> > does not use dlsym(). Do I overlook something?
> 
> This all started because Mark reported a problem building python 3.8.3:
> 
>   https://cygwin.com/pipermail/cygwin-apps/2020-December/040765.html
>   https://cygwin.com/pipermail/cygwin-developers/2020-December/012019.html
> 
> It's strange that Marco never bumped into the problem.

Right.  I was wondering the same when I read Marco's reply.  I thought
this is something in old python versions, but my testing never involved
python.  I just used a simple uname implementation calling uname via
dlopen/dlsym.

Either way, the problem persists.  Newly built executables requesting
uname via dlsym should certainly get the new implementation.


Corinna

  reply	other threads:[~2021-03-04 15:54 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-20 21:01 Marco Atzeri
2021-02-20 22:29 ` Takashi Yano
2021-02-28 18:48   ` Marco Atzeri
2021-03-01  0:55     ` Takashi Yano
2021-03-01  8:41       ` Takashi Yano
2021-03-01 11:26         ` Takashi Yano
2021-03-01 12:17           ` marco atzeri
2021-03-01 12:25       ` Takashi Yano
2021-03-02 11:03         ` Takashi Yano
2021-03-02 15:48           ` Corinna Vinschen
2021-03-03  9:56             ` Takashi Yano
2021-03-03 11:00               ` Corinna Vinschen
2021-03-04  9:05                 ` Mark Geisert
2021-03-04 16:11                   ` Corinna Vinschen
2021-03-05  9:18                     ` Mark Geisert
2021-03-05 14:37                       ` Corinna Vinschen
2021-03-04  9:05                 ` Takashi Yano
2021-03-04 11:11                   ` marco atzeri
2021-03-04 11:50                     ` Takashi Yano
2021-03-04 15:17                       ` Ken Brown
2021-03-04 15:54                         ` Corinna Vinschen [this message]
2021-03-04 20:17                         ` Marco Atzeri
2021-03-05  8:09                           ` Marco Atzeri
2021-03-05  9:11                             ` Mark Geisert
2021-03-05 14:42                               ` Corinna Vinschen
2021-03-05 16:30                                 ` Marco Atzeri
2021-03-06  1:45                                   ` Takashi Yano
2021-03-06 17:16                                     ` Ken Brown
2021-03-06 21:38                                       ` Mark Geisert
2021-03-05 22:55                                 ` Mark Geisert
2021-03-08 11:07                                   ` Mark Geisert
2021-03-08 14:01                                     ` Corinna Vinschen
2021-03-04 15:52                   ` Corinna Vinschen

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