X-Recipient: archive-cygwin AT delorie DOT com
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org B5713384404C
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com;
	s=default; t=1614931752;
	bh=0IUFZUj4GB3kQLpDb+N6p/9bjRNTxvb0FtlRk8a117w=;
	h=Subject:To:References:Date:In-Reply-To:List-Id:List-Unsubscribe:
	 List-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:
	 From;
	b=Nb/BywIacBvWjdJL+Wpxn1/zSlAJ1Noir5EnGPZ9b/T9fyqHlbryEbGJQiIhsLMDc
	 nGTDrCBJFNW7sFe/o5d4FZsQsSbIwaB1KoLjHZ4oDm4SFSq+Z0/dvvYUbUzNBN9NmF
	 ocRMXkqt2h24XZffV38RHWoTko/6/y8x/aGcY6DM=
X-Original-To: cygwin AT cygwin DOT com
Delivered-To: cygwin AT cygwin DOT com
DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 5576F3851C39
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:subject:from:to:references:message-id:date
 :user-agent:mime-version:in-reply-to:content-language
 :content-transfer-encoding;
 bh=cpdSVLW1YDrYJz2V/ki2EhT3MQ0+uLeZ/7FazEJCTZw=;
 b=CFNbuaJAd4Si79joOGKSRGWCYzw3zfXC+7iI1vQTjd0aBQaZiiP+2cTK+x7GR/Hzri
 jkJRP4zoIctK0GwlDOUCNE2Uu8eZXV8VfkAHE1lfmSIwK011gGZcjqGw9eKsgBKEhCPr
 afMxAvCcEtz/4G6K+iAO8Xc0jauSDRsGkvdQObtAriGZM7j1xlzqSGBxJCjdoetmHj5j
 3NXREfSQA6lcPySQefzGR6M0wEgA/GcGQ6GDO6NauFfvqb+7k0YrsMSVQANEgBhDWiBO
 S7xrNeoTS0LkBLp/r+mnqd94HUziLBCATWPFf/4nBmPupKh6U4PS1/GTy91+NmIdPNp/
 XItg==
X-Gm-Message-State: AOAM533HJQNAVa/G7U+5pqvCdXfOYIUGlKHBLgwmdCifGppASKYnpF9u
 EoNHhF2zyF+qjfjdOepd8o1YRYjE7JUKpA==
X-Google-Smtp-Source: ABdhPJwZ06MHgS7kIkZ3kqbJRJi5m4vIk+czr2ZNndH5FD4fM1aTjWaIHeTL/lPdcb0bb/YwWrsDCQ==
X-Received: by 2002:a17:906:5689:: with SMTP id
 am9mr1189696ejc.298.1614931748989; 
 Fri, 05 Mar 2021 00:09:08 -0800 (PST)
Subject: Re: segfault on 32bit cygwin snapshot
To: cygwin AT cygwin DOT com
References: <9d7b9dc2-cb92-498b-7655-e9c618114c87 AT gmail DOT com>
 <20210221072954 DOT db2dcbd523ed366e4dfcb0d0 AT nifty DOT ne DOT jp>
 <7480c946-8e02-aba2-c06f-6b39f630699f AT gmail DOT com>
 <20210301095546 DOT dce31a474bd0cec2c3518f87 AT nifty DOT ne DOT jp>
 <20210301212542 DOT 8b1749f92af62c01b008f25a AT nifty DOT ne DOT jp>
 <20210302200308 DOT 62db4fe01f78fb35a538784f AT nifty DOT ne DOT jp>
 <YD5eXbxBWbUUSwcM AT calimero DOT vinschen DOT de>
 <20210303185621 DOT b048287526901af6a4c8200a AT nifty DOT ne DOT jp>
 <YD9sSea32T7GqlJr AT calimero DOT vinschen DOT de>
 <20210304180534 DOT 7c3825e6ee989a2bf62f0652 AT nifty DOT ne DOT jp>
 <CAB8Xom-HwxH9LnbLL8cAoXh60tjU592T6XFEDJzvhv28Do-UsQ AT mail DOT gmail DOT com>
 <20210304205000 DOT 4ac34afe1a8b767ea2986291 AT nifty DOT ne DOT jp>
 <b7338aaa-c1e1-1816-35f8-666c2f6ac618 AT cornell DOT edu>
 <98df59b3-a139-03d2-c8c5-31ff4f8448ab AT gmail DOT com>
Message-ID: <625cb9d2-b6cc-3ada-eea9-44a5e73da17c@gmail.com>
Date: Fri, 5 Mar 2021 09:09:07 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.8.0
MIME-Version: 1.0
In-Reply-To: <98df59b3-a139-03d2-c8c5-31ff4f8448ab@gmail.com>
Content-Language: it
X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00, DKIM_SIGNED,
 DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, NICE_REPLY_A,
 RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS,
 TXREP autolearn=ham autolearn_force=no version=3.4.2
X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on
 server2.sourceware.org
X-BeenThere: cygwin AT cygwin DOT com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe: <https://cygwin.com/mailman/options/cygwin>,
 <mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive: <https://cygwin.com/pipermail/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe: <https://cygwin.com/mailman/listinfo/cygwin>,
 <mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
From: Marco Atzeri via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Errors-To: cygwin-bounces AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces AT cygwin DOT com>
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from base64 to 8bit by delorie.com id 12589GNf029387

On 04.03.2021 21:17, Marco Atzeri wrote:
> On 04.03.2021 16:17, 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.
>>
>> Ken
> 
> I never built python using cygwin snapshots as Mark was trying to do,
> all my builds were using 3.1.7.
> 
> Let me set a separate enviroment for building on latest snapshot

I can not replicate with latest snapshot

$ uname -svr
CYGWIN_NT-10.0-WOW 3.2.0s(0.340/5/3) 2021-03-01 15:42

nor in 64bit when building 3.8.8

For what I see the DLL is always using a proper import
from cygwin1.dll

$ objdump -x libpython3.8.dll |grep uname
         2b9de0   2170  uname
         2b9de8   2171  uname_x

the only thing not standard on my build system is a case sensitive
filesystem and mount


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