X-Recipient: archive-cygwin AT delorie DOT com
X-Original-To: cygwin AT cygwin DOT com
Delivered-To: cygwin AT cygwin DOT com
DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 13054395C036
Authentication-Results: sourceware.org;
 dmarc=none (p=none dis=none) header.from=towo.net
Authentication-Results: sourceware.org; spf=none smtp.mailfrom=towo AT towo DOT net
Subject: Re: cygwin1.dll > 3.1.4: Program execution fails if (WSL-)symlink
 exists and is present in PATH
To: cygwin AT cygwin DOT com
References: <3160909720eb427892eb38221a611953 AT frims060 DOT wamas DOT com>
 <66ac6d01-3ae9-5bd3-46a2-9a4e66647e45 AT cornell DOT edu>
 <20201202133905 DOT 6355182479af1f61971dc8a4 AT nifty DOT ne DOT jp>
 <20201202140557 DOT GQ303847 AT calimero DOT vinschen DOT de>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <7c12fbc2-2d45-5b36-d31b-1bc0edc7fb7d@towo.net>
Date: Wed, 2 Dec 2020 15:07:33 +0100
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.5.0
MIME-Version: 1.0
In-Reply-To: <20201202140557.GQ303847@calimero.vinschen.de>
X-Provags-ID: V03:K1:d3YyXjxjZVGV+5mV94Nub7UID4ebtNRbEoPRhTdQegmjU1rM/xs
 KahwF29dvFoosCMsnC7tcqCLQ2URV9cKvVLlqzL/BfTfsUrR/IPNWgIWQ5y5L1riLL0QGtY
 W3/AyqtjqIDleMQdf17OieuViXmltJzXX3TLWGFS7bTRICDptNNlUXmtYugMwiDggucQmQ2
 a9Wu9uPKaBwXlrpmDrlBg==
X-UI-Out-Filterresults: notjunk:1;V03:K0:jDzmg8HmWBI=:GT0EzuzfwsqWQNP6m9tVMD
 nuBq+kVbzrkWRXiv2/HeJf2hrp9llKLl81TohsUoCm0ETJCBi4yMet1VnQVt+tfk/qzas6QRh
 +V3AV2R8efiioi/QUgIF+OVgvwDmBKkDeS3ySf+w5TJ3BTdw/ona5aOLS2WAe0hM4zDqYwu1J
 PAGPRU60ohkm4WUEtzADFP8VCK6kKQfKCb7p7Ph7pNk70rYV5s3A/MMF8+DqoqlpbOmhA5yzv
 xWa+VDcmn45MYGBmhQZ5lS9QFqYg1HhHE/M3TJVhsQD+PkjNIKfV7Lbj444dIY4CYHcQQosza
 CpAyqNZq+I+EdFm8apbSyBDKLnkoGieNv80kZpGpXR7bIf/M3jzsbQxyfnmO32IPADkjLhkG0
 vpBz/Tdty3MFlD7+iXEgPIhsXfJg9zzlAm43HmiTB3ayJ2cqeriP4QDxRyZCKnzqD0LqjNZS6
 Buou/ZfOAw==
X-Spam-Status: No, score=3.5 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
 KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_ABUSEAT, RCVD_IN_DNSWL_NONE,
 RCVD_IN_MSPIKE_H2, RCVD_IN_SBL_CSS, SPF_HELO_NONE, SPF_NONE,
 TXREP autolearn=no autolearn_force=no version=3.4.2
X-Spam-Level: ***
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>
Content-Transfer-Encoding: 7bit
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Errors-To: cygwin-bounces AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces AT cygwin DOT com>



Am 02.12.2020 um 15:05 schrieb Corinna Vinschen:
> On Dec  2 13:39, Takashi Yano via Cygwin wrote:
>> On Tue, 1 Dec 2020 19:13:39 -0500
>> Ken Brown via Cygwin <cygwin AT cygwin DOT com> wrote:
>>> On 12/1/2020 4:24 AM, Mattl Mario wrote:
>>>> Hello,
>>>>
>>>> Since cygwin1.dll version 3.1.5, I observed the following behavior:
>>>> If a symbolic link is existing in the PATH environment, programs (external from Cygwin's system directory) using cygwin1.dll cannot be executed anymore.
>>>> Possibly, because the Cygwin-DLL isn't found anymore.
>>>>
>>>> Steps to reproduce:
>>>>
>>>> cd /
>>>> mkdir link_test
>>>> cp /usr/bin/sed.exe link_test
>>>> ln -s link_test test
>>>> export PATH=/test:/link_test:/usr/bin:/bin
>>>>
>>>> /link_test/sed cannot be executed
>>>> $ ldd /link_test/sed
>>>>           ntdll.dll => /cygdrive/c/WINDOWS/SYSTEM32/ntdll.dll (0x7ffffd960000)
>>>>           KERNEL32.DLL => /cygdrive/c/WINDOWS/System32/KERNEL32.DLL (0x7ffffd140000)
>>>>           KERNELBASE.dll => /cygdrive/c/WINDOWS/System32/KERNELBASE.dll (0x7ffffa8e0000)
>>>>           SYSFER.DLL => /cygdrive/c/WINDOWS/System32/SYSFER.DLL (0x550c0000)
>>>>
>>>> -> no cygwin- DLLs found
>>>> [...]
>>> I think this was fixed by commit 4b4fffe0f2390be6a5be27b6a3ceaa212a3724b2, but I
>>> don't have time to check carefully, and I'm going to be AFK for a few days
>>> starting tomorrow.
>> I can reproduce this issue with current git head even with
>> the commit 4b4fffe0f2390be6a5be27b6a3ceaa212a3724b2.
> Just looking into it.  It has something to do with missing to resolve
> a WSL symlinks to a Windows path, but I'm not sure yet where this occurs.
Actually I confirmed the issue too and I did not have to involve WSL, 
cygwin ln -s led to the behaviour.
--
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