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 4F9573857C5E
Authentication-Results:	sourceware.org; dmarc=none (p=none dis=none)
	header.from=SystematicSw.ab.ca
Authentication-Results:	sourceware.org;
	spf=none smtp.mailfrom=brian DOT inglis AT systematicsw DOT ab DOT ca
X-Authority-Analysis:	v=2.4 cv=P9aEOgMu c=1 sm=1 tr=0 ts=5f9dd438
	a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17
	a=IkcTkHD0fZMA:10 a=94nOnFI1EgyDtX4ev68A:9 a=QEXdDO2ut3YA:10
Subject:	Re: Problems (and a workaround) with zlib and Windows Dev Channel
To:	cygwin AT cygwin DOT com
References:	<1970878832 DOT 218554 DOT 1604175571485 DOT ref AT mail DOT yahoo DOT com>
	<1970878832 DOT 218554 DOT 1604175571485 AT mail DOT yahoo DOT com>
From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Autocrypt:	addr=Brian DOT Inglis AT SystematicSw DOT ab DOT ca; prefer-encrypt=mutual;
	keydata=
	mDMEXopx8xYJKwYBBAHaRw8BAQdAnCK0qv/xwUCCZQoA9BHRYpstERrspfT0NkUWQVuoePa0
	LkJyaWFuIEluZ2xpcyA8QnJpYW4uSW5nbGlzQFN5c3RlbWF0aWNTdy5hYi5jYT6IlgQTFggA
	PhYhBMM5/lbU970GBS2bZB62lxu92I8YBQJeinHzAhsDBQkJZgGABQsJCAcCBhUKCQgLAgQW
	AgMBAh4BAheAAAoJEB62lxu92I8Y0ioBAI8xrggNxziAVmr+Xm6nnyjoujMqWcq3oEhlYGAO
	WacZAQDFtdDx2koSVSoOmfaOyRTbIWSf9/Cjai29060fsmdsDLg4BF6KcfMSCisGAQQBl1UB
	BQEBB0Awv8kHI2PaEgViDqzbnoe8B9KMHoBZLS92HdC7ZPh8HQMBCAeIfgQYFggAJhYhBMM5
	/lbU970GBS2bZB62lxu92I8YBQJeinHzAhsMBQkJZgGAAAoJEB62lxu92I8YZwUBAJw/74rF
	IyaSsGI7ewCdCy88Lce/kdwX7zGwid+f8NZ3AQC/ezTFFi5obXnyMxZJN464nPXiggtT9gN5
	RSyTY8X+AQ==
Organization:	Systematic Software
Message-ID:	<f4cffcb7-34cd-06c0-9f21-91ba9d28329f@SystematicSw.ab.ca>
Date:	Sat, 31 Oct 2020 15:16:39 -0600
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101
	Thunderbird/68.12.1
MIME-Version:	1.0
In-Reply-To:	<1970878832.218554.1604175571485@mail.yahoo.com>
X-CMAE-Envelope:	MS4xfHQA9rZ8KIxpqIek+9EWW9gxG06Oq7SYOANPqe1niw0btM/PDy3x9FakRHBhRKYouQ/mmmb9eQTHJ4dgoB/SzmTl9RfEXhArPNabY7A49QceBwz9HXxB
	Cm+uyXIlpkKfK8M3u9CuU4XfCoAAFiE1mygE5uOlhyDXv/Pvz51sLk3eUyoXtd0u1NPInLDUKPQDCYaK+sYjw/XkMFf7ez2CbslPu6jeKkYpEzHjvbPGD4R4
X-Spam-Status:	No, score=-6.3 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
	KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE,
	SPF_NONE, 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
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>
Reply-To:	cygwin AT cygwin DOT com
Errors-To:	cygwin-bounces AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces AT cygwin DOT com>

On 2020-10-31 14:19, Teemu via Cygwin wrote:
> I noticed that some programs that depend on zlib stopped working and started creating stackdumps with Windows Dev Channel build 20246.1. I could not get gdb working with zlib but I figured a workaround: I recompiled zlib with cygport using the latest gcc (10.2.0) and copied the dll over the old one. That did fix the problem.
> Regards,Teemu

Hi Teemu,

Could this have been a BLODA caused by your AV package e.g. Windows Defender?
Some utilities e.g. Tortoise <VCS> also install DLL intercepts that can break
Cygwin, so you have to drop them from Cygwin PATH.

Do you happen to know the zlib version you were running?
You can check under your local package directory:

$ ls -t $PACKAGE/x86*/release/zlib/zlib0/
zlib0-1.2.11-1.tar.xz  zlib0-1.2.8-3.tar.xz  zlib0-1.2.8-1.tar.bz2
zlib0-1.2.7-1.tar.bz2  zlib0-1.2.5-1.tar.bz2

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
[Data in binary units and prefixes, physical quantities in SI.]
--
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

- Raw text -