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 5782F3857802
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=2.3 cv=OubUNx3t c=1 sm=1 tr=0
 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17
 a=IkcTkHD0fZMA:10 a=_ctWjzdLAAAA:8 a=JZeu4sPTHj9YQVegERsA:9 a=QEXdDO2ut3YA:10
 a=WoGCsytTnHKj16XvecxK:22
Subject: Re: cygwin qsort erratic
To: cygwin AT cygwin DOT com
References: <CAHybJinLYpcviSFiJ=V-EZqoatEzjFfr9DOUzxzmofUmtwMS+w AT mail DOT gmail 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: <c9792fdc-aedc-6934-e11f-732f841b533b@SystematicSw.ab.ca>
Date: Sun, 30 Aug 2020 20:54:58 -0600
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101
 Thunderbird/68.12.0
MIME-Version: 1.0
In-Reply-To: <CAHybJinLYpcviSFiJ=V-EZqoatEzjFfr9DOUzxzmofUmtwMS+w@mail.gmail.com>
Content-Language: en-CA
X-CMAE-Envelope: MS4wfHEVIqC5z7o+rmSj6L6T8cT35smT7KZRM0pDE4tSXneQDm5SHbjta2EigSLUL828fr6TIsFqIY8pZbhaGw5TdwF1ENMcgsQQJ5uGYr4XIHeqWonQIlqH
 qEmAGmonLT+hTE3EZu7zL/yy8vvKYyLnOrKIjX0z1HfwsmtmFmG8jw9zb/WhN7WVnLXpOEWK7PcA2w==
X-Spam-Status: No, score=-7.3 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
 KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,
 SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no 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>
Reply-To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: cygwin-bounces AT cygwin DOT com
Sender: "Cygwin" <cygwin-bounces AT cygwin DOT com>

On 2020-08-30 15:27, Kurt-Karen Carlson-Lougheed via Cygwin wrote:
> In a small percentage of qsort requests, the results are erratic. Running
> the same code under Linux (RHEL7) does NOT have this problem. I updated my
> cygwin to current and the problem persists. I copied the latest netbsd.org
> qsort.c and compiled into my code, the problem is resolved with that
> version of qsort.
> 
> In researching this issue, there was a post to this list 2015-01-11
> reporting a
> 'damaged' qsort. This may still be the same issue. The netbsd version I am
> now using is dated 2017-05-19.
> 
> My code experiencing this is SourceForge uac19, I'll be posting the
> corrected version (v3.2) with the netbsd qsort tomorrow after completing
> validation tests. I would ultimately like to see cygwin's qsort fixed.

As qsort depends on the array object data types and comparison functions, please
post a Simple Test Case, showing at least those types and function(s), and the
faulty output results.

-- 
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 IEC 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