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 v1.4.1 sourceware.org 70A393858C3A
Authentication-Results:	sourceware.org; dmarc=none (p=none dis=none)
	header.from=SystematicSw.ab.ca
Authentication-Results:	sourceware.org;
	spf=none smtp.mailfrom=systematicsw.ab.ca
X-Authority-Analysis:	v=2.4 cv=F+dEy4tN c=1 sm=1 tr=0 ts=61984778
	a=T+ovY1NZ+FAi/xYICV7Bgg==:117 a=T+ovY1NZ+FAi/xYICV7Bgg==:17
	a=IkcTkHD0fZMA:10 a=94nOnFI1EgyDtX4ev68A:9 a=QEXdDO2ut3YA:10
Message-ID:	<f25f1a2e-10a4-021e-3458-a094634c81fc@SystematicSw.ab.ca>
Date:	Fri, 19 Nov 2021 17:55:20 -0700
MIME-Version:	1.0
User-Agent:	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101
	Thunderbird/91.3.1
Subject:	Re: gdb symbolic link bug
To:	cygwin AT cygwin DOT com
References:	<7260a5386b514d2c83db0e6bfa431f5c AT v0001wsxm02 DOT flightsafety DOT com>
From:	Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
Organization:	Systematic Software
In-Reply-To:	<7260a5386b514d2c83db0e6bfa431f5c@v0001wsxm02.flightsafety.com>
X-CMAE-Envelope:	MS4xfApLqthma8+CC2fNjUrj0UgA9YeaxOh9pZbE4V/usrz2OVDXVPdOBClyzI42kxbSEYOiOaUX4qjnO9kXydMjPseBtRZZFkDA9fihJ2qQrQujRhehotWt
	aMVZB/YS3Xyqz/UnVEfStobo0p6Sct0xnhJazwMZkIBlvZE85XfkZ0bJdfPDs+RQDHCgiImCHps6GzeF2fpHxIU1k9qyKLuX7QM=
X-Spam-Status:	No, score=-1161.6 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS,
	KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_BARRACUDACENTRAL,
	RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,
	SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.4
X-Spam-Checker-Version:	SpamAssassin 3.4.4 (2020-01-24) 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+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

On 2021-11-19 08:08, Carter, Mark Andrew (Andy) via Cygwin wrote:
> Gdb will not run an executable when it is a symbolic link in the post
> Cygwin release 3.1.5 form. As seen below I am currently running 
> Cygwin 3.1.7. I have confirmed this is due to the change of the "ln 
> -s" implementation. Links created by Cygwin 2.8 and 3.1.0 work with 
> this gdb version, and links created with Cygwin 3.1.7 do not work 
> with gdb from Cygwin release 2.8. The following capture demonstrates
> the issue.  Note the workaround using readlink!
> $ uname -a
> CYGWIN_NT-10.0 P1163-8573-10 3.1.7(0.340/5/3) 2020-08-22 17:48 x86_64 Cygwin
> $ ls -l vital.exe
> lrwxrwxrwx 1 p00002737 Domain Users 18 Oct 19 06:59 vital.exe -> ../vital/vital.exe
> $ gdb vital.exe
> Reading symbols from vital.exe...done.
> (gdb) r
> Starting program: /home/p00002737/vital/tap/vital.exe
> Error creating process /home/p00002737/vital/tap/vital.exe, (error 1920).
> (gdb) quit
> $ gdb `readlink vital.exe`
> Reading symbols from ../vital/vital.exe...done.
> (gdb) r
> Starting program: /home/p00002737/vital/vital/vital.exe
> [New Thread 54032.0xc1e8]
> [New Thread 54032.0x10e4]
> [New Thread 54032.0xdee8]
> [New Thread 54032.0xcd20]
> [New Thread 54032.0x8e60]
> [New Thread 54032.0xc378]
> Thread 6 received signal SIGINT, Interrupt.
> [Switching to Thread 54032.0xc378]
> 0x00007fff3b4b5a03 in TlsGetValue () from /cygdrive/c/WINDOWS/System32/KERNELBASE.dll
> (gdb)

Cygwin is a rolling release system where only current releases are 
supported: Cygwin 3.3.2 and gdb 10.2.
Please update Cygwin and gdb to currently supported releases (and if 
possible rebuild the exe with current compilers and libraries) to see if 
the bug has been fixed or can still be reproduced.

-- 
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 -