X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:in-reply-to
	:references:mime-version:content-type:content-transfer-encoding;
	q=dns; s=default; b=UHL+9LBrWblXn9Q38HEhoIZyPtNQwmfkGef07Dp74ho
	CWSO8+c19X81ZIfcQcBR+rx7OPhJ5/Dyf9roGsAupoQNd+F9wjphiwNf5kM/fNMZ
	15ovZS6/yCwt1mYe0KRTQAE5dnQWCrTlhokT86OwqNM+RGgbawdJXMiVDPRpQSLY
	=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:date:from:to:subject:message-id:in-reply-to
	:references:mime-version:content-type:content-transfer-encoding;
	s=default; bh=kIeYMOjXltkUR9PwKgvoQV4FMAA=; b=VTNpFkuTyzwXd1v48
	dwZim+nrLw9M2La/6ioJVLcCRdqH2UoMSA1Y/34LgzhsMIjDT42w24RyS9ANCa3B
	HzMMdwQYKiIBAix0NPCUV4ufFpHMsH6AhYhUoaMfgaS50JpdNQAN9rLq6EqaS/lV
	w4mIDedyVZU2kyjs7Gdx9R/+Ck=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Spam-SWARE-Status:	No, score=-5.8 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 spammy=
X-HELO:	conssluserg-03.nifty.com
DKIM-Filter:	OpenDKIM Filter v2.10.3 conssluserg-03.nifty.com 01L17nE5029739
DKIM-Signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.ne.jp; s=dec2015msa; t=1582247270; bh=Q0slNQ9ekGt9R9soxKOvPt5pkmL+tG9PFD4FH23rKpE=; h=Date:From:To:Subject:In-Reply-To:References:From; b=fhj0D7mKkbDBLYzsMAOEmXHYAuKxIXBwCZL7bhEirl86F7+MJySgLLVZlYluPQro5 9sS3sqxzE5dPVTAp6zHVFWqoE70p7JAXeT3zihqXBaz9AphQ0TMG3pwX91kApQCq9r El2BJv7zbXlfByuC71k7AR0hUHRN7uxZFrW7eM0qRvgcz3oqOjhGDghMRcVtxXJRW9 NN0764s5KuD6jRdi9JeHUd69UzAkY0hCPBJhLmqyGoM6+BxrKde8hokB059gf9wysI ucNH4etDFqyxKd3lpVjejyfnW9lwxTjUKUz0SFMqQGj9eV/pglsLrM5RmdhzwhzzAX MDnOlfIcZ64Yw==
Date:	Fri, 21 Feb 2020 10:07:59 +0900
From:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
To:	cygwin AT cygwin DOT com
Subject:	Re: Pipes bug when spawning non-cygwin processes
Message-Id:	<20200221100759.6377af969a5f93217b488467@nifty.ne.jp>
In-Reply-To:	<20200221100121.44625484e94eef069f9ff3d8@nifty.ne.jp>
References:	<CAJZe6MDdZnE7BNZQWSHgaLo6sbx+9KVhG+wKfcruh_exPaZFLQ AT mail DOT gmail DOT com> <20200131072536 DOT da46ccf9cb52b1afdefa2a9a AT nifty DOT ne DOT jp> <CAJZe6MDszFgBvjhga_WCaTKACk3GWbP-jBGsZ3dd-4vMrQ93iQ AT mail DOT gmail DOT com> <CAJZe6MBh5mDzb8JDG+tG7wCq9RdU4CcxF01hNW7Qrj4JqjTZNg AT mail DOT gmail DOT com> <20200219044302 DOT bd24ffa7af1f159c67583600 AT nifty DOT ne DOT jp> <CAJZe6MBrUcn7Z=gJhwBh-x+pQ_KkaDvqSpRJn6zQgrg0m6zshw AT mail DOT gmail DOT com> <20200221100121 DOT 44625484e94eef069f9ff3d8 AT nifty DOT ne DOT jp>
Mime-Version:	1.0
X-IsSubscribed:	yes

On Fri, 21 Feb 2020 10:01:21 +0900
Takashi Yano wrote:
> On Thu, 20 Feb 2020 14:33:27 -0500
> Edward Lam wrote:
> > On Tue, Feb 18, 2020 at 2:43 PM Takashi Yano wrote:
> > > Could you please provide a simple test case?
> > 
> > Here you go:
> > 
> > // pipes.cpp
> > //
> > // Compile in a  Visual Studio x64 Native Tools Command Prompt:
> > //     cl pipes.cpp /link /subsystem:windows
> > //
> > // Run from inside a Cygwin shell, the produced pipes.exe
> > //
> > 
> > #include <stdio.h>
> > #include <windows.h>
> > 
> > INT WinMain(HINSTANCE, HINSTANCE, PSTR, INT)
> > {
> >     printf("This message used to show up in mintty cygwin v.2.11.2 shell!
> > or from ssh session\n");
> >     return 0;
> > }
> > // end of pipes.cpp
> 
> Thanks for the test case. Indeed, this works upto cygwin 3.0.7,
> and does not work in cygwin 3.1.0 or later.
> 
> However, I wonder what platform is your program for. This test
> case does not work also in native windows command prompt.
> Your test case works only in old cygwin pty.
> 
> If you want to make a program which works in cygwin pty, you
> can use cygwin g++ like:
> g++ -mwindows pipes.cpp -o pipes
> The binary built by above command works in cygwin pty, but does
> not work in cygwin console (cygwin in command prompt) even with
> cygwin 3.0.7.
> 
> If you want to make a program which works with windows console,
> you should change the code like:
> 
> INT WinMain(HINSTANCE, HINSTANCE, PSTR, INT)
> {
>     if (!AttachConsole(ATTACH_PARENT_PROCESS)) AllocConsole();
>     freopen("CONOUT$", "w", stdout);
>     printf("This message used to show up in mintty cygwin v.2.11.2 shell! or from ssh session\n");
>     return 0;
> }

Or just compile with:
cl pipes.cpp /link /subsystem:console

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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

- Raw text -