From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gentoo-dev+bounces-89191-garchives=archives.gentoo.org@lists.gentoo.org>
Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by finch.gentoo.org (Postfix) with ESMTPS id 942ED138334
	for <garchives@archives.gentoo.org>; Wed,  6 Nov 2019 22:46:31 +0000 (UTC)
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
	by pigeon.gentoo.org (Postfix) with SMTP id E276AE0919;
	Wed,  6 Nov 2019 22:46:27 +0000 (UTC)
Received: from smtp.gentoo.org (mail.gentoo.org [IPv6:2001:470:ea4a:1:5054:ff:fec7:86e4])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	by pigeon.gentoo.org (Postfix) with ESMTPS id 9A56BE090E
	for <gentoo-dev@lists.gentoo.org>; Wed,  6 Nov 2019 22:46:27 +0000 (UTC)
Received: from sf (tunnel547699-pt.tunnel.tserv1.lon2.ipv6.he.net [IPv6:2001:470:1f1c:3e6::2])
	(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
	(No client certificate requested)
	(Authenticated sender: slyfox)
	by smtp.gentoo.org (Postfix) with ESMTPSA id 45ABA34C993;
	Wed,  6 Nov 2019 22:46:26 +0000 (UTC)
Date: Wed, 6 Nov 2019 22:46:22 +0000
From: Sergei Trofimovich <slyfox@gentoo.org>
To: Mattias Nissler <mnissler@chromium.org>
Cc: gentoo-dev@lists.gentoo.org
Subject: Re: [gentoo-dev] Re: [PATCH] Fix tc-cpp-is-true to work with clang
Message-ID: <20191106224622.739f2a9f@sf>
In-Reply-To: <20191104201811.5a629cdd@sf>
References: <20191104101120.230510-1-mnissler@chromium.org>
	<20191104201811.5a629cdd@sf>
X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu)
Precedence: bulk
List-Post: <mailto:gentoo-dev@lists.gentoo.org>
List-Help: <mailto:gentoo-dev+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-dev+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-dev+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-dev.gentoo.org>
X-BeenThere: gentoo-dev@lists.gentoo.org
Reply-to: gentoo-dev@lists.gentoo.org
X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-Archives-Salt: 88f8b334-e546-4932-847c-051c5d91060f
X-Archives-Hash: 00a1d3325116c06fde7fdaac1fad995b

On Mon, 4 Nov 2019 20:18:11 +0000
Sergei Trofimovich <slyfox@gentoo.org> wrote:

> On Mon,  4 Nov 2019 10:11:20 +0000
> Mattias Nissler <mnissler@chromium.org> wrote:
> 
> > Clang's preprocessor likes to output a leading newline, which makes
> > the comparison always fail. GCC generates additional output with certain
> > flags (e.g. -ggdb3) as well. Hence, switch the test to trigger a
> > preprocessor error when the condition is not true and examine the exit
> > code.
> > 
> > Bug: https://bugs.gentoo.org/698912
> > 
> > Signed-off-by: Mattias Nissler <mnissler@chromium.org>
> > ---
> >  eclass/toolchain-funcs.eclass | 15 +++++++--------
> >  1 file changed, 7 insertions(+), 8 deletions(-)  
> 
> Looks good! I'll pull it in to ::gentoo in a few days.

Pushed to ::gentoo as:
    https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3ef6b33339da7bb04afd77e1bc5db011b02d658a
Also while at it added basic regression test:
    https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=8f02136721af40dd89a09101504750fb28f8142e

-- 

  Sergei