From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-200295-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 119836 invoked by alias); 27 Sep 2019 00:17:19 -0000
Mailing-List: contact gcc-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc/>
List-Post: <mailto:gcc@gcc.gnu.org>
List-Help: <http://gcc.gnu.org/ml/>
Sender: gcc-owner@gcc.gnu.org
Received: (qmail 119823 invoked by uid 89); 27 Sep 2019 00:17:19 -0000
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=-3.1 required=5.0 tests=AWL,BAYES_00,KAM_NUMSUBJECT,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=no version=3.3.1 spammy=H*r:906, H*r:a17, HX-HELO:sk:mail-ed, H*r:sk:mail-ed
X-HELO: mail-ed1-f47.google.com
Received: from mail-ed1-f47.google.com (HELO mail-ed1-f47.google.com) (209.85.208.47) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 27 Sep 2019 00:17:18 +0000
Received: by mail-ed1-f47.google.com with SMTP id r4so814858edy.4        for <gcc@gcc.gnu.org>; Thu, 26 Sep 2019 17:17:17 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;        d=gwmail-gwu-edu.20150623.gappssmtp.com; s=20150623;        h=mime-version:in-reply-to:references:from:date:message-id:subject:to         :cc;        bh=lyJJ32zHJVBhgoKByfvRQ9SUuZmyjLZrshf2gDJJOc4=;        b=CDdY+N1d/nwfmW1tcg7Y3DcSRycbIV340V0rpVbAqDfE1ftPQpkzG1H1fXePmBznLc         omno/SPgz+XtlDILYkJWXyIwuivzwQ/DVY/JDhG6ts+HhWvm7kFQ59PPWFysXNXSzgU3         0Ks9fa0rMh1NIUSK3HN6BuqJiyzipdjaTqBxejCZumbW0XS7JHa2Dp5AeBZUfusD3iUF         DY4ab/J5z6KlxBRWz8JD/hFLKuChAq7I4HkapMBAtm0G5aFNNj4BC7+/fu9kRHnCwTI1         zuNgfWldARYOwzfdU8frvLN5CMgiLM1ToyMmBfYugFXKmhQ0ZJ21l2zi21mUd+lzDtzN         gRVA==
MIME-Version: 1.0
Received: by 2002:a17:906:b78f:0:0:0:0 with HTTP; Thu, 26 Sep 2019 17:17:14 -0700 (PDT)
In-Reply-To: <5dfb5453-8dee-5e12-c24d-0e1e81f40501@gmail.com>
References: <5dfb5453-8dee-5e12-c24d-0e1e81f40501@gmail.com>
From: Eric Gallager <egall@gwmail.gwu.edu>
Date: Fri, 27 Sep 2019 00:17:00 -0000
Message-ID: <CAMfHzOtAa3Ufdo+NX9X0t7TfsoMPodRCx55p2R2cjimGK3Dsiw@mail.gmail.com>
Subject: Re: Moving to C++11
To: Nicholas Krause <xerofoify@gmail.com>
Cc: gcc Mailing List <gcc@gcc.gnu.org>
Content-Type: text/plain; charset="UTF-8"
X-IsSubscribed: yes
X-SW-Source: 2019-09/txt/msg00247.txt.bz2

On 9/26/19, Nicholas Krause <xerofoify@gmail.com> wrote:
> Greetings,
>
> I asked about moving to C/C++ 11 as it would make it easier to
>
> allow multithreading support due to having a memory model
>
> alongside other features. Jason Merill mentioned due to it
>
> being so common it may be a good  time to.
>
> Moving to git seems to be universally agree on so I'm opening the
> discussion
>
> for the same as related to C/C++11 migration and if possible opening
>
> a TODO similar to git if decided on.
>
> Please post your comments or ideas about the migration in response to this
>
> email,
>
> Nick
>
>

A good first step would be to flip the switch from -Wno-narrowing to
-Wnarrowing in the warning flags GCC uses when building, as C++11 has
stricter rules about narrowing conversions. This would be useful even
if we don't end up going to C++11 yet, as such narrowing conversions
are bad even in versions of the standard where they're allowed.