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Re: [patch] Clarify interaction of -Wnarrowing with -std

From: Jason Merrill <jason at redhat dot com>
To: Jonathan Wakely <jwakely at redhat dot com>, gcc-patches at gcc dot gnu dot org
Cc: Gerald Pfeifer <gerald at pfeifer dot com>, Sandra Loosemore <sandra at codesourcery dot com>, Joseph Myers <joseph at codesourcery dot com>
Date: Fri, 19 Feb 2016 14:01:03 -0500
Subject: Re: [patch] Clarify interaction of -Wnarrowing with -std
Authentication-results: sourceware.org; auth=none
References: <20160219124235 dot GF3171 at redhat dot com>

On 02/19/2016 07:42 AM, Jonathan Wakely wrote:

In PR69864 Manu suggests improving the docs to explain that
-Wnarrowing sometimes produces errors not warnings.

I think the right way to do that is clarify how it interacts with
-std. Specifically that the effect of -Wnarrowing listed first in the
manual *only* applies to C++98 modes, For all later modes (not just
with -std=c++11 as it says now), narrowing conversions produce errors
or warnings by default.

OK for trunk?


OK, thanks.

Jason

Follow-Ups:
- Re: [patch] Clarify interaction of -Wnarrowing with -std
  - From: Sandra Loosemore

References:
- [patch] Clarify interaction of -Wnarrowing with -std
  - From: Jonathan Wakely

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