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Re: cc1: warning: unrecognized command line option "-Wno-narrowing"

From: Paolo Carlini <pcarlini at gmail dot com>
To: Jonathan Wakely <jwakely dot gcc at gmail dot com>
Cc: Michael Meissner <meissner at linux dot vnet dot ibm dot com>, Ralf Corsepius <ralf dot corsepius at rtems dot org>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>, JoelSherrill <joel dot sherrill at oarcorp dot com>, Jason Merrill <jason at redhat dot com>
Date: Tue, 8 Nov 2011 21:22:49 +0100
Subject: Re: cc1: warning: unrecognized command line option "-Wno-narrowing"
References: <4EB626CC.7040201@rtems.org> <20111108192922.GB30061@meissner-tiger.homedns.org> <CAH6eHdQt2ODQv1uqRkZDCe7Oe6K8sQcxQ6HpgJrpRd2LG7UGOw@mail.gmail.com>

Hi,

> I saw it on a native build, possibly netbsd, but I ignored it as I was
> in the middle of something.  Will keep an eye out for it again.

I believe that the core issue is pretty clear: -Wno-narrowing disables a C++ only warning but somehow we are passing it also in a few C compiler invocations, thus the driver warns. We could suppress such warnings too ;) or special case those files?

Paolo

Follow-Ups:
- Re: cc1: warning: unrecognized command line option "-Wno-narrowing"
  - From: Jason Merrill

References:
- cc1: warning: unrecognized command line option "-Wno-narrowing"
  - From: Ralf Corsepius
- Re: cc1: warning: unrecognized command line option "-Wno-narrowing"
  - From: Michael Meissner
- Re: cc1: warning: unrecognized command line option "-Wno-narrowing"
  - From: Jonathan Wakely

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