From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-return-154378-listarch-gcc=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 7140 invoked by alias); 3 Jun 2009 07:40:44 -0000
Received: (qmail 7125 invoked by uid 22791); 3 Jun 2009 07:40:43 -0000
X-SWARE-Spam-Status: No, hits=-2.6 required=5.0 	tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS
X-Spam-Check-By: sourceware.org
Received: from mx2.redhat.com (HELO mx2.redhat.com) (66.187.237.31)     by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 03 Jun 2009 07:40:37 +0000
Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) 	by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n537eZda003700; 	Wed, 3 Jun 2009 03:40:35 -0400
Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) 	by int-mx2.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n537eYbL007712; 	Wed, 3 Jun 2009 03:40:34 -0400
Received: from [10.33.6.23] (vpn-6-23.fab.redhat.com [10.33.6.23]) 	by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id n537eWV4011317; 	Wed, 3 Jun 2009 03:40:33 -0400
Message-ID: <4A2628F0.2060708@redhat.com>
Date: Wed, 03 Jun 2009 07:40:00 -0000
From: Nick Clifton <nickc@redhat.com>
User-Agent: Thunderbird 2.0.0.21 (X11/20090320)
MIME-Version: 1.0
To: Diego Novillo <dnovillo@google.com>, Ian Lance Taylor <iant@google.com>
CC: gcc@gcc.gnu.org
Subject: Re: gcc --help for options which are not warnings or optimizations
References: <m3r5y3644t.fsf@google.com> <4A24F304.5040901@redhat.com> <b798aad50906020533w43d84663r9ca0a0f50cf70211@mail.gmail.com>
In-Reply-To: <b798aad50906020533w43d84663r9ca0a0f50cf70211@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
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
X-SW-Source: 2009-06/txt/msg00032.txt.bz2

Hi Ian, Hi Diego,

 > Diego Novillo wrote:
> --help=other?

That works. :-)

Actually, there already is a qualifier which will select 
-fstack-protector, I had just forgotten about it:

   % gcc --help=common | grep stack
   -Wstack-protector           Warn when not issuing stack smashing 
protection
   -fdefer-pop                 Defer popping functions args from stack until
   -fomit-frame-pointer        When possible do not generate stack frames
   -fstack-check               Insert stack checking code into the program
   -fstack-limit               This switch lacks documentation
   -fstack-limit-register=<register> Trap if the stack goes past <register>
   -fstack-limit-symbol=<name> Trap if the stack goes past symbol <name>
   -fstack-protector           Use propolice as a stack protection method
   -fstack-protector-all       Use a stack protection method for every 
function

Cheers
   Nick