From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-help-return-55781-listarch-gcc-help=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 2514 invoked by alias); 3 Sep 2014 15:13:52 -0000
Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Id: <gcc-help.gcc.gnu.org>
List-Archive: <http://gcc.gnu.org/ml/gcc-help/>
List-Post: <mailto:gcc-help@gcc.gnu.org>
List-Help: <mailto:gcc-help-help@gcc.gnu.org>
Sender: gcc-help-owner@gcc.gnu.org
Received: (qmail 2472 invoked by uid 89); 3 Sep 2014 15:13:50 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-4.8 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2
X-HELO: mx1.redhat.com
Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Wed, 03 Sep 2014 15:13:48 +0000
Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22])	by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s83FDkkO019405	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL);	Wed, 3 Sep 2014 11:13:46 -0400
Received: from zebedee.pink ([10.3.113.10])	by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s83FDiAD006516;	Wed, 3 Sep 2014 11:13:44 -0400
Message-ID: <54073028.9030601@redhat.com>
Date: Wed, 03 Sep 2014 15:13:00 -0000
From: Andrew Haley <aph@redhat.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.7.0
MIME-Version: 1.0
To: Melvin Blades <melvin.blades@gmail.com>
CC: Ian Lance Taylor <iant@google.com>,        "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
Subject: Re: removing unused functions during final link
References: <CAG=1SRt3jGm2invypb+qa_viFefd7_v9oq8bFs2ji72hvbcU1Q@mail.gmail.com>	<CAKOQZ8w_2Rg85sfHTwvZSYngGw4=n+oeVz7rWcU2x2ngJRebqA@mail.gmail.com>	<CAG=1SRvTDHY+myhSK3SrVJrHdh_uKMjH7RBu1ubH=UC0_WriHA@mail.gmail.com>	<5406EBB5.7040903@redhat.com> <CAG=1SRspbFhponeoY1dajoBzvkNJmKPmQuroiggdJJx=gP7avw@mail.gmail.com>
In-Reply-To: <CAG=1SRspbFhponeoY1dajoBzvkNJmKPmQuroiggdJJx=gP7avw@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
X-SW-Source: 2014-09/txt/msg00027.txt.bz2

On 09/03/2014 04:09 PM, Melvin Blades wrote:
> The resulting executable contains the texts strings and function names
> from both functions in show.c and neither function of show2.c  My
> usage of -fdata-section -ffunction-section and -gc-sections prevents
> the  functions in show2.c from being linked in , but not the unused
> functions in show.c

Something must be referring to them; they must be reachable.
That or there's a bug.
There's no way for anyone to know without seeing code.

Andrew.