From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-prs-return-20950-listarch-gcc-prs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 8296 invoked by alias); 7 Aug 2002 03:26:01 -0000
Mailing-List: contact gcc-prs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-prs/>
List-Post: <mailto:gcc-prs@gcc.gnu.org>
List-Help: <mailto:gcc-prs-help@gcc.gnu.org>
Sender: gcc-prs-owner@gcc.gnu.org
Received: (qmail 8268 invoked by uid 71); 7 Aug 2002 03:26:01 -0000
Resent-Date: 7 Aug 2002 03:26:01 -0000
Resent-Message-ID: <20020807032601.8267.qmail@sources.redhat.com>
Resent-From: gcc-gnats@gcc.gnu.org (GNATS Filer)
Resent-To: nobody@gcc.gnu.org
Resent-Cc: gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org
Resent-Reply-To: gcc-gnats@gcc.gnu.org, drepper@redhat.com
Received: (qmail 8224 invoked by uid 61); 7 Aug 2002 03:25:54 -0000
Message-Id: <20020807032554.8223.qmail@sources.redhat.com>
Date: Tue, 06 Aug 2002 20:26:00 -0000
From: drepper@redhat.com
Reply-To: drepper@redhat.com
To: gcc-gnats@gcc.gnu.org
X-Send-Pr-Version: gnatsweb-2.9.3 (1.1.1.1.2.31)
Subject: optimization/7515: invalid inlining
X-SW-Source: 2002-08/txt/msg00120.txt.bz2
List-Id: <gcc-prs.sourceware.org>


>Number:         7515
>Category:       optimization
>Synopsis:       invalid inlining
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Aug 06 20:26:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Ulrich Drepper
>Release:        at least 2.96 and later
>Organization:
>Environment:
x86 Linux, but probably all others
>Description:
When -O3 is used gcc performs invalid inlining optimizations.  Functions, which are not declared static or have a visibility != default must not be inlined.  At least when generating code for ELF binaries.  The semantic changes since 'foo' will not be looked up using the ELF symbol resolution rules which would allow interposition.
>How-To-Repeat:
Compile the attached code with -O3.  The result is that 'foo' gets inlined.
>Fix:
Only inline if the function is static, has visibility != default, or possibly if a new function attribute or command line option is used.
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="o3.c"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="o3.c"

aW50CmZvbyAoaW50IGEpCnsKICAgIHJldHVybiBhOwp9CgppbnQKYmFyIChpbnQgYSkKewogICAg
cmV0dXJuIGZvbyAoYSkgPT0gMTsKfQo=