From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4809 invoked by alias); 8 Mar 2012 14:29:36 -0000 Received: (qmail 4794 invoked by uid 22791); 8 Mar 2012 14:29:35 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from localhost (HELO gcc.gnu.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 08 Mar 2012 14:29:22 +0000 From: "bircoph at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/40056] implicit instantiation of function templates fails with -O2, works with -O and -g... Date: Thu, 08 Mar 2012 14:29:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: bircoph at gmail dot com X-Bugzilla-Status: RESOLVED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2012-03/txt/msg00681.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40056 Andrew Savchenko changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bircoph at gmail dot com --- Comment #5 from Andrew Savchenko 2012-03-08 14:28:48 UTC --- The problem is still here with gcc-4.5.3 if compiled with -O3: x86_64-pc-linux-gnu-gcc -O -march=core2 -m64 -c TStreamerInfoReadBuffer.cxx -o TStreamerInfoReadBuffer-1.o x86_64-pc-linux-gnu-gcc -O2 -march=core2 -m64 -c TStreamerInfoReadBuffer.cxx -o TStreamerInfoReadBuffer-2.o x86_64-pc-linux-gnu-gcc -O3 -march=core2 -m64 -c TStreamerInfoReadBuffer.cxx -o TStreamerInfoReadBuffer-1.o nm TStreamerInfoReadBuffer-1.o | grep _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii 0000000000000000 W _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii nm TStreamerInfoReadBuffer-2.o | grep _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii 0000000000000000 W _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii nm TStreamerInfoReadBuffer-3.o | grep _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii 0000000000007b10 t _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii.clone.26 The guilty is -fipa-cp-clone option. Without it symbol is defined well: x86_64-pc-linux-gnu-gcc -O3 -fno-ipa-cp-clone -march=core2 -m64 -c TStreamerInfoReadBuffer.cxx -o TStreamerInfoReadBuffer-3-fipa-cp-clone.o nm TStreamerInfoReadBuffer-3-fipa-cp-clone.o | grep _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii 0000000000000000 W _ZN13TStreamerInfo10ReadBufferIPPcEEiR7TBufferRKT_iiii