From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2230 invoked by alias); 26 Mar 2012 10:08:11 -0000 Received: (qmail 2217 invoked by uid 22791); 26 Mar 2012 10:08:09 -0000 X-SWARE-Spam-Status: No, hits=-2.8 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_CX,TW_GC,TW_IB 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; Mon, 26 Mar 2012 10:07:55 +0000 From: "dimhen at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug lto/52687] [LTO] undefined vtable in dynamic library Date: Mon, 26 Mar 2012 10:11:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: lto X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dimhen at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: 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/msg02209.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52687 --- Comment #2 from Dmitry G. Dyachenko 2012-03-26 10:07:53 UTC --- May be issue is Fedora 16 specific? i update gcc-trunk and retest with gcc-4.8.0/r185790 and with F16 gcc For gcc-4.8.0 i try -O0/1/2/3/fast and w/o -O with no differences [dimhen@dim tst]$ gcc -v Using built-in specs. COLLECT_GCC=/usr/bin/gcc COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.6.3/lto-wrapper Target: x86_64-redhat-linux Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux Thread model: posix gcc version 4.6.3 20120306 (Red Hat 4.6.3-2) (GCC) w/o LTO [dimhen@dim tst]$ rm -f foo.o libfoo.so && g++ -c foo.cpp -o foo.o && g++ -shared foo.o -o libfoo.so && nm -D -C -u libfoo.so foo.o | grep foo nm: foo.o: No symbols libfoo.so: foo.o: with LTO [dimhen@dim tst]$ rm -f foo.o libfoo.so && g++ -flto -c foo.cpp -o foo.o && g++ -shared foo.o -flto -o libfoo.so && nm -D -C -u libfoo.so foo.o | grep foo nm: foo.o: No symbols libfoo.so: U vtable for foo foo.o: [dimhen@dim tst]$ uname -a Linux dim.cp.ru 3.3.0-4.fc16.x86_64 #1 SMP Tue Mar 20 18:05:40 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux gcc-4.8.0 with LTO [dimhen@dim tst]$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/local/gcc_current/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /home/dimhen/src/gcc-current/configure --prefix=/usr/local/gcc_current --with-multilib-list=m64 --enable-__cxa_atexit --enable-shared --enable-checking=df,fold,rtl,tree,yes --enable-gnu-unique-object --enable-linker-build-id --enable-languages=c,c++,lto --enable-plugin --with-tune=generic --enable-version-specific-runtime-libs Thread model: posix gcc version 4.8.0 20120326 (experimental) [trunk revision 185790] (GCC) [dimhen@dim tst]$ rm -f foo.o libfoo.so && g++ -flto -c foo.cpp -o foo.o && g++ -shared foo.o -flto -o libfoo.so && nm -D -C -u libfoo.so foo.o | grep foo nm: foo.o: No symbols libfoo.so: U vtable for foo foo.o: