From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20565 invoked by alias); 17 Jul 2012 08:04:31 -0000 Received: (qmail 20545 invoked by uid 22791); 17 Jul 2012 08:04:29 -0000 X-SWARE-Spam-Status: No, hits=-3.4 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,TW_BJ,TW_CX,TW_DC,TW_GX,TW_LG 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; Tue, 17 Jul 2012 08:04:15 +0000 From: "hakan at debian dot org" To: gcc-bugs@gcc.gnu.org Subject: [Bug c/53992] New: Combining -fopenmp and -fgnu-tm results in segfault or misbehaving binaries Date: Tue, 17 Jul 2012 08:04:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: hakan at debian dot org 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: X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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: 2012-07/txt/msg01283.txt.bz2 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53992 Bug #: 53992 Summary: Combining -fopenmp and -fgnu-tm results in segfault or misbehaving binaries Classification: Unclassified Product: gcc Version: 4.7.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned@gcc.gnu.org ReportedBy: hakan@debian.org Created attachment 27808 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=3D27808 Preprocessed source Hi, is the combination of -fopenmp and -fgnu-tm supported? Otherwise maybe some error message explaining that it's not would be appropriate? Attached is a = case that makes gcc segfault: $ gcc -v -fopenmp -fgnu-tm min.c && ./a.out=20 Using built-in specs. COLLECT_GCC=3Dgcc COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion=3D'Debian 4.7.1-2' --with-bugurl=3Dfile:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=3Dc,c++,go,fortran,objc,obj-c++ --prefix=3D/usr --program-suffix=3D-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix --with-gxx-include-dir=3D/usr/include/c++/4.7 --libdir=3D/usr/lib --enable-nls --with-sysroot=3D/ --enable-clocale=3Dgnu --enable-libstdcxx-debug --enable-libstdcxx-time=3Dyes --enable-gnu-unique-= object --enable-plugin --enable-objc-gc --with-arch-32=3Di586 --with-tune=3Dgeneric --enable-checking=3Drelease --build=3Dx86_64-linux-gnu --host=3Dx86_64-linu= x-gnu --target=3Dx86_64-linux-gnu Thread model: posix gcc version 4.7.1 (Debian 4.7.1-2)=20 COLLECT_GCC_OPTIONS=3D'-v' '-fopenmp' '-fgnu-tm' '-mtune=3Dgeneric' '-march= =3Dx86-64' '-pthread' '-pthread' /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1 -quiet -v -imultiarch x86_64-linux-g= nu -D_REENTRANT min.c -quiet -dumpbase min.c -mtune=3Dgeneric -march=3Dx86-64 = -auxbase min -version -fopenmp -fgnu-tm -o /tmp/ccsCNMGH.s GNU C (Debian 4.7.1-2) version 4.7.1 (x86_64-linux-gnu) compiled by GNU C version 4.7.1, GMP version 5.0.5, MPFR version 3.1.0-= p10, MPC version 0.9 warning: GMP header version 5.0.5 differs from library version 5.0.4. warning: MPFR header version 3.1.0-p10 differs from library version 3.1.0-p= 3. GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-linux-gnu/4.7/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. GNU C (Debian 4.7.1-2) version 4.7.1 (x86_64-linux-gnu) compiled by GNU C version 4.7.1, GMP version 5.0.5, MPFR version 3.1.0-= p10, MPC version 0.9 warning: GMP header version 5.0.5 differs from library version 5.0.4. warning: MPFR header version 3.1.0-p10 differs from library version 3.1.0-p= 3. GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 Compiler executable checksum: 9e08a85d4bf68460be9df04a431a25b0 min.c: In function =E2=80=98main=E2=80=99: min.c:16:5: warning: incompatible implicit declaration of built-in function =E2=80=98printf=E2=80=99 [enabled by default] min.c: In function =E2=80=98main._omp_fn.0=E2=80=99: min.c:8:13: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See for instructions. Preprocessed source stored into /tmp/cczZfnZg.out file, please attach this = to your bugreport. If -O3 is enabled a binary is produced, but it misbehaves: $ gcc -v -fopenmp -fgnu-tm -O3 min.c=20 Using built-in specs. COLLECT_GCC=3Dgcc COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/x86_64-linux-gnu/4.7/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion=3D'Debian 4.7.1-2' --with-bugurl=3Dfile:///usr/share/doc/gcc-4.7/README.Bugs --enable-languages=3Dc,c++,go,fortran,objc,obj-c++ --prefix=3D/usr --program-suffix=3D-4.7 --enable-shared --enable-linker-build-id --with-system-zlib --libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix --with-gxx-include-dir=3D/usr/include/c++/4.7 --libdir=3D/usr/lib --enable-nls --with-sysroot=3D/ --enable-clocale=3Dgnu --enable-libstdcxx-debug --enable-libstdcxx-time=3Dyes --enable-gnu-unique-= object --enable-plugin --enable-objc-gc --with-arch-32=3Di586 --with-tune=3Dgeneric --enable-checking=3Drelease --build=3Dx86_64-linux-gnu --host=3Dx86_64-linu= x-gnu --target=3Dx86_64-linux-gnu Thread model: posix gcc version 4.7.1 (Debian 4.7.1-2)=20 COLLECT_GCC_OPTIONS=3D'-v' '-fopenmp' '-fgnu-tm' '-O3' '-mtune=3Dgeneric' '-march=3Dx86-64' '-pthread' '-pthread' /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1 -quiet -v -imultiarch x86_64-linux-g= nu -D_REENTRANT min.c -quiet -dumpbase min.c -mtune=3Dgeneric -march=3Dx86-64 = -auxbase min -O3 -version -fopenmp -fgnu-tm -o /tmp/ccwYfizG.s GNU C (Debian 4.7.1-2) version 4.7.1 (x86_64-linux-gnu) compiled by GNU C version 4.7.1, GMP version 5.0.5, MPFR version 3.1.0-= p10, MPC version 0.9 warning: GMP header version 5.0.5 differs from library version 5.0.4. warning: MPFR header version 3.1.0-p10 differs from library version 3.1.0-p= 3. GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-linux-gnu/4.7/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/4.7/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. GNU C (Debian 4.7.1-2) version 4.7.1 (x86_64-linux-gnu) compiled by GNU C version 4.7.1, GMP version 5.0.5, MPFR version 3.1.0-= p10, MPC version 0.9 warning: GMP header version 5.0.5 differs from library version 5.0.4. warning: MPFR header version 3.1.0-p10 differs from library version 3.1.0-p= 3. GGC heuristics: --param ggc-min-expand=3D100 --param ggc-min-heapsize=3D131= 072 Compiler executable checksum: 9e08a85d4bf68460be9df04a431a25b0 min.c: In function =E2=80=98main=E2=80=99: min.c:16:5: warning: incompatible implicit declaration of built-in function =E2=80=98printf=E2=80=99 [enabled by default] COLLECT_GCC_OPTIONS=3D'-v' '-fopenmp' '-fgnu-tm' '-O3' '-mtune=3Dgeneric' '-march=3Dx86-64' '-pthread' '-pthread' as -v --64 -o /tmp/cc3HGMmf.o /tmp/ccwYfizG.s GNU assembler version 2.22 (x86_64-linux-gnu) using BFD version (GNU Binuti= ls for Debian) 2.22 COMPILER_PATH=3D/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linu= x-gnu/4.7/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.7= /:/usr/lib/gcc/x86_64-linux-gnu/ LIBRARY_PATH=3D/usr/lib/gcc/x86_64-linux-gnu/4.7/:/usr/lib/gcc/x86_64-linux= -gnu/4.7/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.7/../..= /../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:= /usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../:/lib/:/usr/lib/ Reading specs from /usr/lib/gcc/x86_64-linux-gnu/4.7/libgomp.spec Reading specs from /usr/lib/gcc/x86_64-linux-gnu/4.7/libitm.spec COLLECT_GCC_OPTIONS=3D'-v' '-fopenmp' '-fgnu-tm' '-O3' '-mtune=3Dgeneric' '-march=3Dx86-64' '-pthread' '-pthread' /usr/lib/gcc/x86_64-linux-gnu/4.7/collect2 --sysroot=3D/ --build-id --no-add-needed --eh-frame-hdr -m elf_x86_64 --hash-style=3Dboth -dynamic-l= inker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.7/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/4.7 -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.7/../../.. /tmp/cc3HGMmf.o -lgomp -litm -= lgcc --as-needed -lgcc_s --no-as-needed -lpthread -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-linux-gnu/4.7/crtend.o /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/crtn.o $ ./a.out=20 10000 Expected result was -9999