From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 82496 invoked by alias); 28 Apr 2015 10:01:29 -0000 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 Received: (qmail 82383 invoked by uid 48); 28 Apr 2015 10:01:20 -0000 From: "yan12125 at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/65913] New: Linking failure without -latomic Date: Tue, 28 Apr 2015 10:01:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 5.1.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: yan12125 at gmail dot com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status bug_severity priority component assigned_to reporter target_milestone Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-04/txt/msg02379.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65913 Bug ID: 65913 Summary: Linking failure without -latomic Product: gcc Version: 5.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: yan12125 at gmail dot com Target Milestone: --- #include #include struct Simple1 { int i; }; int main() { std::atomic s1; std::cout << std::boolalpha << s1.is_lock_free() << '\n'; return 0; } On GCC 5.1.0, the following program can't be compiled without -latomic: g++ -v test.cpp -std=c++11 Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: /build/gcc-multilib/src/gcc-5.1.0/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --with-default-libstdcxx-abi=c++98 Thread model: posix gcc version 5.1.0 (GCC) COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/cc1plus -quiet -v -D_GNU_SOURCE test.cpp -quiet -dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -std=c++11 -version -o /tmp/ccrpKTDe.s GNU C++11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu) compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version 3.1.2-p11, MPC version 1.0.3 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../x86_64-unknown-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../include/c++/5.1.0 /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../include/c++/5.1.0/x86_64-unknown-linux-gnu /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../include/c++/5.1.0/backward /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include /usr/local/include /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/include-fixed /usr/include End of search list. GNU C++11 (GCC) version 5.1.0 (x86_64-unknown-linux-gnu) compiled by GNU C version 5.1.0, GMP version 6.0.0, MPFR version 3.1.2-p11, MPC version 1.0.3 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 13af7a32108dcf1445ef29e0b81ed4a1 COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' as -v --64 -o /tmp/ccb54wZN.o /tmp/ccrpKTDe.s GNU assembler version 2.25.0 (x86_64-unknown-linux-gnu) using BFD version (GNU Binutils) 2.25.0 COMPILER_PATH=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/usr/lib/gcc/x86_64-unknown-linux-gnu/:/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/usr/lib/gcc/x86_64-unknown-linux-gnu/ LIBRARY_PATH=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/:/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib/:/lib/../lib/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/collect2 -plugin /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/liblto_plugin.so -plugin-opt=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/lto-wrapper -plugin-opt=-fresolution=/tmp/ccoH7Vln.res -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --build-id --eh-frame-hdr --hash-style=gnu -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib/crt1.o /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib/crti.o /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/crtbegin.o -L/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0 -L/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../.. /tmp/ccb54wZN.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/crtend.o /usr/lib/gcc/x86_64-unknown-linux-gnu/5.1.0/../../../../lib/crtn.o /tmp/ccb54wZN.o: In function `std::atomic::is_lock_free() const': test.cpp:(.text._ZNKSt6atomicI7Simple1E12is_lock_freeEv[_ZNKSt6atomicI7Simple1E12is_lock_freeEv]+0x21): undefined reference to `__atomic_is_lock_free' collect2: error: ld returned 1 exit status Whlie on GCC 4.9.2 of another machine, the program compiles without -latomic: $ g++ -v test.cpp -std=c++11 Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 4.9.2 (Debian 4.9.2-10) COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/4.9/cc1plus -quiet -v -imultiarch x86_64-linux-gnu -D_GNU_SOURCE test.cpp -quiet -dumpbase test.cpp -mtune=generic -march=x86-64 -auxbase test -std=c++11 -version -o /tmp/ccHcMiXf.s GNU C++ (Debian 4.9.2-10) version 4.9.2 (x86_64-linux-gnu) compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2-p3, MPC version 1.0.2 warning: MPFR header version 3.1.2-p3 differs from library version 3.1.2-p11. warning: MPC header version 1.0.2 differs from library version 1.0.3. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/4.9" ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu" ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../x86_64-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/include/c++/4.9 /usr/include/x86_64-linux-gnu/c++/4.9 /usr/include/c++/4.9/backward /usr/lib/gcc/x86_64-linux-gnu/4.9/include /usr/local/include /usr/lib/gcc/x86_64-linux-gnu/4.9/include-fixed /usr/include/x86_64-linux-gnu /usr/include End of search list. GNU C++ (Debian 4.9.2-10) version 4.9.2 (x86_64-linux-gnu) compiled by GNU C version 4.9.2, GMP version 6.0.0, MPFR version 3.1.2-p3, MPC version 1.0.2 warning: MPFR header version 3.1.2-p3 differs from library version 3.1.2-p11. warning: MPC header version 1.0.2 differs from library version 1.0.3. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: ff85870e740eb08c48a56c2c170390f8 COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' as -v --64 -o /tmp/ccAoOSPq.o /tmp/ccHcMiXf.s GNU assembler version 2.25 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.25 COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.9/:/usr/lib/gcc/x86_64-linux-gnu/4.9/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.9/:/usr/lib/gcc/x86_64-linux-gnu/ LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/4.9/:/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../:/lib/:/usr/lib/ COLLECT_GCC_OPTIONS='-v' '-std=c++11' '-shared-libgcc' '-mtune=generic' '-march=x86-64' /usr/lib/gcc/x86_64-linux-gnu/4.9/collect2 -plugin /usr/lib/gcc/x86_64-linux-gnu/4.9/liblto_plugin.so -plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper -plugin-opt=-fresolution=/tmp/ccvETIJB.res -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc -plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --sysroot=/ --build-id --eh-frame-hdr -m elf_x86_64 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crt1.o /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.9/crtbegin.o -L/usr/lib/gcc/x86_64-linux-gnu/4.9 -L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.9/../../../../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/4.9/../../.. /tmp/ccAoOSPq.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib/gcc/x86_64-linux-gnu/4.9/crtend.o /usr/lib/gcc/x86_64-linux-gnu/4.9/../../../x86_64-linux-gnu/crtn.o Is it an incompatible change in libstdc++, or it's a bug? I can't find relevant reports.