From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id A23933858402; Thu, 11 Nov 2021 10:06:31 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org A23933858402 From: "dl.soluz at gmx dot net" To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/103186] New: redefinition of template symbol error with strange error diagnostic Date: Thu, 11 Nov 2021 10:06:31 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: c++ X-Bugzilla-Version: 11.2.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: dl.soluz at gmx dot net 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 attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Nov 2021 10:06:31 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103186 Bug ID: 103186 Summary: redefinition of template symbol error with strange error diagnostic Product: gcc Version: 11.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: dl.soluz at gmx dot net Target Milestone: --- Created attachment 51764 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D51764&action=3Dedit test source How to reproduce use the attached test.cpp - i reduced it as much as possible while keeping = the error(s) intact good case - problematik parts are disabled: gcc -Wall -Wextra -std=3Dc++17 test.cpp test 1: (https://gcc.godbolt.org/z/WvqbWq1e5) gcc -Wall -Wextra -std=3Dc++17 test.cpp -DTEST=3D1=20 est.cpp:77:12: error: redefinition of =E2=80=98const char _ZTSZN12GetSetHelperIaE3setESt8functionIFvvEEEd_UlDpOT_E_ []=E2=80=99 77 | int main(){} | ^ test.cpp:77:12: note: =E2=80=98const char _ZTSZN12GetSetHelperIaE3setESt8functionIFvvEEEd_UlDpOT_E_ [54]=E2=80=99 pre= viously defined here test 2: gcc -Wall -Wextra -std=3Dc++17 test.cpp -DTEST=3D2 /usr/bin/ld: /tmp/ccCdRNNd.o:(.data.rel.ro._ZTIZN12GetSetHelperIhE3setESt8functionIFvvEE= Ed_UlDpOT_E_[_ZTIZN12GetSetHelperIhE3setESt8functionIFvvEEEd_UlDpOT_E_]+0x0= ): undefined reference to `vtable for __cxxabiv1::__class_type_info' /usr/bin/ld: /tmp/ccCdRNNd.o:(.data.rel.ro._ZTIZN12GetSetHelperIaE3setESt8functionIFvvEE= Ed_UlDpOT_E_[_ZTIZN12GetSetHelperIaE3setESt8functionIFvvEEEd_UlDpOT_E_]+0x0= ): undefined reference to `vtable for __cxxabiv1::__class_type_info' /usr/bin/ld: /tmp/ccCdRNNd.o:(.data.rel.local.DW.ref.__gxx_personality_v0[DW.ref.__gxx_p= ersonality_v0]+0x0): undefined reference to `__gxx_personality_v0' collect2: error: ld returned 1 exit status this linker problem does not occure on gcc.godbolt - maybe a Ubuntu ld only problem Test with other versions, compilers: error occures also with gcc.godbolt trunk/11.2/11.1, does not happen with g= cc 10.3 or lower does not happen with Clang versions down to 8.x and further does not happen with VS2017/2019(up to date versions) System: using up-to-date(11.11.2021) Ubuntu 21.10 x64 with default gcc 11.2.0, clang 13.x and default ld 2.37 $ uname -a Linux linux 5.13.0-20-generic #20-Ubuntu SMP Fri Oct 15 14:21:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux $ gcc -v Using built-in specs. COLLECT_GCC=3Dgcc COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/x86_64-linux-gnu/11/lto-wrapper OFFLOAD_TARGET_NAMES=3Dnvptx-none:amdgcn-amdhsa OFFLOAD_TARGET_DEFAULT=3D1 Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion=3D'Ubuntu 11.2.0-7ub= untu2' --with-bugurl=3Dfile:///usr/share/doc/gcc-11/README.Bugs --enable-languages=3Dc,ada,c++,go,brig,d,fortran,objc,obj-c++,m2 --prefix= =3D/usr --with-gcc-major-version-only --program-suffix=3D-11 --program-prefix=3Dx86_64-linux-gnu- --enable-shared --enable-linker-build-= id --libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix --libdir=3D/usr/lib --enable-nls --enable-bootstrap --enable-clocale=3Dgnu --enable-libstdcxx-debug --enable-libstdcxx-time=3Dyes --with-default-libstdcxx-abi=3Dnew --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --enable-default-pie --with-system-= zlib --enable-libphobos-checking=3Drelease --with-target-system-zlib=3Dauto --enable-objc-gc=3Dauto --enable-multiarch --disable-werror --enable-cet --with-arch-32=3Di686 --with-abi=3Dm64 --with-multilib-list=3Dm32,m64,mx32 --enable-multilib --with-tune=3Dgeneric --enable-offload-targets=3Dnvptx-none=3D/build/gcc-11-ZPT0kp/gcc-11-11.2.0/= debian/tmp-nvptx/usr,amdgcn-amdhsa=3D/build/gcc-11-ZPT0kp/gcc-11-11.2.0/deb= ian/tmp-gcn/usr --without-cuda-driver --enable-checking=3Drelease --build=3Dx86_64-linux-gnu --host=3Dx86_64-linux-gnu --target=3Dx86_64-linux-gnu --with-build-config=3Dbootstrap-lto-lean --enable-link-serialization=3D2 Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 11.2.0 (Ubuntu 11.2.0-7ubuntu2)=20 $ ld -v GNU ld (GNU Binutils for Ubuntu) 2.37=