Thanks Kostya, using Clang to build itself with ASan enabled, and running my build container in privileged mode, helped solve a lot of the problems. But I now encounter a lot of link errors while testing my stage-2 build: FAIL: libomp :: api/has_openmp.c (52345 of 54886) ******************** TEST 'libomp :: api/has_openmp.c' FAILED ******************** Script: -- : 'RUN': at line 1'; /home/bryanpkc/llvm-project/build/./bin/clang -fopenmp -pthread -fno-experimental-isel -I /home/bryanpkc/llvm-project/openmp/runtime/test -I /home/bryanpkc/llvm-project/build/projects/openmp/runtime/src -L /home/bryanpkc/llvm-project/build/lib -I /h ome/bryanpkc/llvm-project/openmp/runtime/test/ompt /home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c -o /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp -lm -latomic && /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp -- Exit Code: 1 Command Output (stdout): -- $ ":" "RUN: at line 1" $ "/home/bryanpkc/llvm-project/build/./bin/clang" "-fopenmp" "-pthread" "-fno-experimental-isel" "-I" "/home/bryanpkc/llvm-project/openmp/runtime/test" "-I" "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/src" "-L" "/home/bryanpkc/llvm-project/build/lib" "-I" "/home/bryanpkc/llvm-project/openmp/runtime/test/ompt" "/home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c" "-o" "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp" "-lm" "-latomic" # command stderr: /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined reference to `__asan_load_cxx_array_cookie' /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined reference to `__asan_set_shadow_f8' /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined reference to `__asan_stack_malloc_8' /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined reference to `__asan_stack_malloc_2' /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined reference to `__asan_unregister_globals' This type of failures are affecting multiple groups of tests: Builtins-aarch64-linux :: * LLVM :: tools/gold/X86/* libomp :: * libomptarget :: * Any ideas? Could you point me to the build bot that has a good Clang/LLVM/OpenMP configuration with ASan enabled? Unfortunately the documentation at https://llvm.org/docs/CMake.html is not clear on how to get this working. -- Bryan On Tue, Oct 20, 2020 at 12:33 PM Kostya Serebryany <kcc at google.com> wrote:> Hi Bryan, > > Yes, building LLVM with GCC+ASAN is a warranty void zone. > It can probably be made to work with some effort, but unless someone is > willing to > maintain a public bot with this build, it will remain unsupported. > > Building LLVM with LLVM+ASAN is fully supported, and the bots are > maintained. > > thanks! > > --kcc > > > On Tue, Oct 20, 2020 at 7:39 AM Bryan Chan via cfe-dev < > cfe-dev at lists.llvm.org> wrote: > >> Hi lists, >> >> I am encountering a large number of check-clang failures after building >> Clang/LLVM with -DLLVM_USE_SANITIZER=Address. I have reported the issue >> on Bugzilla (https://bugs.llvm.org/show_bug.cgi?id=47678). I cannot even >> compile helloworld.c with the resulting clang tool without a lot of false >> positives from ASan. Is it because I am not supposed to use GCC's >> AddressSanitizer when building Clang? >> >> -- >> Bryan >> _______________________________________________ >> cfe-dev mailing list >> cfe-dev at lists.llvm.org >> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev >> >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20201021/ad9e841a/attachment.html>
Kostya Serebryany via llvm-dev
2020-Oct-21 18:27 UTC
[llvm-dev] [cfe-dev] AddressSanitizer
+Vitaly Buka <vitalybuka at google.com> to help with the links to build bots. Not sure if any of those cover OpenMP. On Wed, Oct 21, 2020 at 5:50 AM Bryan Chan <bryanpkc at gmail.com> wrote:> Thanks Kostya, using Clang to build itself with ASan enabled, and running > my > build container in privileged mode, helped solve a lot of the problems. > But I > now encounter a lot of link errors while testing my stage-2 build: > > FAIL: libomp :: api/has_openmp.c (52345 of 54886) > ******************** TEST 'libomp :: api/has_openmp.c' FAILED > ******************** > Script: > -- > : 'RUN': at line 1'; /home/bryanpkc/llvm-project/build/./bin/clang > -fopenmp -pthread -fno-experimental-isel -I > /home/bryanpkc/llvm-project/openmp/runtime/test -I > /home/bryanpkc/llvm-project/build/projects/openmp/runtime/src -L > /home/bryanpkc/llvm-project/build/lib -I /h > ome/bryanpkc/llvm-project/openmp/runtime/test/ompt > /home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c -o > /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp > -lm -latomic && > /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp > -- > Exit Code: 1 > > Command Output (stdout): > -- > $ ":" "RUN: at line 1" > $ "/home/bryanpkc/llvm-project/build/./bin/clang" "-fopenmp" "-pthread" > "-fno-experimental-isel" "-I" > "/home/bryanpkc/llvm-project/openmp/runtime/test" "-I" > "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/src" "-L" > "/home/bryanpkc/llvm-project/build/lib" "-I" > "/home/bryanpkc/llvm-project/openmp/runtime/test/ompt" > "/home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c" "-o" > "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp" > "-lm" "-latomic" > # command stderr: > /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined > reference to `__asan_load_cxx_array_cookie' > /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined > reference to `__asan_set_shadow_f8' > /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined > reference to `__asan_stack_malloc_8' > /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined > reference to `__asan_stack_malloc_2' > /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined > reference to `__asan_unregister_globals' > > This type of failures are affecting multiple groups of tests: > > Builtins-aarch64-linux :: * > LLVM :: tools/gold/X86/* > libomp :: * > libomptarget :: * > > Any ideas? Could you point me to the build bot that has a good > Clang/LLVM/OpenMP > configuration with ASan enabled? Unfortunately the documentation at > https://llvm.org/docs/CMake.html is not clear on how to get this working. > > -- > Bryan > > > On Tue, Oct 20, 2020 at 12:33 PM Kostya Serebryany <kcc at google.com> wrote: > >> Hi Bryan, >> >> Yes, building LLVM with GCC+ASAN is a warranty void zone. >> It can probably be made to work with some effort, but unless someone is >> willing to >> maintain a public bot with this build, it will remain unsupported. >> >> Building LLVM with LLVM+ASAN is fully supported, and the bots are >> maintained. >> >> thanks! >> >> --kcc >> >> >> On Tue, Oct 20, 2020 at 7:39 AM Bryan Chan via cfe-dev < >> cfe-dev at lists.llvm.org> wrote: >> >>> Hi lists, >>> >>> I am encountering a large number of check-clang failures after building >>> Clang/LLVM with -DLLVM_USE_SANITIZER=Address. I have reported the issue >>> on Bugzilla (https://bugs.llvm.org/show_bug.cgi?id=47678). I cannot >>> even compile helloworld.c with the resulting clang tool without a lot of >>> false positives from ASan. Is it because I am not supposed to use GCC's >>> AddressSanitizer when building Clang? >>> >>> -- >>> Bryan >>> _______________________________________________ >>> cfe-dev mailing list >>> cfe-dev at lists.llvm.org >>> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev >>> >>-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20201021/bfd30318/attachment-0001.html>
Can you please share the full cmake command line? On Wed, 21 Oct 2020 at 11:28, Kostya Serebryany <kcc at google.com> wrote:> +Vitaly Buka <vitalybuka at google.com> to help with the links to build > bots. > Not sure if any of those cover OpenMP. > > On Wed, Oct 21, 2020 at 5:50 AM Bryan Chan <bryanpkc at gmail.com> wrote: > >> Thanks Kostya, using Clang to build itself with ASan enabled, and running >> my >> build container in privileged mode, helped solve a lot of the problems. >> But I >> now encounter a lot of link errors while testing my stage-2 build: >> >> FAIL: libomp :: api/has_openmp.c (52345 of 54886) >> ******************** TEST 'libomp :: api/has_openmp.c' FAILED >> ******************** >> Script: >> -- >> : 'RUN': at line 1'; /home/bryanpkc/llvm-project/build/./bin/clang >> -fopenmp -pthread -fno-experimental-isel -I >> /home/bryanpkc/llvm-project/openmp/runtime/test -I >> /home/bryanpkc/llvm-project/build/projects/openmp/runtime/src -L >> /home/bryanpkc/llvm-project/build/lib -I /h >> ome/bryanpkc/llvm-project/openmp/runtime/test/ompt >> /home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c -o >> /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp >> -lm -latomic && >> /home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp >> -- >> Exit Code: 1 >> >> Command Output (stdout): >> -- >> $ ":" "RUN: at line 1" >> $ "/home/bryanpkc/llvm-project/build/./bin/clang" "-fopenmp" "-pthread" >> "-fno-experimental-isel" "-I" >> "/home/bryanpkc/llvm-project/openmp/runtime/test" "-I" >> "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/src" "-L" >> "/home/bryanpkc/llvm-project/build/lib" "-I" >> "/home/bryanpkc/llvm-project/openmp/runtime/test/ompt" >> "/home/bryanpkc/llvm-project/openmp/runtime/test/api/has_openmp.c" "-o" >> "/home/bryanpkc/llvm-project/build/projects/openmp/runtime/test/api/Output/has_openmp.c.tmp" >> "-lm" "-latomic" >> # command stderr: >> /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined >> reference to `__asan_load_cxx_array_cookie' >> /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined >> reference to `__asan_set_shadow_f8' >> /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined >> reference to `__asan_stack_malloc_8' >> /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined >> reference to `__asan_stack_malloc_2' >> /usr/bin/ld: /home/bryanpkc/llvm-project/build/lib/libomp.so: undefined >> reference to `__asan_unregister_globals' >> >> This type of failures are affecting multiple groups of tests: >> >> Builtins-aarch64-linux :: * >> LLVM :: tools/gold/X86/* >> libomp :: * >> libomptarget :: * >> >> Any ideas? Could you point me to the build bot that has a good >> Clang/LLVM/OpenMP >> configuration with ASan enabled? Unfortunately the documentation at >> https://llvm.org/docs/CMake.html is not clear on how to get this working. >> >> -- >> Bryan >> >> >> On Tue, Oct 20, 2020 at 12:33 PM Kostya Serebryany <kcc at google.com> >> wrote: >> >>> Hi Bryan, >>> >>> Yes, building LLVM with GCC+ASAN is a warranty void zone. >>> It can probably be made to work with some effort, but unless someone is >>> willing to >>> maintain a public bot with this build, it will remain unsupported. >>> >>> Building LLVM with LLVM+ASAN is fully supported, and the bots are >>> maintained. >>> >>> thanks! >>> >>> --kcc >>> >>> >>> On Tue, Oct 20, 2020 at 7:39 AM Bryan Chan via cfe-dev < >>> cfe-dev at lists.llvm.org> wrote: >>> >>>> Hi lists, >>>> >>>> I am encountering a large number of check-clang failures after building >>>> Clang/LLVM with -DLLVM_USE_SANITIZER=Address. I have reported the >>>> issue on Bugzilla (https://bugs.llvm.org/show_bug.cgi?id=47678). I >>>> cannot even compile helloworld.c with the resulting clang tool without a >>>> lot of false positives from ASan. Is it because I am not supposed to use >>>> GCC's AddressSanitizer when building Clang? >>>> >>>> -- >>>> Bryan >>>> _______________________________________________ >>>> cfe-dev mailing list >>>> cfe-dev at lists.llvm.org >>>> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev >>>> >>>-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20201021/59798abb/attachment.html>