ilinpv added a comment.
In D127812#4009577 <https://reviews.llvm.org/D127812#4009577>, @hctim wrote: > In D127812#4009447 <https://reviews.llvm.org/D127812#4009447>, @hctim wrote: > >> Hi, this looks like a candidate for breaking the MSan bot: >> https://lab.llvm.org/buildbot/#/builders/5/builds/30139 >> >> Still looking into it and bisecting, will let you know when I have more >> info. To reproduce the bots, the best way (because MSan setup is tricky >> because it requires an instrumented libcxx) is to use the scripts from >> https://github.com/google/sanitizers/wiki/SanitizerBotReproduceBuild >> (buildbot_fast.sh is the right one). > > Yeah, unfortunately I did track this failure down to this commit and reverted > it upstream. If you need help figuring it out, please let me know. You may > find that adding `-fsanitize-memory-track-origins=2` useful to add to the > buildscript as well (which can be done by changing `check_stage2_msan` to > `check_stage2_msan_track_origins` in `buildbot_fast.sh`. It would be great to have more details how to setup up your bot, using buildbot_fast.sh on x86_64 Ubuntu 22.04 LTS leads to error ( pthreads installed ): CMake Error at /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:230 (message): Could NOT find Threads (missing: Threads_FOUND) Call Stack (most recent call first): /usr/share/cmake-3.22/Modules/FindPackageHandleStandardArgs.cmake:594 (_FPHSA_FAILURE_MESSAGE) /usr/share/cmake-3.22/Modules/FindThreads.cmake:238 (FIND_PACKAGE_HANDLE_STANDARD_ARGS) cmake/config-ix.cmake:114 (find_package) CMakeLists.txt:776 (include) Also MemorySanitizer: use-of-uninitialized-value cases from https://lab.llvm.org/buildbot/#/builders/5/builds/30139 looks fine locally, all values initialized, could MSAN produce false positive results? Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D127812/new/ https://reviews.llvm.org/D127812 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
