cmssw: [UBSAN] runtime error: reference binding to null pointer

In UBSAN_X IBs, we see the runtime errors about “reference binding to null pointer” reported in RelVal 138.3:
Some stack traces
/pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/gcc/12.3.1-40d504be6370b5a30e3947a6e575ca28/include/c++/12.3.1/bits/stl_iterator.h:1096:17: runtime error: reference binding to null pointer of type 'double'
    #0 0x147f2306a9ef  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4d69ef)
    #1 0x147f2307c513  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4e8513)
    #2 0x147f23090659  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4fc659)
    #3 0x147f235929b6  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/pluginRecoVertexPrimaryVertexProducerPlugins.so+0x1159b6)
    #4 0x14814028104e in edm::stream::EDProducerAdaptorBase::doEvent(edm::EventTransitionInfo const&, edm::ActivityRegistry*, edm::ModuleCallingContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/src/stream/EDProducerAdaptorBase.cc:82
    #5 0x14814012f2c8 in edm::WorkerT<edm::stream::EDProducerAdaptorBase>::implDo(edm::EventTransitionInfo const&, edm::ModuleCallingContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/src/WorkerT.cc:202
    #6 0x14813f90806f in edm::workerhelper::CallImpl<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >::call(edm::Worker*, edm::StreamID, edm::EventTransitionInfo const&, edm::ActivityRegistry*, edm::ModuleCallingContext const*, edm::StreamContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:666
    #7 0x14813f90806f in edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}::operator()() const /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1171
    #8 0x14813f90806f in decltype ({parm#1}()) edm::convertException::wrap<edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}>(edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Utilities/interface/ConvertException.h:21
    #9 0x14813f908a79 in bool edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1170
    #10 0x14813f908a79 in std::__exception_ptr::exception_ptr edm::Worker::runModuleAfterAsyncPrefetch<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(std::__exception_ptr::exception_ptr, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1084
    #11 0x14813f920dcf in edm::Worker::RunModuleTask<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >::execute() /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:495
    #12 0x14814142e759 in operator() /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Concurrency/src/WaitingTaskList.cc:206
    #13 0x14814142e759 in task_ptr_or_nullptr_impl<const edm::WaitingTaskList::announce()::<lambda()>&> /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:115
    #14 0x14814142e759 in task_ptr_or_nullptr<const edm::WaitingTaskList::announce()::<lambda()>&> /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:125
    #15 0x14814142e759 in execute /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:452
    #16 0x14813874f95a in tbb::detail::d1::task* tbb::detail::r1::task_dispatcher::local_wait_for_all<false, tbb::detail::r1::outermost_worker_waiter>(tbb::detail::d1::task*, tbb::detail::r1::outermost_worker_waiter&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/task_dispatcher.h:322
    #17 0x14813874f95a in tbb::detail::d1::task* tbb::detail::r1::task_dispatcher::local_wait_for_all<tbb::detail::r1::outermost_worker_waiter>(tbb::detail::d1::task*, tbb::detail::r1::outermost_worker_waiter&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/task_dispatcher.h:458
    #18 0x14813874f95a in tbb::detail::r1::arena::process(tbb::detail::r1::thread_data&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/arena.cpp:137
    #19 0x14813874f95a in tbb::detail::r1::market::process(rml::job&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/market.cpp:599
    #20 0x148138751b0d in tbb::detail::r1::rml::private_worker::run() /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/private_server.cpp:271
    #21 0x148138751b0d in tbb::detail::r1::rml::private_worker::thread_routine(void*) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/private_server.cpp:221
    #22 0x14813725b1c9 in start_thread (/lib64/libpthread.so.0+0x81c9)
    #23 0x148136ec7e72 in __clone (/lib64/libc.so.6+0x39e72)

/pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/gcc/12.3.1-40d504be6370b5a30e3947a6e575ca28/include/c++/12.3.1/bits/stl_vector.h:1207:16: runtime error: reference binding to null pointer of type 'value_type'
    #0 0x147f2306a9db  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4d69db)
    #1 0x147f2307c513  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4e8513)
    #2 0x147f23090659  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/libRecoVertexPrimaryVertexProducer.so+0x4fc659)
    #3 0x147f235929b6  (/cvmfs/.../CMSSW_14_0_UBSANR630_X_2023-11-19-2300/lib/el8_amd64_gcc12/pluginRecoVertexPrimaryVertexProducerPlugins.so+0x1159b6)
    #4 0x14814028104e in edm::stream::EDProducerAdaptorBase::doEvent(edm::EventTransitionInfo const&, edm::ActivityRegistry*, edm::ModuleCallingContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/src/stream/EDProducerAdaptorBase.cc:82
    #5 0x14814012f2c8 in edm::WorkerT<edm::stream::EDProducerAdaptorBase>::implDo(edm::EventTransitionInfo const&, edm::ModuleCallingContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/src/WorkerT.cc:202
    #6 0x14813f90806f in edm::workerhelper::CallImpl<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >::call(edm::Worker*, edm::StreamID, edm::EventTransitionInfo const&, edm::ActivityRegistry*, edm::ModuleCallingContext const*, edm::StreamContext const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:666
    #7 0x14813f90806f in edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}::operator()() const /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1171
    #8 0x14813f90806f in decltype ({parm#1}()) edm::convertException::wrap<edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}>(edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*)::{lambda()#1}) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Utilities/interface/ConvertException.h:21
    #9 0x14813f908a79 in bool edm::Worker::runModule<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1170
    #10 0x14813f908a79 in std::__exception_ptr::exception_ptr edm::Worker::runModuleAfterAsyncPrefetch<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >(std::__exception_ptr::exception_ptr, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::TransitionInfoType const&, edm::StreamID, edm::ParentContext const&, edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1>::Context const*) /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:1084
    #11 0x14813f920dcf in edm::Worker::RunModuleTask<edm::OccurrenceTraits<edm::EventPrincipal, (edm::BranchActionType)1> >::execute() /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Framework/interface/maker/Worker.h:495
    #12 0x14814142e759 in operator() /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/017a81777288b3c2017036092c9ddf12/opt/cmssw/el8_amd64_gcc12/cms/cmssw/CMSSW_14_0_UBSANR630_X_2023-11-19-2300/src/FWCore/Concurrency/src/WaitingTaskList.cc:206
    #13 0x14814142e759 in task_ptr_or_nullptr_impl<const edm::WaitingTaskList::announce()::<lambda()>&> /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:115
    #14 0x14814142e759 in task_ptr_or_nullptr<const edm::WaitingTaskList::announce()::<lambda()>&> /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:125
    #15 0x14814142e759 in execute /pool/condor/dir_44888/jenkins/workspace/build-any-ib/w/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/include/oneapi/tbb/task_group.h:452
    #16 0x14813874f95a in tbb::detail::d1::task* tbb::detail::r1::task_dispatcher::local_wait_for_all<false, tbb::detail::r1::outermost_worker_waiter>(tbb::detail::d1::task*, tbb::detail::r1::outermost_worker_waiter&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/task_dispatcher.h:322
    #17 0x14813874f95a in tbb::detail::d1::task* tbb::detail::r1::task_dispatcher::local_wait_for_all<tbb::detail::r1::outermost_worker_waiter>(tbb::detail::d1::task*, tbb::detail::r1::outermost_worker_waiter&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/task_dispatcher.h:458
    #18 0x14813874f95a in tbb::detail::r1::arena::process(tbb::detail::r1::thread_data&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/arena.cpp:137
    #19 0x14813874f95a in tbb::detail::r1::market::process(rml::job&) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/market.cpp:599
    #20 0x148138751b0d in tbb::detail::r1::rml::private_worker::run() /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/private_server.cpp:271
    #21 0x148138751b0d in tbb::detail::r1::rml::private_worker::thread_routine(void*) /data/cmsbld/jenkins/workspace/auto-builds/CMSSW_13_3_0_pre3-el8_amd64_gcc12/build/CMSSW_13_3_0_pre3-build/BUILD/el8_amd64_gcc12/external/tbb/v2021.9.0-e755918dac6a30ec36eff63ac4f7ddec/tbb-v2021.9.0/src/tbb/private_server.cpp:221
    #22 0x14813725b1c9 in start_thread (/lib64/libpthread.so.0+0x81c9)
    #23 0x148136ec7e72 in __clone (/lib64/libc.so.6+0x39e72)
(the actual failure of this relval is probably not related to these errors, see #37362)
About this issue

Original URL
State: closed
Created 7 months ago
Comments: 23 (22 by maintainers)
Most upvoted comments

ah, if nele is zero, why does anything in the default value matter?
Perhaps because the default value is ill-defined in the first place? The code asks to create one PackedCandidatePtr(lost_tracks, -1), but in case of nele == 0 not to fill the ele2lostptr with it.
Constructing a Ptr with a Handle and a key of -1 (or any key value beyond the number of elements in the pointed-to-collection) leads to undefined behavior. I’m honestly surprised that none of our tools have caught it (ok, after looking a bit deeper after optimizer the constructor’s code probably looks like pointer arithmetic without direct connection to end-pointer of the container, that might be hard to catch by ASAN or UBSAN).
The default value should be PackedCandidatePtr() regardless of the value of nele.
makortel on Nov 27, 2023
@slava77 sure, testing this now.
iarspider on Nov 23, 2023
type tracking
slava77 on Nov 23, 2023