warning: 'tid' may be used uninitialized in this function in EventFilter/Utilities/src/FedRawDataInputSource.cc

[silviodonato]

We are getting a compilation warning since

>> Compiling  /data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw/slc7_amd64_gcc900/cms/cmssw/CMSSW_12_0_X_2021-05-05-1100/src/EventFilter/Utilities/src/json_writer.cpp
/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/gcc/9.3.0/bin/c++ -c -DGNU_GCC -D_GNU_SOURCE -DTBB_USE_GLIBCXX_VERSION=90300 -DTBB_SUPPRESS_DEPRECATED_MESSAGES -DTBB_PREVIEW_RESUMABLE_TASKS=1 -DBOOST_SPIRIT_THREADSAFE -DPHOENIX_THREADSAFE -DBOOST_MATH_DISABLE_STD_FPCLASSIFY -DBOOST_UUID_RANDOM_PROVIDER_FORCE_POSIX -DCMSSW_GIT_HASH='CMSSW_12_0_X_2021-05-05-1100' -DPROJECT_NAME='CMSSW' -DPROJECT_VERSION='CMSSW_12_0_X_2021-05-05-1100' -I/data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw/slc7_amd64_gcc900/cms/cmssw/CMSSW_12_0_X_2021-05-05-1100/src -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/pcre/8.43-bcolbf/include -isystem/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/boost/1.75.0-ljfedo/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/bz2lib/1.0.6-bcolbf2/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/curl/7.70.0/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/libuuid/2.34-bcolbf2/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/openssl/1.0.2d-bcolbf/include -isystem/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/lcg/root/6.22.08-3eb26289177909873c4b2870fec263ac/include -isystem/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/tbb/v2021.2.0-753991d8cffbab375ded80d936d79020/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/xz/5.2.4-bcolbf2/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/zlib/1.2.11-bcolbf/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/zstd/1.4.5/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/fmt/7.0.1/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/md5/1.0.0-bcolbf2/include -I/data/cmsbld/jenkins/workspace/build-any-ib/w/slc7_amd64_gcc900/external/tinyxml2/6.2.0-ghbfee/include -O2 -pthread -pipe -Werror=main -Werror=pointer-arith -Werror=overlength-strings -Wno-vla -Werror=overflow -std=c++1z -ftree-vectorize -Wstrict-overflow -Werror=array-bounds -Werror=format-contains-nul -Werror=type-limits -fvisibility-inlines-hidden -fno-math-errno --param vect-max-version-for-alias-checks=50 -Xassembler --compress-debug-sections -msse3 -felide-constructors -fmessage-length=0 -Wall -Wno-non-template-friend -Wno-long-long -Wreturn-type -Wextra -Wpessimizing-move -Wclass-memaccess -Wno-cast-function-type -Wno-unused-but-set-parameter -Wno-ignored-qualifiers -Wno-deprecated-copy -Wno-unused-parameter -Wunused -Wparentheses -Wno-deprecated -Werror=return-type -Werror=missing-braces -Werror=unused-value -Werror=unused-label -Werror=address -Werror=format -Werror=sign-compare -Werror=write-strings -Werror=delete-non-virtual-dtor -Werror=strict-aliasing -Werror=narrowing -Werror=unused-but-set-variable -Werror=reorder -Werror=unused-variable -Werror=conversion-null -Werror=return-local-addr -Wnon-virtual-dtor -Werror=switch -fdiagnostics-show-option -Wno-unused-local-typedefs -Wno-attributes -Wno-psabi -Wno-error=unused-variable -DBOOST_DISABLE_ASSERTS -fdebug-prefix-map=/data/cmsbld/jenkins/workspace/build-any-ib/w=/opt/cmssw -fdebug-prefix-map=/data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw=/opt/cmssw -g  -fPIC  -MMD -MF tmp/slc7_amd64_gcc900/src/EventFilter/Utilities/src/EventFilterUtilities/json_writer.cpp.d /data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw/slc7_amd64_gcc900/cms/cmssw/CMSSW_12_0_X_2021-05-05-1100/src/EventFilter/Utilities/src/json_writer.cpp -o tmp/slc7_amd64_gcc900/src/EventFilter/Utilities/src/EventFilterUtilities/json_writer.cpp.o
/data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw/slc7_amd64_gcc900/cms/cmssw/CMSSW_12_0_X_2021-05-05-1100/src/EventFilter/Utilities/src/FedRawDataInputSource.cc: In member function 'void FedRawDataInputSource::readSupervisor()':
  /data/cmsbld/jenkins/workspace/build-any-ib/w/tmp/BUILDROOT/afbc9848c11ff4615f5f2ea84f2b0075/opt/cmssw/slc7_amd64_gcc900/cms/cmssw/CMSSW_12_0_X_2021-05-05-1100/src/EventFilter/Utilities/src/FedRawDataInputSource.cc:1186:27: warning: 'tid' may be used uninitialized in this function [-Wmaybe-uninitialized]
  1186 |     thread_quit_signal[tid] = true;
      |                           ^

https://cmssdt.cern.ch/SDT/cgi-bin/buildlogs/slc7_amd64_gcc900/CMSSW_12_0_X_2021-05-05-1100/EventFilter/Utilities

The origin of the error is #33474 which show

https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a7c094/14760/summary.html

[cmsbuild]

A new Issue was created by @silviodonato Silvio Donato.

@Dr15Jones, @dpiparo, @silviodonato, @smuzaffar, @makortel, @qliphy can you please review it and eventually sign/assign? Thanks.

cms-bot commands are listed here

[silviodonato]

assign core,externals

[cmsbuild]

New categories assigned: core,externals

@Dr15Jones,@smuzaffar,@smuzaffar,@mrodozov,@iarspider,@makortel you have been requested to review this Pull request/Issue and eventually sign? Thanks

[smuzaffar]

@silviodonato this has been fixed for 23h00 IB via #33631