Non-timeout hang in unit tests
Created by: NAThompson
Describe the bug
I ran the unit tests overnight, and found that test 459 hangs:
449/606 Test #449: Staging.FtoC.1x1.CommPeer.BP.SST .......................................................***Timeout 30.04 sec
Start 450: Staging.CtoF.1x1.CommPeer.BP.SST
450/606 Test #450: Staging.CtoF.1x1.CommPeer.BP.SST .......................................................***Timeout 30.04 sec
Start 451: Staging.FtoF.1x1.CommPeer.BP.SST
451/606 Test #451: Staging.FtoF.1x1.CommPeer.BP.SST .......................................................***Failed 0.09 sec
Start 452: Staging.ZFPCompression.1x1.CommPeer.BP.SST
452/606 Test #452: Staging.ZFPCompression.1x1.CommPeer.BP.SST ............................................. Passed 0.28 sec
Start 453: Staging.ZFPCompression.3x5.CommPeer.BP.SST
453/606 Test #453: Staging.ZFPCompression.3x5.CommPeer.BP.SST ............................................. Passed 0.38 sec
Start 454: Staging.TimeoutReader.1x1.CommPeer.BP.SST
454/606 Test #454: Staging.TimeoutReader.1x1.CommPeer.BP.SST .............................................. Passed 20.38 sec
Start 455: Staging.LatestReader.1x1.CommPeer.BP.SST
455/606 Test #455: Staging.LatestReader.1x1.CommPeer.BP.SST ............................................... Passed 15.23 sec
Start 456: Staging.LatestReaderHold.1x1.CommPeer.BP.SST
456/606 Test #456: Staging.LatestReaderHold.1x1.CommPeer.BP.SST ........................................... Passed 17.75 sec
Start 457: Staging.DiscardWriter.1x1.CommPeer.BP.SST
457/606 Test #457: Staging.DiscardWriter.1x1.CommPeer.BP.SST .............................................. Passed 12.46 sec
Start 458: Staging.PreciousTimestep.3x2.CommPeer.BP.SST
458/606 Test #458: Staging.PreciousTimestep.3x2.CommPeer.BP.SST ........................................... Passed 60.41 sec
Start 459: Staging.PreciousTimestepDiscard.3x2.CommPeer.BP.SST
(The printout doesn't clearly show what's happening: Test 459 starts, but never finishes.)
To Reproduce
Build sequence:
ADIOS2/build$ cmake -DCMAKE_CXX_FLAGS="-fsanitize=address -fsanitize=undefined" -DADIOS2_USE_MPI=OFF -DCMAKE_BUILD_TYPE=Debug ../
ADIOS2/build$ make -j `nproc`
ADIOS2/build$ ctest
- OS: Ubuntu 18.04