Configure with -sanitize address, build and then run tst_qsensor. Here is the output:
********* Start testing of tst_QSensor *********
Config: Using QtTest library 6.5.0, Qt 6.5.0 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 9.3.1 20200406 [revision 6db837a5288ee3ca5ec504fbd5a765817e556ac2]), opensuse-leap 15.3
PASS   : tst_QSensor::initTestCase()
PASS   : tst_QSensor::testRecursiveLoadPlugins()
PASS   : tst_QSensor::testTypeRegistered()
PASS   : tst_QSensor::testSensorRegistered()
PASS   : tst_QSensor::testSensorDefault()
PASS   : tst_QSensor::testBadDefaultFromConfig()
PASS   : tst_QSensor::testGoodDefaultFromConfig()
PASS   : tst_QSensor::testNoSensorsForType()
PASS   : tst_QSensor::testNoDefaultForType()
PASS   : tst_QSensor::testCreation()
PASS   : tst_QSensor::testSetIdentifierFail()
PASS   : tst_QSensor::testBadDefaultCreation()
PASS   : tst_QSensor::testBadCreation()
QWARN  : tst_QSensor::testTimestamp() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testTimestamp()
QWARN  : tst_QSensor::testStart() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testStart()
PASS   : tst_QSensor::testBadStart()
QWARN  : tst_QSensor::testStop() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testStop()
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
QWARN  : tst_QSensor::testMetaData() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testMetaData()
QWARN  : tst_QSensor::testFilter() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testFilter()
QWARN  : tst_QSensor::testFilter2() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testFilter2()
QWARN  : tst_QSensor::testFilter3() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testFilter3()
QWARN  : tst_QSensor::testStart2() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testStart2()
QWARN  : tst_QSensor::testSetBadDataRate() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testSetBadDataRate()
QWARN  : tst_QSensor::testSetBadDataRateWhenNotConnected() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testSetBadDataRateWhenNotConnected()
QWARN  : tst_QSensor::testSetBadOutputRange() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testSetBadOutputRange()
QWARN  : tst_QSensor::testSetBadOutputRangeWhenNotConnected() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testSetBadOutputRangeWhenNotConnected()
PASS   : tst_QSensor::testEnumHandling()
PASS   : tst_QSensor::testDynamicDefaultsAndGenericHandling()
PASS   : tst_QSensor::testCreation2()
PASS   : tst_QSensor::testSensorsChangedSignal()
QWARN  : tst_QSensor::testSetActive() Can't create backend "test sensor 2"
PASS   : tst_QSensor::testSetActive()
PASS   : tst_QSensor::testAlwaysOn()
PASS   : tst_QSensor::testIsRegistered()
PASS   : tst_QSensor::testAllTheInterfaces()
=================================================================
==7772==ERROR: AddressSanitizer: new-delete-type-mismatch on 0x602000003730 in thread T0:
  object passed to delete has wrong type:
  size of the allocated type:   16 bytes;
  size of the deallocated type: 8 bytes.
    #0 0x7f92d7af1e45 in operator delete(void*, unsigned long) (/usr/lib64/libasan.so.5+0x10ce45)
    #1 0x7f92d73d9c40  (/home/qt/work/install/lib/libQt6Sensors.so.6+0x87c40)
    #2 0x7f92d73d933b  (/home/qt/work/install/lib/libQt6Sensors.so.6+0x8733b)
    #3 0x7f92d73d7fcc in QSensorReading::~QSensorReading() (/home/qt/work/install/lib/libQt6Sensors.so.6+0x85fcc)
    #4 0x42ba1c in TestSensor2Reading::~TestSensor2Reading() /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2.cpp:29
    #5 0x42cb24 in testsensor2impl::~testsensor2impl() /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2impl.h:10
    #6 0x42cb4b in testsensor2impl::~testsensor2impl() /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2impl.h:10
    #7 0x7f92d73d613b in QSensor::~QSensor() (/home/qt/work/install/lib/libQt6Sensors.so.6+0x8413b)
    #8 0x42c17c in TestSensor2::~TestSensor2() /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2.h:66
    #9 0x44ad1e in tst_QSensor::testReadingBC() /home/qt/work/qt/qtsensors/tests/auto/qsensor/tst_qsensor.cpp:877
    #10 0x431802 in tst_QSensor::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) tests/auto/qsensor/tst_qsensor_autogen/include/tst_qsensor.moc:394
    #11 0x7f92d627035e in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const (/home/qt/work/install/lib/libQt6Core.so.6+0x40d35e)
    #12 0x7f92d76e499c  (/home/qt/work/install/lib/libQt6Test.so.6+0xab99c)
    #13 0x7f92d76c7a60  (/home/qt/work/install/lib/libQt6Test.so.6+0x8ea60)
    #14 0x7f92d76ca47a  (/home/qt/work/install/lib/libQt6Test.so.6+0x9147a)
    #15 0x7f92d76cdc2e  (/home/qt/work/install/lib/libQt6Test.so.6+0x94c2e)
    #16 0x7f92d76d0d2a in QTest::qRun() (/home/qt/work/install/lib/libQt6Test.so.6+0x97d2a)
    #17 0x7f92d76cfaab in QTest::qExec(QObject*, int, char**) (/home/qt/work/install/lib/libQt6Test.so.6+0x96aab)
    #18 0x431481 in main /home/qt/work/qt/qtsensors/tests/auto/qsensor/tst_qsensor.cpp:977
    #19 0x7f92d4f2634c in __libc_start_main (/lib64/libc.so.6+0x2534c)
    #20 0x410909 in _start (/home/qt/work/qt/qtsensors_standalone_tests/tests/auto/qsensor/tst_qsensor+0x410909)
0x602000003730 is located 0 bytes inside of 16-byte region [0x602000003730,0x602000003740)
allocated by thread T0 here:
    #0 0x7f92d7af09bf in operator new(unsigned long) (/usr/lib64/libasan.so.5+0x10b9bf)
    #1 0x42b960 in TestSensor2Reading::TestSensor2Reading(QObject*) /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2.cpp:29
    #2 0x42c5c8 in testsensor2impl::testsensor2impl(QSensor*) /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensor2impl.cpp:11
    #3 0x42f803 in TestSensorPlugin::createBackend(QSensor*) /home/qt/work/qt/qtsensors/tests/auto/qsensor/test_sensorplugin.cpp:64
    #4 0x7f92d73ad961 in QSensorManager::createBackend(QSensor*) (/home/qt/work/install/lib/libQt6Sensors.so.6+0x5b961)
    #5 0x7f92d73d6635 in QSensor::connectToBackend() (/home/qt/work/install/lib/libQt6Sensors.so.6+0x84635)
    #6 0x7f92d73d6cad in QSensor::start() (/home/qt/work/install/lib/libQt6Sensors.so.6+0x84cad)
    #7 0x44a9d5 in tst_QSensor::testReadingBC() /home/qt/work/qt/qtsensors/tests/auto/qsensor/tst_qsensor.cpp:868
    #8 0x431802 in tst_QSensor::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) tests/auto/qsensor/tst_qsensor_autogen/include/tst_qsensor.moc:394
    #9 0x7f92d627035e in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const (/home/qt/work/install/lib/libQt6Core.so.6+0x40d35e)
    #10 0x7f92d76e499c  (/home/qt/work/install/lib/libQt6Test.so.6+0xab99c)
    #11 0x7f92d76c7a60  (/home/qt/work/install/lib/libQt6Test.so.6+0x8ea60)
    #12 0x7f92d76ca47a  (/home/qt/work/install/lib/libQt6Test.so.6+0x9147a)
    #13 0x7f92d76cdc2e  (/home/qt/work/install/lib/libQt6Test.so.6+0x94c2e)
    #14 0x7f92d76d0d2a in QTest::qRun() (/home/qt/work/install/lib/libQt6Test.so.6+0x97d2a)
    #15 0x7f92d76cfaab in QTest::qExec(QObject*, int, char**) (/home/qt/work/install/lib/libQt6Test.so.6+0x96aab)
    #16 0x431481 in main /home/qt/work/qt/qtsensors/tests/auto/qsensor/tst_qsensor.cpp:977
    #17 0x7f92d4f2634c in __libc_start_main (/lib64/libc.so.6+0x2534c)
SUMMARY: AddressSanitizer: new-delete-type-mismatch (/usr/lib64/libasan.so.5+0x10ce45) in operator delete(void*, unsigned long)
==7772==HINT: if you don't care about these errors you may set ASAN_OPTIONS=new_delete_type_mismatch=0
==7772==ABORTING
| For Gerrit Dashboard: QTBUG-105173 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V | 
| 458388,2 | Remove ASAN warning on qsensor autotest | dev | qt/qtsensors | Status: MERGED | +2 | 0 | 
| 460009,2 | Remove ASAN warning on qsensor autotest | 6.5 | qt/qtsensors | Status: MERGED | +2 | 0 |