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Type: Bug
Resolution: Fixed
Priority: P3: Somewhat important
Fix Version/s: 6.5.4, 6.7.0 FF
Affects Version/s: dev
Component/s: Testing: qtestlib
Labels:
None

Commits:
3f2b54f0a (dev), c30dabc37 (tqtc/lts-6.5)

Description

While attempting to investigate a selftest failure in https://codereview.qt-project.org/c/qt/qtbase/+/501399/2#message-1a0f121a40d110a022842e69ef9a132c6ccace7f, I ran into an issue where a test failed because it expected no errors in the output, but ASAN produced warnings:

mitch@mitch-kubuntu:~/dev/qt-dev2-debug/qtbase$ ./tests/auto/testlib/selftests/tst_selftests "Scenario: Test output of the loggers is as expected" -c "Given: The QTestLog::Plain logger"
Filters: Scenario: Test output of the loggers is as expected

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tst_selftests is a Catch v2.13.10 host application.
Run with -? for options

-------------------------------------------------------------------------------
Scenario: Test output of the loggers is as expected
      Given: The QTestLog::Plain logger
  And given: The "benchlibcallgrind" subtest
-------------------------------------------------------------------------------
/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:1202
...............................................................................

/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:683: warning:
  Valgrind broken or not available. Not running benchlibcallgrind test!

-------------------------------------------------------------------------------
Scenario: Test output of the loggers is as expected
      Given: The QTestLog::Plain logger
  And given: The "keyboard" subtest
-------------------------------------------------------------------------------
/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:1202
...............................................................................

/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:794: FAILED:
  REQUIRE( errorOutput.isEmpty() )
with expansion:
  false
with messages:
  test := "keyboard"
  arguments := QList("-o", "-,txt")
  
=================================================================
  ==5840==ERROR: LeakSanitizer: detected memory leaks
  
Direct leak of 552 byte(s) in 3 object(s) allocated from:
      #0 0x7f583e6b4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7f58348d316f  (<unknown module>)
  
Direct leak of 520 byte(s) in 13 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348e4045  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x728045)
  
Direct leak of 184 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7f58348d316f  (<unknown module>)
      #2 0x140000000b  (<unknown module>)
  
Direct leak of 184 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7f58348d316f  (<unknown module>)
      #2 0xd00000004  (<unknown module>)
  
Direct leak of 67 byte(s) in 2 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348e08f3  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x7248f3)
  
Direct leak of 36 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4c38 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:164
      #1 0x7f58348e13f4  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x7253f4)
      #2 0x1200000009  (<unknown module>)
  
Direct leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348e7f3d  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x72bf3d)
  
Indirect leak of 1342 byte(s) in 7 object(s) allocated from:
      #0 0x7f583e6b4c38 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:164
      #1 0x7f58348e13f4  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x7253f4)
  
Indirect leak of 120 byte(s) in 3 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348d3272  (<unknown module>)
  
Indirect leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348e7f3d  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x72bf3d)
  
Indirect leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7f583e6b4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7f58348d872a  (<unknown module>)
  
SUMMARY: AddressSanitizer: 3077 byte(s) leaked in 34 allocation(s).

-------------------------------------------------------------------------------
Scenario: Test output of the loggers is as expected
      Given: The QTestLog::Plain logger
  And given: The "mouse" subtest
-------------------------------------------------------------------------------
/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:1202
...............................................................................

/home/mitch/dev/qt-dev2/qtbase/tests/auto/testlib/selftests/tst_selftests.cpp:794: FAILED:
  REQUIRE( errorOutput.isEmpty() )
with expansion:
  false
with messages:
  test := "mouse"
  arguments := QList("-o", "-,txt")
  
=================================================================
  ==5858==ERROR: LeakSanitizer: detected memory leaks
  
Direct leak of 552 byte(s) in 3 object(s) allocated from:
      #0 0x7fb29fab4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7fb295c9f16f  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x73b16f)
  
Direct leak of 520 byte(s) in 13 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295cb0045  (<unknown module>)
  
Direct leak of 184 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7fb295c9f16f  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x73b16f)
      #2 0x140000000b  (<unknown module>)
  
Direct leak of 184 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
      #1 0x7fb295c9f16f  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x73b16f)
      #2 0xd00000004  (<unknown module>)
  
Direct leak of 67 byte(s) in 2 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295cac8f3  (<unknown module>)
  
Direct leak of 36 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4c38 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:164
      #1 0x7fb295cad3f4  (<unknown module>)
      #2 0x1200000009  (<unknown module>)
  
Direct leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295cb3f3d  (<unknown module>)
  
Indirect leak of 1342 byte(s) in 7 object(s) allocated from:
      #0 0x7fb29fab4c38 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:164
      #1 0x7fb295cad3f4  (<unknown module>)
  
Indirect leak of 120 byte(s) in 3 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295c9f272  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x73b272)
  
Indirect leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295cb3f3d  (<unknown module>)
  
Indirect leak of 24 byte(s) in 1 object(s) allocated from:
      #0 0x7fb29fab4887 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:145
      #1 0x7fb295ca472a  (/usr/lib/x86_64-linux-gnu/libasan.so.6.0.0+0x74072a)
  
SUMMARY: AddressSanitizer: 3077 byte(s) leaked in 34 allocation(s).

===============================================================================
test cases:   1 |   0 passed | 1 failed
assertions: 382 | 380 passed | 2 failed

Test outputs left in /tmp/tst_selftests.RCxaKQ

Running a specific subtest works:

mitch@mitch-kubuntu:~/dev/qt-dev2-debug/qtbase$ ./tests/auto/testlib/selftests/tst_selftests "Scenario: Test output of the loggers is as expected" -c "Given: The QTestLog::Plain logger" -c 'And given: The "cmptest" subtest'
Filters: Scenario: Test output of the loggers is as expected
===============================================================================
All tests passed (6 assertions in 1 test case)

I've exported an environment variable in ~/.profile that silences ASAN's memory leak warnings, which I've verified is picked up by the shell I'm running the tests from:

mitch@mitch-kubuntu:~/dev/qt-dev2-debug/qtbase$ env | grep ASAN
ASAN_OPTIONS=detect_leaks=0,new_delete_type_mismatch=0

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Assignee:: Mitch Curtis

Reporter:: Mitch Curtis

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Dates

Created:: 12 Oct '23 05:39

Updated:: 20 Oct '23 04:34

Resolved:: 16 Oct '23 15:25

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selftests: respect ASAN_OPTIONS: Gerrit Review:

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