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Memory leak under Ubuntu 26.04 #31

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Memory leak under Ubuntu 26.04#31
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opened on Oct 14, 2026

ASAN detects a small memory leak. It may come from libgit2, but that would need to be verified:

==3979==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x7ab5a3129ddf in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:67
    #1 0x7ab5a2dbd0a3  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x190a3) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #2 0x7ab5a2dbf524  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b524) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #3 0x7ab5a2dbf621 in git_error_set (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b621) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #4 0x7ab5a2e3c08e  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9808e) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #5 0x7ab5a2e42cb8 in git_odb_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9ecb8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #6 0x7ab5a2e717f8 in git_repository__cleanup (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd7f8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #7 0x7ab5a2e71865 in git_repository_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd865) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #8 0x7ab5a2ea1217  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xfd217) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #9 0x7ab5a2e6e5bc in git_remote_disconnect (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca5bc) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #10 0x7ab5a2e6e619 in git_remote_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca619) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #11 0x637adc6c4148 in std::unique_ptr<git_remote, void (*)(git_remote*)>::~unique_ptr() /usr/include/c++/15/bits/unique_ptr.h:398
    #12 0x637adc6c2aaf in git::Remote::~Remote() ../include/libgit4cpp/Remote.h:44
    #13 0x637adc6bfb06 in CATCH2_INTERNAL_TEST_2 ../tests/test_Remote.cc:105
    #14 0x637adc741010 in invoke ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_test_registry.cpp:60
    #15 0x637adc7219cb in Catch::TestCaseHandle::invoke() const ../subprojects/Catch2-3.8.1/src/catch2/catch_test_case_info.hpp:124
    #16 0x637adc71eba0 in Catch::RunContext::invokeActiveTestCase() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:580
    #17 0x637adc71e4da in Catch::RunContext::runCurrentTest() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:543
    #18 0x637adc719682 in Catch::RunContext::runTest(Catch::TestCaseHandle const&) ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:240
    #19 0x637adc7b4ffd in execute ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:117
    #20 0x637adc7b7c61 in Catch::Session::runInternal() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:337
    #21 0x637adc7b71fa in Catch::Session::run() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:269
    #22 0x637adc6bbed7 in int Catch::Session::run<char>(int, char const* const*) ../subprojects/Catch2-3.8.1/src/catch2/catch_session.hpp:41
    #23 0x637adc6bb68a in main ../tests/test_main.cc:39
    #24 0x7ab5a262a8c0  (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a8c0) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #25 0x7ab5a262a9d7 in __libc_start_main (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a9d7) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #26 0x637adc6b3e94 in _start (/home/runner/work/libgit4cpp/libgit4cpp/build.asan/tests/libgit4cpp_test+0x73e94) (BuildId: 0509800819a07fd34e63f448adf0ae793e58a0ae)

Direct leak of 48 byte(s) in 1 object(s) allocated from:
    #0 0x7ab5a3129ddf in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:67
    #1 0x7ab5a2dbd0a3  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x190a3) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #2 0x7ab5a2dbf4d4  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b4d4) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #3 0x7ab5a2dbf621 in git_error_set (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b621) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #4 0x7ab5a2e3c08e  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9808e) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #5 0x7ab5a2e42cb8 in git_odb_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9ecb8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #6 0x7ab5a2e717f8 in git_repository__cleanup (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd7f8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #7 0x7ab5a2e71865 in git_repository_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd865) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #8 0x7ab5a2ea1217  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xfd217) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #9 0x7ab5a2e6e5bc in git_remote_disconnect (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca5bc) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #10 0x7ab5a2e6e619 in git_remote_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca619) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #11 0x637adc6c4148 in std::unique_ptr<git_remote, void (*)(git_remote*)>::~unique_ptr() /usr/include/c++/15/bits/unique_ptr.h:398
    #12 0x637adc6c2aaf in git::Remote::~Remote() ../include/libgit4cpp/Remote.h:44
    #13 0x637adc6bfb06 in CATCH2_INTERNAL_TEST_2 ../tests/test_Remote.cc:105
    #14 0x637adc741010 in invoke ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_test_registry.cpp:60
    #15 0x637adc7219cb in Catch::TestCaseHandle::invoke() const ../subprojects/Catch2-3.8.1/src/catch2/catch_test_case_info.hpp:124
    #16 0x637adc71eba0 in Catch::RunContext::invokeActiveTestCase() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:580
    #17 0x637adc71e4da in Catch::RunContext::runCurrentTest() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:543
    #18 0x637adc719682 in Catch::RunContext::runTest(Catch::TestCaseHandle const&) ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:240
    #19 0x637adc7b4ffd in execute ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:117
    #20 0x637adc7b7c61 in Catch::Session::runInternal() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:337
    #21 0x637adc7b71fa in Catch::Session::run() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:269
    #22 0x637adc6bbed7 in int Catch::Session::run<char>(int, char const* const*) ../subprojects/Catch2-3.8.1/src/catch2/catch_session.hpp:41
    #23 0x637adc6bb68a in main ../tests/test_main.cc:39
    #24 0x7ab5a262a8c0  (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a8c0) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #25 0x7ab5a262a9d7 in __libc_start_main (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a9d7) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #26 0x637adc6b3e94 in _start (/home/runner/work/libgit4cpp/libgit4cpp/build.asan/tests/libgit4cpp_test+0x73e94) (BuildId: 0509800819a07fd34e63f448adf0ae793e58a0ae)

Indirect leak of 104 byte(s) in 1 object(s) allocated from:
    #0 0x7ab5a3128e9f in realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:81
    #1 0x7ab5a2dc1a7f  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1da7f) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #2 0x7ab5a2dbf332  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b332) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #3 0x7ab5a2dbf41e  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b41e) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #4 0x7ab5a2dbf621 in git_error_set (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x1b621) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #5 0x7ab5a2e3c08e  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9808e) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #6 0x7ab5a2e42cb8 in git_odb_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0x9ecb8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #7 0x7ab5a2e717f8 in git_repository__cleanup (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd7f8) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #8 0x7ab5a2e71865 in git_repository_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xcd865) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #9 0x7ab5a2ea1217  (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xfd217) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #10 0x7ab5a2e6e5bc in git_remote_disconnect (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca5bc) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #11 0x7ab5a2e6e619 in git_remote_free (/usr/lib/x86_64-linux-gnu/libgit2.so.1.9+0xca619) (BuildId: 68a0c2ee0ac7eeb746b2fd8754f3dc3b3c43f5c9)
    #12 0x637adc6c4148 in std::unique_ptr<git_remote, void (*)(git_remote*)>::~unique_ptr() /usr/include/c++/15/bits/unique_ptr.h:398
    #13 0x637adc6c2aaf in git::Remote::~Remote() ../include/libgit4cpp/Remote.h:44
    #14 0x637adc6bfb06 in CATCH2_INTERNAL_TEST_2 ../tests/test_Remote.cc:105
    #15 0x637adc741010 in invoke ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_test_registry.cpp:60
    #16 0x637adc7219cb in Catch::TestCaseHandle::invoke() const ../subprojects/Catch2-3.8.1/src/catch2/catch_test_case_info.hpp:124
    #17 0x637adc71eba0 in Catch::RunContext::invokeActiveTestCase() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:580
    #18 0x637adc71e4da in Catch::RunContext::runCurrentTest() ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:543
    #19 0x637adc719682 in Catch::RunContext::runTest(Catch::TestCaseHandle const&) ../subprojects/Catch2-3.8.1/src/catch2/internal/catch_run_context.cpp:240
    #20 0x637adc7b4ffd in execute ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:117
    #21 0x637adc7b7c61 in Catch::Session::runInternal() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:337
    #22 0x637adc7b71fa in Catch::Session::run() ../subprojects/Catch2-3.8.1/src/catch2/catch_session.cpp:269
    #23 0x637adc6bbed7 in int Catch::Session::run<char>(int, char const* const*) ../subprojects/Catch2-3.8.1/src/catch2/catch_session.hpp:41
    #24 0x637adc6bb68a in main ../tests/test_main.cc:39
    #25 0x7ab5a262a8c0  (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a8c0) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #26 0x7ab5a262a9d7 in __libc_start_main (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a9d7) (BuildId: 4ec69afdf3da96ce7388640dcd27c6d0c1b256ef)
    #27 0x637adc6b3e94 in _start (/home/runner/work/libgit4cpp/libgit4cpp/build.asan/tests/libgit4cpp_test+0x73e94) (BuildId: 0509800819a07fd34e63f448adf0ae793e58a0ae)

SUMMARY: AddressSanitizer: 200 byte(s) leaked in 3 allocation(s).
==============================================================================

Activity

  1. alt-graph
    added
    bugSomething isn't working
    on Oct 14, 2026
  2. alt-graph
    assigned
    Copilot
    and
    alt-graph
    on Oct 14, 2026
  3. Copilot
    linked a pull request that will close this issueKeep libgit2 initialized for the lifetime of a Remote to fix ASAN leak #32on Oct 14, 2026

  4. alt-graph commented on Oct 14, 2026

    @alt-graph
    alt-graph
    on Oct 14, 2026
    MemberAuthor

    Resolved by commit b3274f2.

  5. alt-graph
    closed this as completedon Oct 14, 2026
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