pitrou opened a new issue, #45270: URL: https://github.com/apache/arrow/issues/45270
### Describe the bug, including details regarding any error messages, version, and platform. The Valgrind CI job is sometimes polluted by mimalloc-related Valgrind errors, such as: https://github.com/ursacomputing/crossbow/actions/runs/12791589715/job/35660053477#step:7:3050 ``` [ RUN ] TestPrimitiveWriter/6.OptionalSpaced ==15960== Conditional jump or move depends on uninitialised value(s) ==15960== at 0x64C895D: mi_check_is_double_free (alloc.c:197) ==15960== by 0x64C95FA: mi_free (alloc.c:497) ==15960== by 0x640C95F: arrow::(anonymous namespace)::MimallocAllocator::DeallocateAligned(unsigned char*, long, long) (memory_pool.cc:430) ==15960== by 0x640D544: arrow::BaseMemoryPoolImpl<arrow::(anonymous namespace)::MimallocAllocator>::Free(unsigned char*, long, long) (memory_pool.cc:508) ==15960== by 0x6408C21: arrow::PoolBuffer::~PoolBuffer() (memory_pool.cc:851) ==15960== by 0x6408C50: arrow::PoolBuffer::~PoolBuffer() (memory_pool.cc:853) ==15960== by 0x496B651: operator() (unique_ptr.h:99) ==15960== by 0x496B651: std::unique_ptr<arrow::Buffer, std::default_delete<arrow::Buffer> >::~unique_ptr() (unique_ptr.h:404) [etc.] ``` Since Valgrind is probably not mimalloc-aware, we should simply disable mimalloc on Valgrind builds so that the system allocator is used. ### Component(s) C++, Continuous Integration -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
