ASAN does handle this. As nkurz noted, custom allocators need only poison/unpoison memory regions to benefit from ASAN and MSAN. For example see how the absl

ASAN does handle this. As nkurz noted, custom allocators need only poison/unpoison memory regions to benefit from ASAN and MSAN. For example see how the absl "SwissTable" does: https://github.com/abseil/abseil-cpp/blob/master/absl/container/internal/raw_hash_set.h#L1587 https://github.com/abseil/abseil-cpp/blob/master/absl/contai...