Why LeakSanitizer reports memory leak when hashtable rehash? (gcc (GCC) 11.2.0)

[SeulYoung]

This is the report information for the memory leak, it seems to be incomplete:

80 Direct leak of 38712 byte(s) in 3 object(s) allocated from:
81 #0 0x7fe413887ac4 in operator new(unsigned long) ../../../../gcc-11.2.0/libsanitizer/lsan/lsan_interceptors.cpp:238
82 #1 0x27b94df in std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<unsigned long const, unsigned int>, false> > >::_M_allocate_buckets(unsigned long) /opt/rh/ devtoolset-9/root/usr/include/c++/9/ext/new_allocator.h:114
83 #2 0x27b94df in std::_Hashtable<unsigned long, std::pair<unsigned long const, unsigned int>, std::allocator<std::pair<unsigned long const, unsigned int> >, std::__detail::_Select1st, std::eq ual_to, std::hash, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<fal se, false, true> >::_M_allocate_buckets(unsigned long) /opt/rh/devtoolset-9/root/usr/include/c++/9/bits/hashtable.h:361
84 #3 0x27b94df in std::_Hashtable<unsigned long, std::pair<unsigned long const, unsigned int>, std::allocator<std::pair<unsigned long const, unsigned int> >, std::__detail::_Select1st, std::eq ual_to, std::hash, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<fal se, false, true> >::_M_rehash_aux(unsigned long, std::integral_constant<bool, true>) /opt/rh/devtoolset-9/root/usr/include/c++/9/bits/hashtable.h:2088
85 #4 0x27b94df in std::_Hashtable<unsigned long, std::pair<unsigned long const, unsigned int>, std::allocator<std::pair<unsigned long const, unsigned int> >, std::__detail::_Select1st, std::eq ual_to, std::hash, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<fal se, false, true> >::_M_rehash(unsigned long, unsigned long const&) /opt/rh/devtoolset-9/root/usr/include/c++/9/bits/hashtable.h:2067
86
87 Objects leaked above:
88 0x627000003800 (12904 bytes)
89 0x627000007000 (12904 bytes)
90 0x62700000a800 (12904 bytes)