coredump with loop

[YelaShady]

Hi,I found that when the ART has only one key-value and loop it,it will core dump:
art::art table;
table.set("key1",1);
for(auto itor = table.begin(); itor != table.end(); itor++)
{
std::cout << itor.key() << std::endl;
std::cout << *itor << std::endl;
}