jubatus/jubatus — pull request #710 by kmaehashi (2014-03-07 04:27:34+00:00)
Title: use uint64_t instead of size_t to prevent overflow (#692)

Maximum value of `size_t` depends on CPU arch, so `document_count_` may overflow when models saved in 64-bit with more than 2^32 `document_count_` are loaded onto 32-bit.