re_string_realloc_buffers
ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2);
static reg_errcode_t re_string_realloc_buffers (re_string_t *pstr,
ret = re_string_realloc_buffers (pstr, init_buf_len);
ret = re_string_realloc_buffers (pstr, len + 1);
ret = re_string_realloc_buffers (pstr,