assert_se(sd_journal_get_data(j, "NUMBER", &data, &l) >= 0);
printf("\t%.*s\n", (int) l, (const char*) data);
assert_se(sd_journal_get_cursor(j, &c) >= 0);
assert_se(sd_journal_test_cursor(j, c) > 0);
assert_se(sd_journal_get_data(j, "NUMBER", &data, &l) >= 0);
printf("\t%.*s\n", (int) l, (const char*) data);
assert_se(sd_journal_get_cursor(j, &c) >= 0);
assert_se(sd_journal_test_cursor(j, c) > 0);