Same code in 5.1.x:
[openxs@centos percona-5.1]$ grep -rn 'range_end >= range_start' * Percona-Server/storage/innodb_plugin/log/log0online.c:1277: ut_ad(range_end >= range_start); ...
Same code in 5.1.x:
[openxs@centos percona-5.1]$ grep -rn 'range_end >= range_start' * Server/ storage/ innodb_ plugin/ log/log0online. c:1277: ut_ad(range_end >= range_start);
Percona-
...