UNIV_SYNC_DEBUG build broken

[Laurynas Biveinis]

5.5:

[ 55%] Building C object storage/innobase/CMakeFiles/innobase.dir/ha/ha0ha.c.o
/home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/ha/ha0ha.c: In function ‘ha_insert_for_fold_func’:
/home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/ha/ha0ha.c:118:2: error: passing argument 1 of ‘rw_lock_own’ discards ‘volatile’ qualifier from pointer target type [-Werror]
In file included from /home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/include/btr0types.h:33:0,
                 from /home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/include/ha0ha.ic:28,
                 from /home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/include/ha0ha.h:233,
                 from /home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/ha/ha0ha.c:26:
/home/laurynas/percona/src/UNIV_SYNC_DEBUG-5.5/Percona-Server/storage/innobase/include/sync0rw.h:513:1: note: expected ‘struct rw_lock_t *’ but argument is of type ‘volatile struct rw_lock_t *’
cc1: all warnings being treated as errors
make[2]: *** [storage/innobase/CMakeFiles/innobase.dir/ha/ha0ha.c.o] Error 1
make[1]: *** [storage/innobase/CMakeFiles/innobase.dir/all] Error 2
make: *** [all] Error 2

[Laurynas Biveinis (laurynas-biveinis)]

A superficial fix is easy but investigating the adaptive hash index partition RW lock split would take a bit more time.

[Raghavendra D Prabhu (raghavendra-prabhu)]

Other than its declaration, it is not used as such in other
places like btr_search_drop_page_hash_index.

[Raghavendra D Prabhu (raghavendra-prabhu)]

This is not present (the volatile construct) upstream but seems to have been merged in rev 235.

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2876