ITS#8336 fix page_search_root assert on FreeDB

Let "illegal" branch pages thru on the FreeDB - the condition
is only temporary and will be fixed by the time rebalance finishes.

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index fa0c9e5b9ccd1f2ba6df9daba40bcf3258eee3aa..a624cba3c4f0418c9ab142b1d7032e78b8985ea6 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -5279,7 +5279,11 @@ mdb_page_search_root(MDB_cursor *mc, MDB_val *key, int flags)
                indx_t          i;
 
                DPRINTF(("branch page %"Z"u has %u keys", mp->mp_pgno, NUMKEYS(mp)));
-               mdb_cassert(mc, NUMKEYS(mp) > 1);
+               /* Don't assert on branch pages in the FreeDB. We can get here
+                * while in the process of rebalancing a FreeDB branch page; we must
+                * let that proceed. ITS#8336
+                */
+               mdb_cassert(mc, !mc->mc_dbi || NUMKEYS(mp) > 1);
                DPRINTF(("found index 0 to page %"Z"u", NODEPGNO(NODEPTR(mp, 0))));
 
                if (flags & (MDB_PS_FIRST|MDB_PS_LAST)) {