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Fix mdb_rebalance

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Don't do anything with (fake root) subpages
This commit is contained in:
Howard Chu 2013-04-17 14:33:41 -07:00
parent aca6c08897
commit dbb9ded2f8
1 changed files with 4 additions and 0 deletions
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4
libraries/liblmdb/mdb.c
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@ -6320,6 +6320,10 @@ mdb_rebalance(MDB_cursor *mc)
if (mc->mc_snum < 2) { if (mc->mc_snum < 2) {
MDB_page *mp = mc->mc_pg[0]; MDB_page *mp = mc->mc_pg[0];
if (IS_SUBP(mp)) {
DPUTS("Can't rebalance a subpage, ignoring");
return MDB_SUCCESS;
}
if (NUMKEYS(mp) == 0) { if (NUMKEYS(mp) == 0) {
DPUTS("tree is completely empty"); DPUTS("tree is completely empty");
mc->mc_db->md_root = P_INVALID; mc->mc_db->md_root = P_INVALID;