File 0001-ITS-8336-fix-page_search_root-assert-on-FreeDB.patch of Package lmdb.13642
From 58d1fd4c73c96ef3097816e975b3d421ead4d86e Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@openldap.org>
Date: Tue, 8 Dec 2015 18:17:24 +0000
Subject: [PATCH] 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.
---
libraries/liblmdb/mdb.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 0c93c37..c603654 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -5434,7 +5434,11 @@ 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)) {
--
2.24.0
