MDB_MAXKEYSIZE = 0 (dynamic value) when MDB_DEVEL

diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index 6284edccd13753a0dd6a8ffa415461d8c1d3410f..2b41c2e2ddadb9ff6a441a3ff1ea75d5d41dc1ef 100644 (file)
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -427,13 +427,14 @@ static txnid_t mdb_debug_start;
         *      Define this as 0 to compute the max from the page size.  511
         *      is default for backwards compat: liblmdb <= 0.9.10 can break
         *      when modifying a DB with keys/dupsort data bigger than its max.
+        *      #MDB_DEVEL sets the default to 0.
         *
         *      Data items in an #MDB_DUPSORT database are also limited to
         *      this size, since they're actually keys of a sub-DB.  Keys and
         *      #MDB_DUPSORT data items must fit on a node in a regular page.
         */
 #ifndef MDB_MAXKEYSIZE
-#define MDB_MAXKEYSIZE  511
+#define MDB_MAXKEYSIZE  ((MDB_DEVEL) ? 0 : 511)
 #endif
 
        /**     The maximum size of a key we can write to the environment. */