fake_core: Check if hard fork subdbs need reset at start

1 files changed, 8 insertions, 2 deletions

diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp
index 541e838f7..5982b9d9a 100644
--- a/src/blockchain_db/lmdb/db_lmdb.cpp
+++ b/src/blockchain_db/lmdb/db_lmdb.cpp
@@ -2450,8 +2450,14 @@ void BlockchainLMDB::check_hard_fork_info()
     throw0(DB_ERROR("Failed to query m_hf_starting_heights"));
   if (db_stat1.ms_entries != db_stat2.ms_entries)
   {
-    mdb_drop(*txn_ptr, m_hf_starting_heights, 1);
-    mdb_drop(*txn_ptr, m_hf_versions, 1);
+    // Empty, but don't delete. This allows this function to be called after
+    // startup, after the subdbs have already been created, and rest of startup
+    // can proceed. If these don't exist, hard fork's init() will fail.
+    //
+    // If these are empty, hard fork's init() will repopulate the hard fork
+    // data.
+    mdb_drop(*txn_ptr, m_hf_starting_heights, 0);
+    mdb_drop(*txn_ptr, m_hf_versions, 0);
   }
 
   TXN_POSTFIX_SUCCESS();