Fix : Segmentation fault when running several witness nodes on the sa…

…me machine
peerplays-network · Feb 14, 2019 · 0109bc8 · 0109bc8 · bobinson · Feb 20, 2019
1 parent 2142bc4
commit 0109bc8
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/libraries/chain/db_getter.cpp b/libraries/chain/db_getter.cpp
@@ -94,7 +94,7 @@ node_property_object& database::node_properties()
 
 uint32_t database::last_non_undoable_block_num() const
 {
-   return head_block_num() - _undo_db.size();
+   return head_block_num() < _undo_db.size() ? 0 : head_block_num() - _undo_db.size();
 }
 
 } }