Fix segfault

2019-12-03 02:27:25 +03:00
parent 1f7381e220
commit a2ed38fb6b
1 changed files with 2 additions and 1 deletions
@@ -89,7 +89,8 @@ int blockstore::dequeue_read(blockstore_operation *read_op)
        .oid = read_op->oid,
        .version = UINT64_MAX,
    });
-    dirty_it--;
+    if (dirty_it != dirty_db.begin())
+        dirty_it--;
    bool clean_found = clean_it != clean_db.end();
    bool dirty_found = (dirty_it != dirty_db.end() && dirty_it->first.oid == read_op->oid);
    if (!clean_found && !dirty_found)