Fix: Null pointer of table and vector_mgr when the result is null

vearch · Jun 19, 2023 · dfcb620 · dfcb620
1 parent 8e17955
commit dfcb620
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/engine/c_api/api_data/gamma_response.cc b/engine/c_api/api_data/gamma_response.cc
@@ -37,6 +37,11 @@ int Response::Serialize(std::vector<std::string> &fields_name, char **out,
   std::map<std::string, int> attr_idx;
   Table *table = static_cast<Table *>(table_);
   VectorManager *vector_mgr = static_cast<VectorManager *>(vector_mgr_);
+  // empty result
+  if (table == nullptr || vector_mgr == nullptr) {
+    LOG(INFO) << "nullptr: table=" << table << ", vector_mgr=" << vector_mgr;
+    return 0;
+  }
   const auto &attr_idx_map = table->FieldMap();
 
   if (fields_name.size()) {