Check arguments count

dbms/src/Functions/runningAccumulate.cpp

@@ -15,6 +15,7 @@ namespace ErrorCodes
 {
     extern const int ILLEGAL_COLUMN;
     extern const int ILLEGAL_TYPE_OF_ARGUMENT;
+    extern const int NUMBER_OF_ARGUMENTS_DOESNT_MATCH;
 }
 
 
@@ -71,6 +72,10 @@ public:
     {
         size_t number_of_arguments = arguments.size();
 
+        if (number_of_arguments == 0)
+            throw Exception("Incorrect number of arguments of function " + getName() + ". Must be 1 or 2.",
+                ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
+
         const ColumnAggregateFunction * column_with_states
             = typeid_cast<const ColumnAggregateFunction *>(&*block.getByPosition(arguments.at(0)).column);