Add "override" for overridden virtual functions

Add "override" for overridden virtual functions.
Please refer following issue for discussion on this.
https://github.com/google/protobuf/issues/67

1 files changed, 13 insertions, 0 deletions

diff --git a/src/google/protobuf/map_entry.h b/src/google/protobuf/map_entry.h
index 801def97..f25b5834 100644
--- a/src/google/protobuf/map_entry.h
+++ b/src/google/protobuf/map_entry.h
@@ -95,6 +95,19 @@ class MapEntry
   typedef void InternalArenaConstructable_;
   typedef void DestructorSkippable_;
 
+  using typename MapEntryImpl<Derived, Message, Key, Value, kKeyFieldType,
+                              kValueFieldType,
+                              default_enum_value>::KeyTypeHandler;
+  using typename MapEntryImpl<Derived, Message, Key, Value, kKeyFieldType,
+                              kValueFieldType,
+                              default_enum_value>::ValueTypeHandler;
+  size_t SpaceUsedLong() const override {
+    size_t size = sizeof(Derived);
+    size += KeyTypeHandler::SpaceUsedInMapEntryLong(this->key_);
+    size += ValueTypeHandler::SpaceUsedInMapEntryLong(this->value_);
+    return size;
+  }
+
   InternalMetadataWithArena _internal_metadata_;
 
  private: