Use <cstddef> for NULL

[platform/core/uifw/dali-core.git] / dali / public-api / signals / callback.h

diff --git a/dali/public-api/signals/callback.h b/dali/public-api/signals/callback.h
index ca266de..576f88d 100644 (file)
--- a/dali/public-api/signals/callback.h
+++ b/dali/public-api/signals/callback.h
@@ -18,6 +18,9 @@
  *
  */
 
+// EXTERNAL INCLUDES
+#include <cstddef>
+
 // INTERNAL INCLUDES
 #include <dali/public-api/common/dali-common.h>
 #include <dali/public-api/signals/functor-delegate.h>