@@ -12,10 +12,14 @@
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
 
+#import "macros.h"
+
+OF_ASSUME_NONNULL_BEGIN
+
 typedef struct of_block_literal_t {
 #ifdef __OBJC__
 	Class isa;
 #else
 	void *isa;
@@ -46,5 +50,7 @@
 	((__typeof__(__VA_ARGS__))_Block_copy((const void*)(__VA_ARGS__)))
 #endif
 #ifndef Block_release
 # define Block_release(...) _Block_release((const void*)(__VA_ARGS__))
 #endif
+
+OF_ASSUME_NONNULL_END