Index: uspace/lib/c/include/macros.h
===================================================================
--- uspace/lib/c/include/macros.h	(revision f8d43aaa6d788d9c69da1ce5abb8dfc69acc7a0d)
+++ uspace/lib/c/include/macros.h	(revision 0816c2ed8cea6aebeafa8a2f76de2d8e87f32b26)
@@ -40,4 +40,5 @@
 #define abs(a)     ((a) >= 0 ? (a) : (-a))
 
+#define ARRAY_SIZE(array)   (sizeof(array) / sizeof(array[0]))
 
 #define KiB2SIZE(kb)  ((kb) << 10)