Index: uspace/lib/c/include/macros.h
===================================================================
--- uspace/lib/c/include/macros.h	(revision 1af0424f4bdd8b1d2de465c503a469773f5dea56)
+++ uspace/lib/c/include/macros.h	(revision 80d5307d11ddd57d9786887c4fc48551425312f6)
@@ -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)