Index: uspace/lib/posix/common.h
===================================================================
--- uspace/lib/posix/common.h	(revision 0e23f4387ed09bd2c67b0cfc775c6d52b937ff91)
+++ uspace/lib/posix/common.h	(revision 339f223126caa173d7b9a9b3db00f412f160825c)
@@ -31,4 +31,5 @@
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #define not_implemented() (fprintf(stderr, "Function %s() in file %s at line %d is not implemented\n", __func__, __FILE__, __LINE__), abort())