Index: kernel/generic/src/lib/str.c
===================================================================
--- kernel/generic/src/lib/str.c	(revision b2fa1204c76e1eaec329888181d281aac04ed61e)
+++ kernel/generic/src/lib/str.c	(revision e8f3637174ee81e0db825432009a87e6dfe325f0)
@@ -111,4 +111,5 @@
 #include <debug.h>
 #include <macros.h>
+#include <mm/slab.h>
 
 /** Check the condition if wchar_t is signed */
@@ -567,4 +568,5 @@
 	/* There must be space for a null terminator in the buffer. */
 	ASSERT(size > 0);
+	ASSERT(src != NULL);
 	
 	size_t src_off = 0;