Index: uspace/lib/libc/include/unistd.h
===================================================================
--- uspace/lib/libc/include/unistd.h	(revision 3a180ad98d71236e0d3c1e4125727af20f41097e)
+++ uspace/lib/libc/include/unistd.h	(revision ccf814f73c779a8626e11c6228a90af59620ace2)
@@ -61,5 +61,5 @@
 extern char *getcwd(char *buf, size_t);
 
-extern void _exit(int status);
+extern void _exit(int status) __attribute__ ((noreturn));
 extern void *sbrk(ssize_t incr);
 extern int usleep(unsigned long usec);