Index: uspace/lib/libc/include/unistd.h
===================================================================
--- uspace/lib/libc/include/unistd.h	(revision 8be693bd3b2be89643a83f1cb8f433a701b8b269)
+++ uspace/lib/libc/include/unistd.h	(revision 552823e1d25affb3bd94ac1424382bfcf05e3c39)
@@ -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);