tools/nolibc: add test for __stack_chk_guard initialization

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

tools/testing/selftests/nolibc/nolibc-test.c

@@ -808,6 +808,14 @@ static int run_protection(int min, int max)
 	return 0;
 #endif
 
+#if defined(NOLIBC_STACKPROTECTOR)
+	if (!__stack_chk_guard) {
+		llen += printf("__stack_chk_guard not initialized");
+		pad_spc(llen, 64, "[FAIL]\n");
+		return 1;
+	}
+#endif
+
 	pid = -1;
 	pid = fork();