From 18c6991d4a17fa4740c0e9fba4b07306e8a8d53e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikolai=20G=C3=BCtschow?= <mikolai.guetschow@tu-dresden.de>
Date: Mon, 25 Nov 2024 16:16:48 +0100
Subject: [PATCH] examples/arduino_hello-world: fix buffer overflow

---
 examples/arduino_hello-world/hello-world.sketch | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/arduino_hello-world/hello-world.sketch b/examples/arduino_hello-world/hello-world.sketch
index bdf414c0fd..436a96d097 100644
--- a/examples/arduino_hello-world/hello-world.sketch
+++ b/examples/arduino_hello-world/hello-world.sketch
@@ -25,8 +25,9 @@
 // Assign the default LED pin
 int ledPin = ARDUINO_LED;
 
+#define BUF_LEN 64
 // input buffer for receiving chars on the serial port
-int buf[64];
+int buf[BUF_LEN];
 
 // counter that counts the number of received chars
 int count = 0;
@@ -64,7 +65,7 @@ void loop(void)
             count = 0;
         }
         // else we just remember the incoming char
-        else {
+        else if (count < BUF_LEN) {
             buf[count++] = tmp;
         }
     }