From cfebb456e41bfd337774bcc8dbbedb6e52d16a52 Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 13 Mar 2026 14:24:53 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=92=20[security=20fix]=20Initialize=20?=
 =?UTF-8?q?stateChanged=20in=20constructor?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

🎯 What:
Initialize the `stateChanged` member variable in the ABounce constructor.

⚠️ Risk:
The `stateChanged` variable was previously uninitialized, leading to undefined behavior. This could cause `risingEdge()` or `fallingEdge()` to return true incorrectly upon object creation if the memory contains non-zero data, potentially triggering erroneous logic in applications using this library.

🛡️ Solution:
Added `stateChanged = 0;` to the ABounce constructor in ABounce.cpp to ensure it starts in a known state.

Co-authored-by: prestalab <2825421+prestalab@users.noreply.github.com>
---
 ABounce.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ABounce.cpp b/ABounce.cpp
index b763225..ebf0d79 100644
--- a/ABounce.cpp
+++ b/ABounce.cpp
@@ -11,7 +11,8 @@ ABounce::ABounce(uint8_t pin,unsigned long interval_millis)
 	interval(interval_millis);
 	previous_millis = millis();
 	state = getButton(analogRead(pin));
-    this->pin = pin;
+	this->pin = pin;
+	stateChanged = 0;
 }
 
 int ABounce::getButton(int buttonValue)