From ee4d705deade2e9d0cb719ba4bf9518b6d238117 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rik=20B=C3=A4hnemann?= <brik@ethz.ch>
Date: Mon, 23 Nov 2020 19:23:17 +0100
Subject: [PATCH 1/3] Expose head and tail functions.

---
 RingBufCPP.h | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/RingBufCPP.h b/RingBufCPP.h
index 2ad61cf..7ef5864 100644
--- a/RingBufCPP.h
+++ b/RingBufCPP.h
@@ -140,7 +140,15 @@ bool isEmpty() const
     return ret;
 }
 
-protected:
+/**
+* Returns the index in the array of the newest element
+* Return: index in array of element
+*/
+size_t getHead() const
+{
+  return _head;
+}
+
 /**
 * Calculates the index in the array of the oldest element
 * Return: index in array of element
@@ -150,6 +158,7 @@ size_t getTail() const
     return (_head + (MaxElements - _numElements))%MaxElements;
 }
 
+protected:
 
 // underlying array
 Type _buf[MaxElements];

From 738ab5d53d51996e9408de2ad9c851a2981a2a08 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rik=20B=C3=A4hnemann?= <brik@ethz.ch>
Date: Tue, 24 Nov 2020 22:55:34 +0100
Subject: [PATCH 2/3] Revert "Expose head and tail functions."

This reverts commit ee4d705deade2e9d0cb719ba4bf9518b6d238117.
---
 RingBufCPP.h | 11 +----------
 1 file changed, 1 insertion(+), 10 deletions(-)

diff --git a/RingBufCPP.h b/RingBufCPP.h
index 7ef5864..2ad61cf 100644
--- a/RingBufCPP.h
+++ b/RingBufCPP.h
@@ -140,15 +140,7 @@ bool isEmpty() const
     return ret;
 }
 
-/**
-* Returns the index in the array of the newest element
-* Return: index in array of element
-*/
-size_t getHead() const
-{
-  return _head;
-}
-
+protected:
 /**
 * Calculates the index in the array of the oldest element
 * Return: index in array of element
@@ -158,7 +150,6 @@ size_t getTail() const
     return (_head + (MaxElements - _numElements))%MaxElements;
 }
 
-protected:
 
 // underlying array
 Type _buf[MaxElements];

From cc35cbb413b2fac17c62da7d84d5aef3b8522429 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rik=20B=C3=A4hnemann?= <brik@ethz.ch>
Date: Wed, 25 Nov 2020 01:06:34 +0100
Subject: [PATCH 3/3] Empty pull.

---
 RingBufCPP.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/RingBufCPP.h b/RingBufCPP.h
index 2ad61cf..d1c3732 100644
--- a/RingBufCPP.h
+++ b/RingBufCPP.h
@@ -59,7 +59,10 @@ bool pull(Type *dest)
     {
         if (!isEmpty()) {
             tail = getTail();
-            *dest = _buf[tail];
+            if (dest)
+            {
+              *dest = _buf[tail];
+            }
             _numElements--;
 
             ret = true;