From c9352f0785425a7de6388399a63bc29e0fee1368 Mon Sep 17 00:00:00 2001
From: Hannes Kuchelmeister <hannes@kuchelmeister.org>
Date: Sat, 2 Jan 2021 16:35:03 +0100
Subject: [PATCH] fix segmentation fault by removing Node* in subclasses

---
 Assignment_2/lib/FineList.cpp       | 7 +++----
 Assignment_2/lib/LazyList.cpp       | 1 -
 Assignment_2/lib/MultiSet.cpp       | 1 -
 Assignment_2/lib/OptimisticList.cpp | 1 -
 4 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/Assignment_2/lib/FineList.cpp b/Assignment_2/lib/FineList.cpp
index 9aa44d4..3450611 100644
--- a/Assignment_2/lib/FineList.cpp
+++ b/Assignment_2/lib/FineList.cpp
@@ -1,12 +1,9 @@
-#pragma once
-
 #include <bits/stdc++.h>
 
 #include"Node.h"
 #include"Set.h"
 
 class FineSet:public Set {
-    Node* first;
     public:
         FineSet();
         bool add(int element);
@@ -17,11 +14,13 @@ class FineSet:public Set {
 FineSet::FineSet() : Set("FineSet") { }
 
 bool FineSet::add(int element) {
-    this->first->lock();
+    first->lock();
+    return true;
     Node* p = this->first;
     Node* c = p->next;
     c->lock();
     while (c->is_smaller_than(element)) {
+        std::cout << "C: "<< c->next << std::endl;
         p->unlock();
         p = c;
         c = c->next;
diff --git a/Assignment_2/lib/LazyList.cpp b/Assignment_2/lib/LazyList.cpp
index 624ade6..c98b6d7 100644
--- a/Assignment_2/lib/LazyList.cpp
+++ b/Assignment_2/lib/LazyList.cpp
@@ -5,7 +5,6 @@
 
 class LazySet:public Set {
     protected:
-        Node* first;
         void locate(int element, Node* prev, Node* cur);
     
     public:
diff --git a/Assignment_2/lib/MultiSet.cpp b/Assignment_2/lib/MultiSet.cpp
index fb6de26..e14d58e 100644
--- a/Assignment_2/lib/MultiSet.cpp
+++ b/Assignment_2/lib/MultiSet.cpp
@@ -4,7 +4,6 @@
 #include"Set.h"
 
 class MultiSet:public Set {
-    Node* first;
     public:
         MultiSet();
         bool add(int element);
diff --git a/Assignment_2/lib/OptimisticList.cpp b/Assignment_2/lib/OptimisticList.cpp
index 3a1535b..52f070f 100644
--- a/Assignment_2/lib/OptimisticList.cpp
+++ b/Assignment_2/lib/OptimisticList.cpp
@@ -5,7 +5,6 @@
 
 class OptimisticSet:public Set {
     protected:
-        Node* first;
         bool validate(Node* p, Node* c);
     public:
         OptimisticSet();