A student implementing an unsorted linked list implemented this method:1 void LinkedList::InsertAtEnd(int e) {Node *neo;4neo = new Node;neo->element = e;nullptr;6.neo->next =%3D7.if (nullptr == _head) {head = neo;}else {Node *ptr;8.6.%3D11121314for (ptr = _head; ptr != nullptr; ptr = ptr->next) {%3D%3D1516ptr->next= neo;1718 }When this code was tested, it was found to crash with a segmentation fault. What line generated the fault?

Segmentation Fault is the runtime problem that mainly because of the following reasons : Referring…

Answered: A student implementing an unsorted…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A student implementing an unsorted linked list implemented this method:
1 void LinkedList::InsertAtEnd(int e) {
Node *neo;
4
neo = new Node;
neo->element = e;
nullptr;
6.
neo->next =
%3D
7.
if (nullptr == _head) {
head = neo;
}
else {
Node *ptr;
8.
6.
%3D
11
12
13
14
for (ptr = _head; ptr != nullptr; ptr = ptr->next) {
%3D
%3D
15
16
ptr->next
= neo;
17
18 }
When this code was tested, it was found to crash with a segmentation fault. What line generated the fault?

Expert Solution

Segmentation Fault :

Segmentation Fault is the runtime problem that mainly because of the following reasons :
1. Referring to the null location.
2. Wrong-way of comparing the value with the null value.
3. Assigning an invalid location to the pointer variable.
Here, in this case for line number -> 8, the nullptr == _head.
This line gives the segmentation fault as the order of the test condition is not correct.
The correct test condition is _head == nullptr.

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