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alice · Guest

Hi,
When I compiles the following program with g++, it gives the following
output:

[root@localhost C++]# g++ -o list list.C
list.C: In function `int main()':
list.C:116: jump to case label
list.C:110: crosses initialization of `std::string data'
list.C:120: jump to case label
list.C:110: crosses initialization of `std::string data'

Internal compiler error: Error reporting routines re-entered.
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.
[root@localhost C++]#

However, if I changes the template type to int in the statement
LinkedList<string> list( i.e. to change the statement to
LinkedList<int> list;),
then then program compiles properly. Can anybody help to sort out the
error.

Here is the complete program:

using namespace std;
#include <iostream>
#include <string>

template <class T>
class ListElement
{
public:
ListElement(ListElement<T> *,T );
T const & Data() const;
ListElement<T> ** Next() ;

private:

ListElement<T> *next;
T data;
};

template <class T>
class LinkedList
{
public:
LinkedList();
void display();
void Append(T item);
private:
ListElement<T> *Head, *Tail;
};

// Implementing the various functions of the ListElement class.
template <class T>
ListElement<T>:: ListElement(ListElement<T> * _next, T _data):
data(_data),next(_next)
{
}

template <class T>
T const & ListElement<T>:: Data() const
{
return data;
}

template <class T>
ListElement<T> ** ListElement<T>:: Next()
{
return &next;
}

// ListElement class functions implemented.

//Implementing the various functions of the LinkedList class.

template <class T>
void LinkedList<T>:: display()
{
ListElement<T> *tmp;
tmp=Head;
if(Head == NULL)
{
cout<<"No elements in the Listn";
return;
}

while(tmp!=NULL)
{
cout<< tmp->Data() << "n";
tmp=*tmp->Next();
}
return ;
}

template <class T>
LinkedList<T>:: LinkedList()
:Head(NULL), Tail( NULL)
{
}

template <class T>
void LinkedList<T>:: Append (T item)
{
ListElement<T> *tmp;
tmp = new ListElement<T>(NULL, item);

if(Head == NULL){
Head = Tail = tmp;
return ;
}
*Tail->Next() = tmp;
Tail = tmp;
return;
}

LinkedList<string> list;

int main(void)
{

// LinkedList<string> list;
int choice;
cout<<"1: Displayn2: Prependn3: Exitn ";
cin>>choice;
switch(choice)
{
case 1:
list.display();
break;

case 2:
string data;
cout<<"enter the data to be added to the listn";
cin>>data;
list.Append(data);
break;

case 3:
exit(1);
break;

default:
cout<<"Invalid Choicen";
break;

}

main();
return 0;
}

John Harrison · Guest

alice wrote:

Mike Wahler · Guest

"alice" <alice_vas2001 (AT) yahoo (DOT) com> wrote