SIGABRT program signal interrupted

Question

My program has a structure

struct List      
{
    int data;
    List *next;
};

and the function of adding an item to the tail of the list:

void addL(List* &tail, int dat)   
{

    if (tail==NULL) 
    {
        tail = new List;
        tail->data = dat; 
        tail->next=NULL;
    }   
    else
    {
        tail->next = new List;
        tail = tail->next;
        tail->data = dat;
        tail->next = NULL;
    }
}

gdb talks about the problem

terminate called after throwing an instance of 'St9bad_alloc'
  what():  std::bad_alloc

Program received signal SIGABRT, Aborted.
0xb7fdd424 in __kernel_vsyscall ()

in line

tail->next = new List;

I tried to make another variable of type List:

List* add;
add = new List;

but got the same problem in the second line.

How to rewrite this? And is there a need to insert a function here that calls addL? Sorry, if this question has already been asked, I could not understand, looking through them.

Answer 1

Either you have lost memory (perhaps your list is too large for your memory), or you are trying to find somewhere in memory that you are not allowed to.

---

Since the list is small, I suspect this is a problem (as indicated here ):

abort() , - . , malloc() abort(), .

: .

, , . , - .