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Segmentation Fault in using a node struct


By : Next Idea
Date : October 17 2020, 01:08 AM
may help you . For starters the function has undefined behavior because the value of the expression *head can be equal to NULL for an empty list. In this case this expression temp -> next will be invalid.
Also you have to compare strings instead of pointers when you are searching the node.
code :
node * rem_inorder( node **head, const char *key_name )
{
    node *target = NULL;

    while ( *head && strcmp( ( *head )->name, key_name ) != 0 )
    {
        head = &( *head )->next;
    }

    if ( *head != NULL )
    {
        target = `*head;
        *head = ( *head )->next;
        target->next = NULL;
    }

    return target;
}`


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Segmentation Fault - altering struct (within another struct's) variables


By : mxt8857
Date : March 29 2020, 07:55 AM
Hope this helps I have this, in my header: , Your WorldSurface isn't defined nor initialized properly:
code :
struct WorldSurface {
    Surface *surface = new Surface[MAX_SURFACES];
    int counter = 0;
    int current = 0;
};
struct WorldSurface {
    Surface *surface;
    int counter;
    int current;
};
...
WorldSurface::WorldSurface():
    counter(0),current(0),surface(new Surface[MAX_SURFACES]){}

Segmentation Fault 11 Linked List Node Struct


By : Gangolu Sushma
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further When creating an empty list, you just need to set head to NULL. There's no need to set its item or next, because it's an empty list. You were dereferencing the NULL pointer, which is not allowed, and on most systems will result in a segmentation fault or similar error.
code :
list::list()
{
    head = NULL;
}

C - dynamically sized array of struct pointers in another struct, segmentation fault


By : Saber
Date : March 29 2020, 07:55 AM
hope this fix your issue If you are getting a segfault, then you should include the backtrace in your question. That will make it a lot easier to figure out what's going on.
Looking at the code, I see that you're not clearing result->links when you malloc or realloc it, but you are relying on the pointers being NULL inside pushList. You increase list_pointer->content and then check if (list_pointer->links[i] == NULL). That's going to result in undefined behavior for sure.

I get a segmentation fault when I create a node with a struct in c++


By : user3794087
Date : March 29 2020, 07:55 AM
it fixes the issue In newNode function, you haven't initialized the node you declared. That pointer to a node therefore wasn't properly allocated. To fix this, you have to use new operator.
code :
struct Node* newNode(int k)
{
   struct Node* node = new Node();
   node->k = k;
   return node;
}

Struct Segmentation fault: 11. Unable to reassign values in a struct first initialized to null


By : Lishi
Date : March 29 2020, 07:55 AM
I wish this helpful for you theStack = pushInt(theStack, pushValue);
Here the NULL Pointer (theStack initialised with NULL) is passed. So it becomes De-referencing the NULL pointer inside pushInt function and hence the seg fault.
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