how to copy a generic linked list node structure

[baxy]

Hi i am having problems copying this data structure (memory leaks), so I was wondering if anyone could help me with it.

typedef struct List {
	int x; 
	void *ptr;             
	struct List *next;  
} List;

The problem is allocating memory for void *ptr.

thnx

baxy

[rcgldr]

If you've allocated memory using ptr, then you copy another structure that copies over ptr, you just lost the pointer to the memory that was addressed by ptr.

[smokeyangel]

What have you done so far? Could you post the copy code you've written, and explain how it doesn't work?

What is ptr? Is it a void* because it can point to many different things? If so, how do you determine what the current ptr points to?