C - Dereferencing void pointer

Question

I\'m trying to create my own swap function but I have troubles.
Why I\'m getting \" dereferencing void pointer \" ?

void    ft_swap(void *a, void *b, size         


        

Answer 1

You want to cast the (abstract) void* pointer to a pointer to  unsigned char so code:

cur_a = (unsigned char *)a + i;

Your code was understood as cur_a = (unsigned char *)(*a) + i; which wrongly dereferences a void* abstract pointer.

BTW, your *a = cur_b; does not make sense neither. Perhaps you want

((unsigned char*)a)[i] = cur_b;