Freeing malloced structure in a function

Question

I\'m creating a source files containing buffer functionality that I want to use for my other library that I\'m creating.

It is working correctly but I\'m having tro

Answer 1

[too long for a comment]

To allow your "destructor" to set the pointer passed to NULL modify your code like this:

void dbuffer_destroy(DBUFF ** buffer)
{
  if ((NULL == buffer) || (NULL == *buffer))
  {
     return;
  }

  free((*buffer)->pPosition);
  free((*buffer)->pStorage);
  free(*buffer);
  *buffer = NULL;
}

and call it like this:

  ...
  dbuffer_destroy(&buff);
  ...