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os2	02-23-2005 07:58 AM

free pointer

hi

habitually, i free when i do a malloc...
but i see sometime on the web some people who free pointer created without maloc

Code:

void checkIO()

{

        struct conn *conn_ptr = conns;



        while(conn_ptr != NULL) {

                if(fdIsReadable(conn_ptr->fd))

                        doIO(conn_ptr);

                conn_ptr = conn_ptr->next;

        }

}

here some people will do after the while:

Code:

free(conn_ptr );

thanks

itsme86

02-23-2005 09:07 AM

Perhaps conns is allocated somewhere. It's the same as doing like this:

Code:

{

  int *a = malloc(sizeof(int));

  int *b = a;



  free(b);

}

b and a both point to the same memory so you can pass either one to free().

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