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#include <stdio.h>
#include <stdlib.h>
struct s {
int i;
};
static void fv(struct s *s)
{
/* Do something with s */
free(s);
s = NULL;
}
static void fr(struct s **s)
{
/* Do something with s */
free(*s);
*s = NULL;
}
int main(void)
{
struct s *s;
s = malloc(sizeof(*s));
printf("s: %p\n", s);
fv(s);
printf("s: %p\n", s);
printf("\n");
s = malloc(sizeof(*s));
printf("s: %p\n", s);
fr(&s);
printf("s: %p\n", s);
return 0;
}
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