Why doesn't my program seg fault when I dereference a NULL pointer inside of malloc?

Question

I use this malloc style all the time

int *rc = 0;
rc = malloc(sizeof(*rc));

However, it doesn\'t seg fault even though when I call

Answer 1

The sizeof operator doesn't actually evaluate its operand, it only looks at its type. The type of *rc is int, so it's equivalent to sizeof (int). This all happens at compile time.

(Also, this is not "inside of malloc".)