Is it undefined behavior to take the address of an uninitialized pointer?

Question

N1570 states that this is undefined behavior:

§J.2/1 The value of an object with automatic storage duration is used while it is indeterminate (6.2.4

Answer 1

The pointer's value and its address are not the same.

void *foo;

That pointer has an undefined value, but the address of foo, i.e. the value of &foo, must be well-determined (since otherwise we can't access it).

At least that's my intuitive understanding, I didn't dig up the standard now, I just think you're mis-reading it.

When talking about code, the two are sometimes confused ("what's the address of that pointer?" can mean "what's the value of that pointer, what address is it pointing to?") but they are really distinct.