Volatile and sensitive memory

[briansmith]

@Amanieu

#[repr(C)]
struct Foo {
    buffer: [u8, 64]
}

And accessing the contents of the buffer using only raw pointers and volatile operations. Note that this means that you can't create a reference to Foo, only a pointer, if you wish to guarantee no spurious reads are generated.

How about this, without the #[repr(C)]:

struct Foo {
    buffer: [u8, 64]
}

Would the same still hold? Or, does repr(C) add the volatile-ish semantics?