pub unsafe fn decrement_strong_count(ptr: *const T) {
        unsafe { mem::drop(Rc::from_raw(ptr)) };
    }
Returns `true` if the two `Rc`s point to the same allocation
(in a vein similar to [`ptr::eq`]).

# Examples

```
use std::rc::Rc;

let five = Rc::new(5);
let same_five = Rc::clone(&five);
benchmarks/haystacks/code/rust-library.rs