|  | warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique | 
|  | --> $DIR/fn-ptr-comparisons-some.rs:12:13 | 
|  | | | 
|  | LL |     let _ = Some::<FnPtr>(func) == Some(func as unsafe extern "C" fn()); | 
|  | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
|  | | | 
|  | = note: the address of the same function can vary between different codegen units | 
|  | = note: furthermore, different functions could have the same address after being merged together | 
|  | = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html> | 
|  | = note: `#[warn(unpredictable_function_pointer_comparisons)]` on by default | 
|  |  | 
|  | warning: function pointer comparisons do not produce meaningful results since their addresses are not guaranteed to be unique | 
|  | --> $DIR/fn-ptr-comparisons-some.rs:15:5 | 
|  | | | 
|  | LL |     assert_eq!(Some::<FnPtr>(func), Some(func as unsafe extern "C" fn())); | 
|  | |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | 
|  | | | 
|  | = note: the address of the same function can vary between different codegen units | 
|  | = note: furthermore, different functions could have the same address after being merged together | 
|  | = note: for more information visit <https://doc.rust-lang.org/nightly/core/ptr/fn.fn_addr_eq.html> | 
|  | = note: this warning originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info) | 
|  |  | 
|  | warning: 2 warnings emitted | 
|  |  |