1 error[E0308]: intrinsic has wrong type
4 LL | fn size_of<T>(); //~ ERROR E0308
5 | ^^^^^^^^^^^^^^^^ expected (), found usize
7 = note: expected type `unsafe extern "rust-intrinsic" fn()`
8 found type `unsafe extern "rust-intrinsic" fn() -> usize`
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0308`.