A late diplomatic recognition that most primitive types impl Copy.

[liigo]

For types i8 u8 i16 u16 i32 u32 i64 u64 isize usize f32 f64 bool char,
and (), they already implemented Copy implicitly since Rust 1.0.
But why not make things explicit?

[rust-highfive]

r? @alexcrichton

(rust_highfive has picked a reviewer for you, use r? to override)

[liigo]

Weird coherence rule:

error[E0206]: the trait `Copy` may not be implemented for this type
   --> src/libcore/marker.rs:271:17
    |
271 | copy_impl! { i8 u8 i16 u16 i32 u32 i64 u64 isize usize f32 f64 bool char }
    | ----------------^^--------------------------------------------------------
    | |               |
    | |               type is not a structure or enumeration
    | in this macro invocation

[liigo]

cc #25893

[liigo]

Closing, no more investment