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A late diplomatic recognition that most primitive types impl Copy. #37103

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A late diplomatic recognition that most primitive types impl Copy. #37103

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10 changes: 10 additions & 0 deletions src/libcore/marker.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -261,6 +261,16 @@ pub trait Copy : Clone {
// Empty.
}

macro_rules! copy_impl {
($($t:ty)*) => ($(
#[stable(feature = "rust1", since = "1.0.0")]
impl Copy for $t { }
)*)
}

copy_impl! { i8 u8 i16 u16 i32 u32 i64 u64 isize usize f32 f64 bool char }
copy_impl! { () }

/// Types for which it is safe to share references between threads.
///
/// This trait is automatically implemented when the compiler determines
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