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Mention that Sync/Send are automatically derived #30700

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Merged
merged 1 commit into from
Jan 7, 2016
Merged

Mention that Sync/Send are automatically derived #30700

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4 changes: 4 additions & 0 deletions src/libcore/marker.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,8 @@ use hash::Hash;
use hash::Hasher;

/// Types that can be transferred across thread boundaries.
///
/// This trait is automatically derived when the compiler determines it's appropriate.
#[stable(feature = "rust1", since = "1.0.0")]
#[lang = "send"]
#[rustc_on_unimplemented = "`{Self}` cannot be sent between threads safely"]
Expand Down Expand Up @@ -219,6 +221,8 @@ pub trait Copy : Clone {
/// wrapper around the value(s) which can be mutated when behind a `&`
/// reference; not doing this is undefined behavior (for example,
/// `transmute`-ing from `&T` to `&mut T` is invalid).
///
/// This trait is automatically derived when the compiler determines it's appropriate.
#[stable(feature = "rust1", since = "1.0.0")]
#[lang = "sync"]
#[rustc_on_unimplemented = "`{Self}` cannot be shared between threads safely"]
Expand Down