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error[E0119]: conflicting implementations of trait `std::marker::Send` for type `&[NotSync]`:
--> $DIR/coherence-impls-send.rs:25:1
|
LL | unsafe impl Send for &'static [NotSync] {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: conflicting implementation in crate `core`:
- impl<T> std::marker::Send for &T
where T: std::marker::Sync, T: ?Sized;
= note: upstream crates may add a new impl of trait `std::marker::Sync` for type `[NotSync]` in future versions
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> $DIR/coherence-impls-send.rs:16:1
|
LL | unsafe impl Send for (MyType, MyType) {}
| ^^^^^^^^^^^^^^^^^^^^^----------------
| | |
| | this is not defined in the current crate because tuples are always foreign
| impl doesn't use only types from inside the current crate
|
= note: define and implement a trait or new type instead
error[E0321]: cross-crate traits with a default impl, like `std::marker::Send`, can only be implemented for a struct/enum type, not `&'static NotSync`
--> $DIR/coherence-impls-send.rs:19:1
|
LL | unsafe impl Send for &'static NotSync {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't implement cross-crate trait with a default impl for non-struct/enum type
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> $DIR/coherence-impls-send.rs:22:1
|
LL | unsafe impl Send for [MyType] {}
| ^^^^^^^^^^^^^^^^^^^^^--------
| | |
| | this is not defined in the current crate because slices are always foreign
| impl doesn't use only types from inside the current crate
|
= note: define and implement a trait or new type instead
error[E0117]: only traits defined in the current crate can be implemented for arbitrary types
--> $DIR/coherence-impls-send.rs:25:1
|
LL | unsafe impl Send for &'static [NotSync] {}
| ^^^^^^^^^^^^^^^^^^^^^------------------
| | |
| | this is not defined in the current crate because slices are always foreign
| impl doesn't use only types from inside the current crate
|
= note: define and implement a trait or new type instead
error: aborting due to 5 previous errors
Some errors have detailed explanations: E0117, E0119, E0321.
For more information about an error, try `rustc --explain E0117`.
|
