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warning: default bound relaxed for a type parameter, but this does nothing because the given bound is not a default; only `?Sized` is supported
--> $DIR/issue-87199.rs:8:8
|
LL | fn arg<T: ?Send>(_: T) {}
| ^
warning: default bound relaxed for a type parameter, but this does nothing because the given bound is not a default; only `?Sized` is supported
--> $DIR/issue-87199.rs:10:12
|
LL | fn ref_arg<T: ?Send>(_: &T) {}
| ^
warning: default bound relaxed for a type parameter, but this does nothing because the given bound is not a default; only `?Sized` is supported
--> $DIR/issue-87199.rs:12:13
|
LL | fn ret() -> impl Iterator<Item = ()> + ?Send { std::iter::empty() }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> $DIR/issue-87199.rs:18:22
|
LL | ref_arg::<[i32]>(&[5]);
| ---------------- ^^^^ doesn't have a size known at compile-time
| |
| required by a bound introduced by this call
|
= help: the trait `Sized` is not implemented for `[i32]`
note: required by a bound in `ref_arg`
--> $DIR/issue-87199.rs:10:12
|
LL | fn ref_arg<T: ?Send>(_: &T) {}
| ^ required by this bound in `ref_arg`
help: consider relaxing the implicit `Sized` restriction
|
LL | fn ref_arg<T: ?Send + ?Sized>(_: &T) {}
| ++++++++
error: aborting due to previous error; 3 warnings emitted
For more information about this error, try `rustc --explain E0277`.
|
