mirror of https://github.com/rust-lang/rust
80 lines
3.7 KiB
Plaintext
80 lines
3.7 KiB
Plaintext
error[E0038]: the trait `Bar` cannot be made into an object
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--> $DIR/issue-18959.rs:11:12
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LL | fn foo(b: &dyn Bar) {
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| ^^^^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/issue-18959.rs:1:20
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LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
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| ^^^ ...because method `foo` has generic type parameters
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LL | pub trait Bar: Foo { }
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| --- this trait cannot be made into an object...
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= help: consider moving `foo` to another trait
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error[E0038]: the trait `Bar` cannot be made into an object
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--> $DIR/issue-18959.rs:13:5
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LL | b.foo(&0)
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| ^^^^^^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/issue-18959.rs:1:20
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LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
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| ^^^ ...because method `foo` has generic type parameters
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LL | pub trait Bar: Foo { }
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| --- this trait cannot be made into an object...
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= help: consider moving `foo` to another trait
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error[E0038]: the trait `Bar` cannot be made into an object
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--> $DIR/issue-18959.rs:19:15
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LL | let test: &dyn Bar = &mut thing;
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| ^^^^^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/issue-18959.rs:1:20
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LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
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| ^^^ ...because method `foo` has generic type parameters
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LL | pub trait Bar: Foo { }
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| --- this trait cannot be made into an object...
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= help: consider moving `foo` to another trait
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error[E0038]: the trait `Bar` cannot be made into an object
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--> $DIR/issue-18959.rs:19:26
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LL | let test: &dyn Bar = &mut thing;
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| ^^^^^^^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/issue-18959.rs:1:20
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LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
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| ^^^ ...because method `foo` has generic type parameters
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LL | pub trait Bar: Foo { }
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| --- this trait cannot be made into an object...
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= help: consider moving `foo` to another trait
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= note: required for the cast from `&mut Thing` to `&dyn Bar`
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error[E0038]: the trait `Bar` cannot be made into an object
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--> $DIR/issue-18959.rs:22:9
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LL | foo(test);
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| ^^^^ `Bar` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/issue-18959.rs:1:20
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LL | pub trait Foo { fn foo<T>(&self, ext_thing: &T); }
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| ^^^ ...because method `foo` has generic type parameters
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LL | pub trait Bar: Foo { }
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| --- this trait cannot be made into an object...
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= help: consider moving `foo` to another trait
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error: aborting due to 5 previous errors
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For more information about this error, try `rustc --explain E0038`.
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