diff options
Diffstat (limited to 'tests/ui/wf/wf-convert-unsafe-trait-obj.stderr')
-rw-r--r-- | tests/ui/wf/wf-convert-unsafe-trait-obj.stderr | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui/wf/wf-convert-unsafe-trait-obj.stderr b/tests/ui/wf/wf-convert-unsafe-trait-obj.stderr new file mode 100644 index 000000000..c9bd4549a --- /dev/null +++ b/tests/ui/wf/wf-convert-unsafe-trait-obj.stderr @@ -0,0 +1,51 @@ +error[E0038]: the trait `Trait` cannot be made into an object + --> $DIR/wf-convert-unsafe-trait-obj.rs:16:25 + | +LL | let t: &dyn Trait = &S; + | ^^ `Trait` cannot be made into an object + | +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> + --> $DIR/wf-convert-unsafe-trait-obj.rs:6:14 + | +LL | trait Trait: Sized {} + | ----- ^^^^^ ...because it requires `Self: Sized` + | | + | this trait cannot be made into an object... + = note: required for `&S` to implement `CoerceUnsized<&dyn Trait>` + = note: required by cast to type `&dyn Trait` + +error[E0038]: the trait `Trait` cannot be made into an object + --> $DIR/wf-convert-unsafe-trait-obj.rs:17:17 + | +LL | takes_trait(&S); + | ^^ `Trait` cannot be made into an object + | +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> + --> $DIR/wf-convert-unsafe-trait-obj.rs:6:14 + | +LL | trait Trait: Sized {} + | ----- ^^^^^ ...because it requires `Self: Sized` + | | + | this trait cannot be made into an object... + = note: required for `&S` to implement `CoerceUnsized<&dyn Trait>` + = note: required by cast to type `&dyn Trait` + +error[E0038]: the trait `Trait` cannot be made into an object + --> $DIR/wf-convert-unsafe-trait-obj.rs:15:5 + | +LL | &S as &dyn Trait; + | ^^ `Trait` cannot be made into an object + | +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> + --> $DIR/wf-convert-unsafe-trait-obj.rs:6:14 + | +LL | trait Trait: Sized {} + | ----- ^^^^^ ...because it requires `Self: Sized` + | | + | this trait cannot be made into an object... + = note: required for `&S` to implement `CoerceUnsized<&dyn Trait>` + = note: required by cast to type `&dyn Trait` + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0038`. |