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Diffstat (limited to 'tests/ui/feature-gates/feature-gate-dispatch-from-dyn-missing-impl.stderr')
| -rw-r--r-- | tests/ui/feature-gates/feature-gate-dispatch-from-dyn-missing-impl.stderr | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/feature-gates/feature-gate-dispatch-from-dyn-missing-impl.stderr b/tests/ui/feature-gates/feature-gate-dispatch-from-dyn-missing-impl.stderr new file mode 100644 index 000000000..d81eade8e --- /dev/null +++ b/tests/ui/feature-gates/feature-gate-dispatch-from-dyn-missing-impl.stderr @@ -0,0 +1,45 @@ +error[E0038]: the trait `Trait` cannot be made into an object + --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:25 + | +LL | fn ptr(self: Ptr<Self>); + | --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self` +... +LL | Ptr(Box::new(4)) as Ptr<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/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18 + | +LL | trait Trait { + | ----- this trait cannot be made into an object... +LL | fn ptr(self: Ptr<Self>); + | ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on + +error[E0038]: the trait `Trait` cannot be made into an object + --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:5 + | +LL | fn ptr(self: Ptr<Self>); + | --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self` +... +LL | Ptr(Box::new(4)) as Ptr<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/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18 + | +LL | trait Trait { + | ----- this trait cannot be made into an object... +LL | fn ptr(self: Ptr<Self>); + | ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on +note: required for `Ptr<{integer}>` to implement `CoerceUnsized<Ptr<dyn Trait>>` + --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:20:40 + | +LL | impl<T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T> {} + | --------- ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^ + | | + | unsatisfied trait bound introduced here + = note: required by cast to type `Ptr<dyn Trait>` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0038`. |