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Diffstat (limited to 'src/test/ui/generic-associated-types/trait-objects.base.stderr')
| -rw-r--r-- | src/test/ui/generic-associated-types/trait-objects.base.stderr | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/trait-objects.base.stderr b/src/test/ui/generic-associated-types/trait-objects.base.stderr new file mode 100644 index 000000000..1df76a21b --- /dev/null +++ b/src/test/ui/generic-associated-types/trait-objects.base.stderr @@ -0,0 +1,18 @@ +error[E0038]: the trait `StreamingIterator` cannot be made into an object + --> $DIR/trait-objects.rs:14:21 + | +LL | fn min_size(x: &mut dyn for<'a> StreamingIterator<Item<'a> = &'a i32>) -> usize { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `StreamingIterator` 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/trait-objects.rs:8:10 + | +LL | trait StreamingIterator { + | ----------------- this trait cannot be made into an object... +LL | type Item<'a> where Self: 'a; + | ^^^^ ...because it contains the generic associated type `Item` + = help: consider moving `Item` to another trait + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0038`. |