diff options
Diffstat (limited to 'tests/ui/traits/trait-upcasting/deref-upcast-behavioral-change.stderr')
| -rw-r--r-- | tests/ui/traits/trait-upcasting/deref-upcast-behavioral-change.stderr | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/traits/trait-upcasting/deref-upcast-behavioral-change.stderr b/tests/ui/traits/trait-upcasting/deref-upcast-behavioral-change.stderr new file mode 100644 index 000000000..fa93e28c7 --- /dev/null +++ b/tests/ui/traits/trait-upcasting/deref-upcast-behavioral-change.stderr @@ -0,0 +1,19 @@ +error: this `Deref` implementation is covered by an implicit supertrait coercion + --> $DIR/deref-upcast-behavioral-change.rs:17:1 + | +LL | impl<'a> Deref for dyn Foo + 'a { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `dyn Foo` implements `Deref<Target = dyn Bar<u32>>` which conflicts with supertrait `Bar<i32>` +... +LL | type Target = dyn Bar<u32> + 'a; + | -------------------------------- target type is a supertrait of `dyn Foo` + | + = warning: this will change its meaning in a future release! + = note: for more information, see issue #89460 <https://github.com/rust-lang/rust/issues/89460> +note: the lint level is defined here + --> $DIR/deref-upcast-behavioral-change.rs:1:9 + | +LL | #![deny(deref_into_dyn_supertrait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 1 previous error + |