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Diffstat (limited to '')
| -rw-r--r-- | tests/ui/traits/trait-upcasting/migrate-lint-different-substs.stderr | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.stderr b/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.stderr new file mode 100644 index 000000000..6245da5a1 --- /dev/null +++ b/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.stderr @@ -0,0 +1,15 @@ +warning: this `Deref` implementation is covered by an implicit supertrait coercion + --> $DIR/migrate-lint-different-substs.rs:11:1 + | +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: `#[warn(deref_into_dyn_supertrait)]` on by default + +warning: 1 warning emitted + |