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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 09:26:03 +0000 |
commit | 9918693037dce8aa4bb6f08741b6812923486c18 (patch) | |
tree | 21d2b40bec7e6a7ea664acee056eb3d08e15a1cf /tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs | |
parent | Releasing progress-linux version 1.75.0+dfsg1-5~progress7.99u1. (diff) | |
download | rustc-9918693037dce8aa4bb6f08741b6812923486c18.tar.xz rustc-9918693037dce8aa4bb6f08741b6812923486c18.zip |
Merging upstream version 1.76.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs')
-rw-r--r-- | tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs b/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs new file mode 100644 index 000000000..8a90a09ff --- /dev/null +++ b/tests/ui/traits/trait-upcasting/migrate-lint-different-substs.rs @@ -0,0 +1,21 @@ +// check-pass + +use std::ops::Deref; + +trait Bar<T> {} + +trait Foo: Bar<i32> { + fn as_dyn_bar_u32<'a>(&self) -> &(dyn Bar<u32> + 'a); +} + +impl<'a> Deref for dyn Foo + 'a { + //~^ WARN this `Deref` implementation is covered by an implicit supertrait coercion + //~| WARN this will change its meaning in a future release! + type Target = dyn Bar<u32> + 'a; + + fn deref(&self) -> &Self::Target { + self.as_dyn_bar_u32() + } +} + +fn main() {} |