Auto merge of #52986 - pietroalbini:beta-backports, r=Mark-Simulacrum · rust-lang/rust@ea82e08 (original) (raw)
`@@ -94,9 +94,9 @@ Misc
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`Compatibility Notes
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`-------------------
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- [Rust will no longer consider trait objects with duplicated constraints to
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have implementations.][51276] For example the below code will now fail
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to compile.
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- [Rust will consider trait objects with duplicated constraints to be the same
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type as without the duplicated constraint.][51276] For example the below code will
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now fail to compile.
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```` ```rust
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`trait Trait {}
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`` [alloc::handle_alloc_error]: https://doc.rust-lang.org/std/alloc/fn.handle_alloc_error.html
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`` [btree_map::Entry::or_default]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default
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`` [fmt::Alignment]: https://doc.rust-lang.org/std/fmt/enum.Alignment.html
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`` [iter::repeat_with]: https://doc.rust-lang.org/std/iter/fn.repeat_with.html
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`` [num::NonZeroUsize]: https://doc.rust-lang.org/std/num/struct.NonZeroUsize.html
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`` [num::NonZeroU128]: https://doc.rust-lang.org/std/num/struct.NonZeroU128.html
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`` [{Any + Send + Sync}::downcast_ref]: https://doc.rust-lang.org/std/any/trait.Any.html#method.downcast_ref-2
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`` [{Any + Send + Sync}::is]: https://doc.rust-lang.org/std/any/trait.Any.html#method.is-2
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Version 1.27.2 (2018-07-20)
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===========================
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Compatibility Notes
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- The borrow checker was fixed to avoid potential unsoundness when using
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match ergonomics: #52213.
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`Version 1.27.1 (2018-07-10)
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`===========================
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`@@ -190,7 +201,7 @@ Version 1.27.0 (2018-06-21)
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`Language
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`--------
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`` - [Removed 'proc' from the reserved keywords list.][49699] This allows proc to
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be used as an identifer.
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be used as an identifier.
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`- [The dyn syntax is now available.][49968] This syntax is equivalent to the
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`` bare Trait syntax, and should make it clearer when being used in tandem with
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`` impl Trait. Since it is equivalent to the following syntax:
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`` * Patterns with ref mut now correctly invoke [DerefMut] when
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matching against dereferencable values.
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matching against dereferenceable values.
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`Libraries
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`---------
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