Auto merge of #52229 - GuillaumeGomez:rollup, r=GuillaumeGomez
Rollup of 7 pull requests Successful merges: - #51612 (NLL: fix E0594 "change to mutable ref" suggestion) - #51722 (Updated RELEASES for 1.28.0) - #52064 (Clarifying how the alignment of the struct works) - #52149 (Add #[repr(transparent)] to Atomic* types) - #52151 (Trait impl settings) - #52171 (Correct some codegen stats counter inconsistencies) - #52195 (rustc: Avoid /tmp/ in graphviz writing) Failed merges: - #52164 (use proper footnote syntax for references) r? @ghost
This commit is contained in:
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commit
b9f1a0762a
147
RELEASES.md
147
RELEASES.md
@ -1,3 +1,146 @@
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Version 1.28.0 (2018-08-02)
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===========================
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Language
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--------
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- [The `#[repr(transparent)]` attribute is now stable.][51562] This attribute
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allows a Rust newtype wrapper (`struct NewType<T>(T);`) to be represented as
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the inner type across Foreign Function Interface (FFI) boundaries.
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- [The keywords `pure`, `sizeof`, `alignof`, and `offsetof` have been unreserved
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and can now be used as identifiers.][51196]
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- [The `GlobalAlloc` trait and `#[global_allocator]` attribute are now
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stable.][51241] This will allow users to specify a global allocator for
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their program.
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- [Unit test functions marked with the `#[test]` attribute can now return
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`Result<(), E: Debug>` in addition to `()`.][51298]
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- [The `lifetime` specifier for `macro_rules!` is now stable.][50385] This
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allows macros to easily target lifetimes.
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Compiler
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--------
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- [The `s` and `z` optimisation levels are now stable.][50265] These optimisations
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prioritise making smaller binary sizes. `z` is the same as `s` with the
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exception that it does not vectorise loops, which typically results in an even
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smaller binary.
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- [The short error format is now stable.][49546] Specified with
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`--error-format=short` this option will provide a more compressed output of
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rust error messages.
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- [Added a lint warning when you have duplicated `macro_export`s.][50143]
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- [Reduced the number of allocations in the macro parser.][50855] This can
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improve compile times of macro heavy crates on average by 5%.
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Libraries
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---------
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- [Implemented `Default` for `&mut str`.][51306]
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- [Implemented `From<bool>` for all integer and unsigned number types.][50554]
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- [Implemented `Extend` for `()`.][50234]
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- [The `Debug` implementation of `time::Duration` should now be more easily
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human readable.][50364] Previously a `Duration` of one second would printed as
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`Duration { secs: 1, nanos: 0 }` and will now be printed as `1s`.
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- [Implemented `From<&String>` for `Cow<str>`, `From<&Vec<T>>` for `Cow<[T]>`,
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`From<Cow<CStr>>` for `CString`, `From<CString>, From<CStr>, From<&CString>`
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for `Cow<CStr>`, `From<OsString>, From<OsStr>, From<&OsString>` for
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`Cow<OsStr>`, `From<&PathBuf>` for `Cow<Path>`, and `From<Cow<Path>>`
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for `PathBuf`.][50170]
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- [Implemented `Shl` and `Shr` for `Wrapping<u128>`
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and `Wrapping<i128>`.][50465]
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- [`DirEntry::metadata` now uses `fstatat` instead of `lstat` when
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possible.][51050] This can provide up to a 40% speed increase.
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- [Improved error messages when using `format!`.][50610]
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Stabilized APIs
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---------------
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- [`Iterator::step_by`]
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- [`Path::ancestors`]
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- [`btree_map::Entry::or_default`]
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- [`fmt::Alignment`]
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- [`hash_map::Entry::or_default`]
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- [`iter::repeat_with`]
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- [`num::NonZeroUsize`]
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- [`num::NonZeroU128`]
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- [`num::NonZeroU16`]
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- [`num::NonZeroU32`]
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- [`num::NonZeroU64`]
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- [`num::NonZeroU8`]
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- [`ops::RangeBounds`]
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- [`slice::SliceIndex`]
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- [`slice::from_mut`]
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- [`slice::from_ref`]
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- [`{Any + Send + Sync}::downcast_mut`]
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- [`{Any + Send + Sync}::downcast_ref`]
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- [`{Any + Send + Sync}::is`]
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Cargo
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-----
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- [Cargo will now no longer allow you to publish crates with build scripts that
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modify the `src` directory.][cargo/5584] The `src` directory in a crate should be
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considered to be immutable.
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Misc
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----
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- [The `suggestion_applicability` field in `rustc`'s json output is now
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stable.][50486] This will allow dev tools to check whether a code suggestion
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would apply to them.
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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
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trait Trait {}
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impl Trait + Send {
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fn test(&self) { println!("one"); } //~ ERROR duplicate definitions with name `test`
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}
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impl Trait + Send + Send {
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fn test(&self) { println!("two"); }
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}
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```
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[49546]: https://github.com/rust-lang/rust/pull/49546/
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[50143]: https://github.com/rust-lang/rust/pull/50143/
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[50170]: https://github.com/rust-lang/rust/pull/50170/
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[50234]: https://github.com/rust-lang/rust/pull/50234/
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[50265]: https://github.com/rust-lang/rust/pull/50265/
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[50364]: https://github.com/rust-lang/rust/pull/50364/
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[50385]: https://github.com/rust-lang/rust/pull/50385/
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[50465]: https://github.com/rust-lang/rust/pull/50465/
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[50486]: https://github.com/rust-lang/rust/pull/50486/
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[50554]: https://github.com/rust-lang/rust/pull/50554/
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[50610]: https://github.com/rust-lang/rust/pull/50610/
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[50855]: https://github.com/rust-lang/rust/pull/50855/
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[51050]: https://github.com/rust-lang/rust/pull/51050/
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[51196]: https://github.com/rust-lang/rust/pull/51196/
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[51200]: https://github.com/rust-lang/rust/pull/51200/
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[51241]: https://github.com/rust-lang/rust/pull/51241/
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[51276]: https://github.com/rust-lang/rust/pull/51276/
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[51298]: https://github.com/rust-lang/rust/pull/51298/
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[51306]: https://github.com/rust-lang/rust/pull/51306/
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[51562]: https://github.com/rust-lang/rust/pull/51562/
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[cargo/5584]: https://github.com/rust-lang/cargo/pull/5584/
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[`Iterator::step_by`]: https://doc.rust-lang.org/std/iter/trait.Iterator.html#method.step_by
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[`Path::ancestors`]: https://doc.rust-lang.org/std/path/struct.Path.html#method.ancestors
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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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[`hash_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default
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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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[`num::NonZeroU16`]: https://doc.rust-lang.org/std/num/struct.NonZeroU16.html
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[`num::NonZeroU32`]: https://doc.rust-lang.org/std/num/struct.NonZeroU32.html
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[`num::NonZeroU64`]: https://doc.rust-lang.org/std/num/struct.NonZeroU64.html
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[`num::NonZeroU8`]: https://doc.rust-lang.org/std/num/struct.NonZeroU8.html
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[`ops::RangeBounds`]: https://doc.rust-lang.org/std/ops/trait.RangeBounds.html
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[`slice::SliceIndex`]: https://doc.rust-lang.org/std/slice/trait.SliceIndex.html
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[`slice::from_mut`]: https://doc.rust-lang.org/std/slice/fn.from_mut.html
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[`slice::from_ref`]: https://doc.rust-lang.org/std/slice/fn.from_ref.html
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[`{Any + Send + Sync}::downcast_mut`]: https://doc.rust-lang.org/std/any/trait.Any.html#method.downcast_mut-2
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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 1.27.0 (2018-06-21)
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==========================
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@ -188,7 +331,7 @@ Language
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- [Closures now implement `Copy` and/or `Clone` if all captured variables
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implement either or both traits.][49299]
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- [The inclusive range syntax e.g. `for x in 0..=10` is now stable.][47813]
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- [Stablise `'_`. The underscore lifetime can be used anywhere where a
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- [The `'_` lifetime is now stable. The underscore lifetime can be used anywhere where a
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lifetime can be elided.][49458]
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- [`impl Trait` is now stable allowing you to have abstract types in returns
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or in function parameters.][49255] e.g. `fn foo() -> impl Iterator<Item=u8>` or
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@ -389,7 +532,7 @@ Version 1.25.0 (2018-03-29)
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Language
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--------
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- [Stabilised `#[repr(align(x))]`.][47006] [RFC 1358]
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- [The `#[repr(align(x))]` attribute is now stable.][47006] [RFC 1358]
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- [You can now use nested groups of imports.][47948]
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e.g. `use std::{fs::File, io::Read, path::{Path, PathBuf}};`
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- [You can now have `|` at the start of a match arm.][47947] e.g.
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@ -229,6 +229,8 @@ pub fn forget<T>(t: T) {
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/// 2. Round up the current size to the nearest multiple of the next field's [alignment].
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///
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/// Finally, round the size of the struct to the nearest multiple of its [alignment].
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/// The alignment of the struct is usually the largest alignment of all its
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/// fields; this can be changed with the use of `repr(align(N))`.
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///
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/// Unlike `C`, zero sized structs are not rounded up to one byte in size.
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///
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@ -283,7 +285,8 @@ pub fn forget<T>(t: T) {
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/// // The size of the second field is 2, so add 2 to the size. Size is 4.
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/// // The alignment of the third field is 1, so add 0 to the size for padding. Size is 4.
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/// // The size of the third field is 1, so add 1 to the size. Size is 5.
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/// // Finally, the alignment of the struct is 2, so add 1 to the size for padding. Size is 6.
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/// // Finally, the alignment of the struct is 2 (because the largest alignment amongst its
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/// // fields is 2), so add 1 to the size for padding. Size is 6.
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/// assert_eq!(6, mem::size_of::<FieldStruct>());
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///
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/// #[repr(C)]
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@ -9,9 +9,9 @@
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// except according to those terms.
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/*!
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Almost direct (but slightly optimized) Rust translation of Figure 3 of [1].
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Almost direct (but slightly optimized) Rust translation of Figure 3 of \[1\].
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[1] Burger, R. G. and Dybvig, R. K. 1996. Printing floating-point numbers
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\[1\] Burger, R. G. and Dybvig, R. K. 1996. Printing floating-point numbers
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quickly and accurately. SIGPLAN Not. 31, 5 (May. 1996), 108-116.
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*/
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@ -9,10 +9,10 @@
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// except according to those terms.
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/*!
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Rust adaptation of Grisu3 algorithm described in [1]. It uses about
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Rust adaptation of Grisu3 algorithm described in \[1\]. It uses about
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1KB of precomputed table, and in turn, it's very quick for most inputs.
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[1] Florian Loitsch. 2010. Printing floating-point numbers quickly and
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\[1\] Florian Loitsch. 2010. Printing floating-point numbers quickly and
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accurately with integers. SIGPLAN Not. 45, 6 (June 2010), 233-243.
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*/
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@ -124,6 +124,7 @@ pub fn spin_loop_hint() {
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/// [`bool`]: ../../../std/primitive.bool.html
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#[cfg(target_has_atomic = "8")]
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#[stable(feature = "rust1", since = "1.0.0")]
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#[repr(transparent)]
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pub struct AtomicBool {
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v: UnsafeCell<u8>,
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}
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@ -147,6 +148,7 @@ unsafe impl Sync for AtomicBool {}
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/// This type has the same in-memory representation as a `*mut T`.
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#[cfg(target_has_atomic = "ptr")]
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#[stable(feature = "rust1", since = "1.0.0")]
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#[repr(transparent)]
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pub struct AtomicPtr<T> {
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p: UnsafeCell<*mut T>,
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}
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@ -976,6 +978,7 @@ macro_rules! atomic_int {
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///
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/// [module-level documentation]: index.html
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#[$stable]
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#[repr(transparent)]
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pub struct $atomic_type {
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v: UnsafeCell<$int_type>,
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}
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@ -39,14 +39,14 @@ use std::sync::atomic::{AtomicBool, Ordering};
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fn print_help_message() {
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println!("\
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-Z print-region-graph by default prints a region constraint graph for every \n\
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function body, to the path `/tmp/constraints.nodeXXX.dot`, where the XXX is \n\
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function body, to the path `constraints.nodeXXX.dot`, where the XXX is \n\
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replaced with the node id of the function under analysis. \n\
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\n\
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To select one particular function body, set `RUST_REGION_GRAPH_NODE=XXX`, \n\
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where XXX is the node id desired. \n\
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\n\
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To generate output to some path other than the default \n\
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`/tmp/constraints.nodeXXX.dot`, set `RUST_REGION_GRAPH=/path/desired.dot`; \n\
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`constraints.nodeXXX.dot`, set `RUST_REGION_GRAPH=/path/desired.dot`; \n\
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occurrences of the character `%` in the requested path will be replaced with\n\
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the node id of the function under analysis. \n\
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\n\
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@ -90,7 +90,7 @@ pub fn maybe_print_constraints_for<'a, 'gcx, 'tcx>(
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}
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Ok(other_path) => other_path,
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Err(_) => "/tmp/constraints.node%.dot".to_string(),
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Err(_) => "constraints.node%.dot".to_string(),
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};
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if output_template.is_empty() {
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@ -277,7 +277,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
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}
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pub fn nswsub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
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self.count_insn("nwsub");
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self.count_insn("nswsub");
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unsafe {
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llvm::LLVMBuildNSWSub(self.llbuilder, lhs, rhs, noname())
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}
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@ -291,14 +291,14 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
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}
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pub fn fsub(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
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self.count_insn("sub");
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self.count_insn("fsub");
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unsafe {
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llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, noname())
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}
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}
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pub fn fsub_fast(&self, lhs: ValueRef, rhs: ValueRef) -> ValueRef {
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self.count_insn("sub");
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self.count_insn("fsub");
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unsafe {
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let instr = llvm::LLVMBuildFSub(self.llbuilder, lhs, rhs, noname());
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llvm::LLVMRustSetHasUnsafeAlgebra(instr);
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@ -1315,6 +1315,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> {
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}
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pub fn add_incoming_to_phi(&self, phi: ValueRef, val: ValueRef, bb: BasicBlockRef) {
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self.count_insn("addincoming");
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unsafe {
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llvm::LLVMAddIncoming(phi, &val, &bb, 1 as c_uint);
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}
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@ -1669,6 +1669,8 @@ impl<'a> Settings<'a> {
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settings: vec![
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("item-declarations", "Auto-hide item declarations.", true),
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("item-attributes", "Auto-hide item attributes.", true),
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("trait-implementations", "Auto-hide trait implementations documentation",
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true),
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("go-to-only-result", "Directly go to item in search if there is only one result",
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false),
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],
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@ -1938,17 +1938,19 @@
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if (collapse) {
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toggleAllDocs(pageId, true);
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}
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onEach(document.getElementsByClassName("collapse-toggle"), function(e) {
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// inherent impl ids are like 'impl' or impl-<number>'.
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// they will never be hidden by default.
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var n = e.parentNode;
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if (n.id.match(/^impl(?:-\d+)?$/) === null) {
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// Automatically minimize all non-inherent impls
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if (collapse || hasClass(n, 'impl')) {
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collapseDocs(e, "hide", pageId);
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if (getCurrentValue('rustdoc-trait-implementations') !== "false") {
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onEach(document.getElementsByClassName("collapse-toggle"), function(e) {
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// inherent impl ids are like 'impl' or impl-<number>'.
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// they will never be hidden by default.
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var n = e.parentNode;
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if (n.id.match(/^impl(?:-\d+)?$/) === null) {
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// Automatically minimize all non-inherent impls
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if (collapse || hasClass(n, 'impl')) {
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collapseDocs(e, "hide", pageId);
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}
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}
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}
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});
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});
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}
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}
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var x = document.getElementById('toggle-all-docs');
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