Stabilize macro_literal_matcher #56072

Rollup of 14 pull requests Successful merges: - #56024 (Don't auto-inline const functions) - #56045 (Check arg/ret sizedness at ExprKind::Path) - #56072 (Stabilize macro_literal_matcher) - #56075 (Encode a custom "producers" section in wasm files) - #56100 (generator fields are not necessarily initialized) - #56101 (Incorporate `dyn` into more comments and docs.) - #56144 (Fix BTreeSet and BTreeMap gdb pretty-printers) - #56151 (Move a flaky process test out of libstd) - #56170 (Fix self profiler ICE on Windows) - #56176 (Panic setup msg) - #56204 (Suggest correct enum variant on typo) - #56207 (Stabilize the int_to_from_bytes feature) - #56210 (read_c_str should call the AllocationExtra hooks) - #56211 ([master] Forward-ports from beta) Failed merges: r? @ghost

Changelog: Version 1.32.0 (2019-01-17) ========================== Language -------- #### 2018 edition - [You can now use the `?` operator in macro definitions.][56245] The `?` operator allows you to specify zero or one repetitions similar to the `*` and `+` operators. - [Module paths with no leading keyword like `super`, `self`, or `crate`, will now always resolve to the item (`enum`, `struct`, etc.) available in the module if present, before resolving to a external crate or an item the prelude.][56759] E.g. ```rust enum Color { Red, Green, Blue } use Color::*; ``` #### All editions - [You can now match against `PhantomData<T>` types.][55837] - [You can now match against literals in macros with the `literal` specifier.][56072] This will match against a literal of any type. E.g. `1`, `'A'`, `"Hello World"` - [Self can now be used as a constructor and pattern for unit and tuple structs.][56365] E.g. ```rust struct Point(i32, i32); impl Point { pub fn new(x: i32, y: i32) -> Self { Self(x, y) } pub fn is_origin(&self) -> bool { match self { Self(0, 0) => true, _ => false, } } } ``` - [Self can also now be used in type definitions.][56366] E.g. ```rust enum List<T> where Self: PartialOrd<Self> // can write `Self` instead of `List<T>` { Nil, Cons(T, Box<Self>) // likewise here } ``` - [You can now mark traits with `#[must_use]`.][55663] This provides a warning if a `impl Trait` or `dyn Trait` is returned and unused in the program. Compiler -------- - [The default allocator has changed from jemalloc to the default allocator on your system.][55238] The compiler itself on Linux & macOS will still use jemalloc, but programs compiled with it will use the system allocator. - [Added the `aarch64-pc-windows-msvc` target.][55702] Libraries --------- - [`PathBuf` now implements `FromStr`.][55148] - [`Box<[T]>` now implements `FromIterator<T>`.][55843] - [The `dbg!` macro has been stabilized.][56395] This macro enables you to easily debug expressions in your rust program. E.g. ```rust let a = 2; let b = dbg!(a * 2) + 1; // ^-- prints: [src/main.rs:4] a * 2 = 4 assert_eq!(b, 5); ``` The following APIs are now `const` functions and can be used in a `const` context. - [`Cell::as_ptr`] - [`UnsafeCell::get`] - [`char::is_ascii`] - [`iter::empty`] - [`ManuallyDrop::new`] - [`ManuallyDrop::into_inner`] - [`RangeInclusive::start`] - [`RangeInclusive::end`] - [`NonNull::as_ptr`] - [`slice::as_ptr`] - [`str::as_ptr`] - [`Duration::as_secs`] - [`Duration::subsec_millis`] - [`Duration::subsec_micros`] - [`Duration::subsec_nanos`] - [`CStr::as_ptr`] - [`Ipv4Addr::is_unspecified`] - [`Ipv6Addr::new`] - [`Ipv6Addr::octets`] Stabilized APIs --------------- - [`i8::to_be_bytes`] - [`i8::to_le_bytes`] - [`i8::to_ne_bytes`] - [`i8::from_be_bytes`] - [`i8::from_le_bytes`] - [`i8::from_ne_bytes`] - [`i16::to_be_bytes`] - [`i16::to_le_bytes`] - [`i16::to_ne_bytes`] - [`i16::from_be_bytes`] - [`i16::from_le_bytes`] - [`i16::from_ne_bytes`] - [`i32::to_be_bytes`] - [`i32::to_le_bytes`] - [`i32::to_ne_bytes`] - [`i32::from_be_bytes`] - [`i32::from_le_bytes`] - [`i32::from_ne_bytes`] - [`i64::to_be_bytes`] - [`i64::to_le_bytes`] - [`i64::to_ne_bytes`] - [`i64::from_be_bytes`] - [`i64::from_le_bytes`] - [`i64::from_ne_bytes`] - [`i128::to_be_bytes`] - [`i128::to_le_bytes`] - [`i128::to_ne_bytes`] - [`i128::from_be_bytes`] - [`i128::from_le_bytes`] - [`i128::from_ne_bytes`] - [`isize::to_be_bytes`] - [`isize::to_le_bytes`] - [`isize::to_ne_bytes`] - [`isize::from_be_bytes`] - [`isize::from_le_bytes`] - [`isize::from_ne_bytes`] - [`u8::to_be_bytes`] - [`u8::to_le_bytes`] - [`u8::to_ne_bytes`] - [`u8::from_be_bytes`] - [`u8::from_le_bytes`] - [`u8::from_ne_bytes`] - [`u16::to_be_bytes`] - [`u16::to_le_bytes`] - [`u16::to_ne_bytes`] - [`u16::from_be_bytes`] - [`u16::from_le_bytes`] - [`u16::from_ne_bytes`] - [`u32::to_be_bytes`] - [`u32::to_le_bytes`] - [`u32::to_ne_bytes`] - [`u32::from_be_bytes`] - [`u32::from_le_bytes`] - [`u32::from_ne_bytes`] - [`u64::to_be_bytes`] - [`u64::to_le_bytes`] - [`u64::to_ne_bytes`] - [`u64::from_be_bytes`] - [`u64::from_le_bytes`] - [`u64::from_ne_bytes`] - [`u128::to_be_bytes`] - [`u128::to_le_bytes`] - [`u128::to_ne_bytes`] - [`u128::from_be_bytes`] - [`u128::from_le_bytes`] - [`u128::from_ne_bytes`] - [`usize::to_be_bytes`] - [`usize::to_le_bytes`] - [`usize::to_ne_bytes`] - [`usize::from_be_bytes`] - [`usize::from_le_bytes`] - [`usize::from_ne_bytes`] Cargo ----- - [You can now run `cargo c` as an alias for `cargo check`.][cargo/6218] - [Usernames are now allowed in alt registry URLs.][cargo/6242] Misc ---- - [`libproc_macro` has been added to the `rust-src` distribution.][55280] Compatibility Notes ------------------- - [The argument types for AVX's `_mm256_stream_si256`, `_mm256_stream_pd`, `_mm256_stream_ps`][55610] have been changed from `*const` to `*mut` as the previous implementation was unsound. [55148]: rust-lang/rust#55148 [55238]: rust-lang/rust#55238 [55280]: rust-lang/rust#55280 [55610]: rust-lang/rust#55610 [55663]: rust-lang/rust#55663 [55702]: https://github.com/rust-lag/rust/pull/55702/ [55837]: rust-lang/rust#55837 [55843]: rust-lang/rust#55843 [56072]: rust-lang/rust#56072 [56245]: rust-lang/rust#56245 [56365]: https:/ttps://github.com/rust-lang/rust/pull/56395/ [56759]: rust-lang/rust#56759 [cargo/6218]: rust-lang/cargo#6218 [cargo/6242]: rust-lang/cargo#6242 [`CStr::as_ptr`]: https://doc.rust-`Duration::as_secs`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.as_secs [`Duration::subsec_micros`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.subsec_micros [`Duration::subsec_millis`]: https://doc.rust-lang.org/sct.Duration.html#method.subsec_nanos [`Ipv4Addr::is_unspecified`]: https://doc.rust-lang.org/std/net/struct.Ipv4Addr.html#method.is_unspecified [`Ipv6Addr::new`]: https://doc.rust-lang.org/std/net/struct.Ipv6Addr.html#method.new [`Ipv6Addr::octets`]: httpw`]: https://doc.rust-lang.org/std/mem/struct.ManuallyDrop.html#method.new [`NonNull::as_ptr`]: https://doc.rust-lang.org/std/ptr/struct.NonNull.html#method.as_ptr [`RangeInclusive::end`]: https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html#method.end [`RangeInclusive::start`]: https://doc.rust-lang.org/std/ops/struct.RangeInclusive.html#method.start [`UnsafeCell::get`]: https://doc.rust-lang.org/std/cell/struct.UnsafeCell.html#method.get [`slice::as_ptr`]: https://doc.rust-lang.org/std/primitive.slice.html#method.as_ptr [`char::is_ascii`]: https://doc.rust-lang.org/std/primitive.char.html#method.is_ascii [`i128::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.from_be_bytes [`i128::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.from_le_bytes [`i128::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.from_ne_bytes [`i128::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.to_be_bytes [`i128::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.to_le_bytes [`i128::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.to_ne_bytes [`i16::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.from_be_bytes [`i16::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.from_le_bytes [`i16::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.from_ne_bytes [`i16::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.to_be_bytes [`i16::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.to_le_bytes [`i16::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.to_ne_bytes [`i32::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.from_be_bytes [`i32::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.from_le_bytes [`i32::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.from_ne_bytes [`i32::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.to_be_bytes [`i32::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.to_le_bytes [`i32::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.to_ne_bytes [`i64::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.from_be_bytes [`i64::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.from_le_bytes [`i64::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.from_ne_bytes [`i64::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.to_be_bytes [`i64::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.to_le_bytes [`i64::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.to_ne_bytes [`i8::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.from_be_bytes [`i8::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.from_le_bytes [`i8::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.from_ne_bytes [`i8::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.to_be_bytes [`i8::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.to_le_bytes [`i8::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.to_ne_bytes [`isize::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.from_be_bytes [`isize::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.from_le_bytes [`isize::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.from_ne_bytes [`isize::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.to_be_bytes [`isize::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.to_le_bytes [`isize::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.to_ne_bytes [`iter::empty`]: https://doc.rust-lang.org/std/iter/fn.empty.html [`str::as_ptr`]: https://doc.rust-lang.org/std/primitive.str.html#method.as_ptr [`u128::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.from_be_bytes [`u128::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.from_le_bytes [`u128::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.from_ne_bytes [`u128::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.to_be_bytes [`u128::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.to_le_bytes [`u128::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.to_ne_bytes [`u16::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.from_be_bytes [`u16::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.from_le_bytes [`u16::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.from_ne_bytes [`u16::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.to_be_bytes [`u16::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.to_le_bytes [`u16::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.to_ne_bytes [`u32::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.from_be_bytes [`u32::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.from_le_bytes [`u32::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.from_ne_bytes [`u32::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.to_be_bytes [`u32::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.to_le_bytes [`u32::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.to_ne_bytes [`u64::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.from_be_bytes [`u64::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.from_le_bytes [`u64::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.from_ne_bytes [`u64::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.to_be_bytes [`u64::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.to_le_bytes [`u64::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.to_ne_bytes [`u8::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.from_be_bytes [`u8::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.from_le_bytes [`u8::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.from_ne_bytes [`u8::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_be_bytes [`u8::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_le_bytes [`u8::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.to_ne_bytes [`usize::from_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.from_be_bytes [`usize::from_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.from_le_bytes [`usize::from_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.from_ne_bytes [`usize::to_be_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.to_be_bytes [`usize::to_le_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.to_le_bytes [`usize::to_ne_bytes`]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.to_ne_bytes

rust-highfive assigned eddyb Nov 19, 2018

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da-x mentioned this pull request Nov 19, 2018

Mention the literal macro matcher rust-lang/reference#468

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rust-highfive assigned petrochenkov and unassigned eddyb Nov 19, 2018

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Typo: fragmnet -> fragment

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These are not necessary in tests, you can just remove the feature.

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da-x force-pushed the stabilize-literal-matcher branch from b85d33a to cd5da5e Compare November 20, 2018 08:47

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Nov 20, 2018

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Nov 21, 2018

da-x force-pushed the stabilize-literal-matcher branch from 60c1c31 to c81eb0d Compare November 21, 2018 10:19

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Nov 21, 2018

bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Nov 21, 2018

da-x added 2 commits November 21, 2018 21:31

Stabilize macro_literal_matcher

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macro_literal_matcher: fixes per petrochenkov's review

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da-x force-pushed the stabilize-literal-matcher branch from c81eb0d to b8ae7b8 Compare November 21, 2018 19:34

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Nov 21, 2018

Centril added the relnotes Marks issues that should be documented in the release notes of the next release. label Nov 22, 2018

pietroalbini added a commit to pietroalbini/rust that referenced this pull request Nov 25, 2018

Rollup merge of rust-lang#56072 - da-x:stabilize-literal-matcher, r=p…

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…etrochenkov Stabilize macro_literal_matcher This followed FCP in rust-lang#35625. Closes rust-lang#35625

pietroalbini mentioned this pull request Nov 25, 2018

Rollup of 14 pull requests #56215

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bors merged commit b8ae7b8 into rust-lang:master Nov 25, 2018

da-x deleted the stabilize-literal-matcher branch November 25, 2018 20:10

Centril added this to the 1.32 milestone Apr 26, 2019

mystor mentioned this pull request Jan 4, 2020

feat(wasm): run a "hello world" wasm under an interpreter hawkw/mycelium#58

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Stabilize macro_literal_matcher #56072

Stabilize macro_literal_matcher #56072

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