stabilize cfg_attr_multi #57332

Dylan-DPC-zz · 2019-01-04T07:16:42Z

Stabilizes cfg_attr_multi feature

Related to #54881

Will add the lint in a seperate PR

r? @Centril

src/test/ui/conditional-compilation/cfg-attr-multi-false.rs

src/test/ui/conditional-compilation/cfg-attr-parse.rs

src/libsyntax/feature_gate.rs

Centril · 2019-01-04T21:32:40Z

You have some merge conflicts that'll need to be resolved by rebasing; other than that it looks good.

Dylan-DPC-zz · 2019-01-05T07:05:57Z

Damn some issue with the rebase.. let me try again

src/test/ui/conditional-compilation/cfg-attr-multi-invalid-2.rs

Centril · 2019-01-08T05:39:37Z

Looks good; thanks!

Giving prio to this since it's a stabilization.

@bors r+ p=1

bors · 2019-01-08T05:39:37Z

📌 Commit 13f8ad8 has been approved by Centril

bors · 2019-01-08T07:49:23Z

⌛ Testing commit 13f8ad8 with merge 7ad470c...

@Centril

stabilize cfg_attr_multi Stabilizes cfg_attr_multi feature Related to #54881 Will add the lint in a seperate PR r? @Centril

bors · 2019-01-08T10:29:07Z

☀️ Test successful - status-appveyor, status-travis
Approved by: Centril
Pushing 7ad470c to master...

rust-highfive · 2019-01-08T10:31:51Z

📣 Toolstate changed by #57332!

Tested on commit 7ad470c.
Direct link to PR: #57332

💔 rls on linux: test-pass → test-fail (cc @nrc @Xanewok, @rust-lang/infra).

@nrc

Tested on commit rust-lang/rust@7ad470c. Direct link to PR: <rust-lang/rust#57332> 💔 rls on linux: test-pass → test-fail (cc @nrc @Xanewok, @rust-lang/infra).

Xanewok · 2019-01-08T10:40:44Z

I believe this is spurious, (un?)fortunately:

thread 'cmd_changing_workspace_lib_retains_bin_diagnostics' panicked at 'expected bin error diagnostic', src/libcore/option.rs:1040:5

Pkgsrc changes: * Bump required rust version to build to 1.32.0. * Adapt patches to changed file locations. * Since we now patch some more vendor/ modules, doctor the corresponding .cargo-checksum.json files accordingly Upstream changes: Version 1.33.0 (2019-02-28) ========================== Language -------- - [You can now use the `cfg(target_vendor)` attribute.][57465] E.g. `#[cfg(target_vendor="apple")] fn main() { println!("Hello Apple!"); }` - [Integer patterns such as in a match expression can now be exhaustive.][56362] E.g. You can have match statement on a `u8` that covers `0..=255` and you would no longer be required to have a `_ => unreachable!()` case. - [You can now have multiple patterns in `if let` and `while let` expressions.][57532] You can do this with the same syntax as a `match` expression. E.g. ```rust enum Creature { Crab(String), Lobster(String), Person(String), } fn main() { let state = Creature::Crab("Ferris"); if let Creature::Crab(name) | Creature::Person(name) = state { println!("This creature's name is: {}", name); } } ``` - [You can now have irrefutable `if let` and `while let` patterns.][57535] Using this feature will by default produce a warning as this behaviour can be unintuitive. E.g. `if let _ = 5 {}` - [You can now use `let` bindings, assignments, expression statements, and irrefutable pattern destructuring in const functions.][57175] - [You can now call unsafe const functions.][57067] E.g. ```rust const unsafe fn foo() -> i32 { 5 } const fn bar() -> i32 { unsafe { foo() } } ``` - [You can now specify multiple attributes in a `cfg_attr` attribute.][57332] E.g. `#[cfg_attr(all(), must_use, optimize)]` - [You can now specify a specific alignment with the `#[repr(packed)]` attribute.][57049] E.g. `#[repr(packed(2))] struct Foo(i16, i32);` is a struct with an alignment of 2 bytes and a size of 6 bytes. - [You can now import an item from a module as an `_`.][56303] This allows you to import a trait's impls, and not have the name in the namespace. E.g. ```rust use std::io::Read as _; // Allowed as there is only one `Read` in the module. pub trait Read {} ``` - [You may now use `Rc`, `Arc`, and `Pin` as method receivers][56805]. Compiler -------- - [You can now set a linker flavor for `rustc` with the `-Clinker-flavor` command line argument.][56351] - [The mininum required LLVM version has been bumped to 6.0.][56642] - [Added support for the PowerPC64 architecture on FreeBSD.][57615] - [The `x86_64-fortanix-unknown-sgx` target support has been upgraded to tier 2 support.][57130] Visit the [platform support][platform-support] page for information on Rust's platform support. - [Added support for the `thumbv7neon-linux-androideabi` and `thumbv7neon-unknown-linux-gnueabihf` targets.][56947] - [Added support for the `x86_64-unknown-uefi` target.][56769] Libraries --------- - [The methods `overflowing_{add, sub, mul, shl, shr}` are now `const` functions for all numeric types.][57566] - [The methods `rotate_left`, `rotate_right`, and `wrapping_{add, sub, mul, shl, shr}` are now `const` functions for all numeric types.][57105] - [The methods `is_positive` and `is_negative` are now `const` functions for all signed numeric types.][57105] - [The `get` method for all `NonZero` types is now `const`.][57167] - [The methods `count_ones`, `count_zeros`, `leading_zeros`, `trailing_zeros`, `swap_bytes`, `from_be`, `from_le`, `to_be`, `to_le` are now `const` for all numeric types.][57234] - [`Ipv4Addr::new` is now a `const` function][57234] Stabilized APIs --------------- - [`unix::FileExt::read_exact_at`] - [`unix::FileExt::write_all_at`] - [`Option::transpose`] - [`Result::transpose`] - [`convert::identity`] - [`pin::Pin`] - [`marker::Unpin`] - [`marker::PhantomPinned`] - [`Vec::resize_with`] - [`VecDeque::resize_with`] - [`Duration::as_millis`] - [`Duration::as_micros`] - [`Duration::as_nanos`] Cargo ----- - [Cargo should now rebuild a crate if a file was modified during the initial build.][cargo/6484] Compatibility Notes ------------------- - The methods `str::{trim_left, trim_right, trim_left_matches, trim_right_matches}` are now deprecated in the standard library, and their usage will now produce a warning. Please use the `str::{trim_start, trim_end, trim_start_matches, trim_end_matches}` methods instead. - The `Error::cause` method has been deprecated in favor of `Error::source` which supports downcasting. [55982]: rust-lang/rust#55982 [56303]: rust-lang/rust#56303 [56351]: rust-lang/rust#56351 [56362]: rust-lang/rust#56362 [56642]: rust-lang/rust#56642 [56769]: rust-lang/rust#56769 [56805]: rust-lang/rust#56805 [56947]: rust-lang/rust#56947 [57049]: rust-lang/rust#57049 [57067]: rust-lang/rust#57067 [57105]: rust-lang/rust#57105 [57130]: rust-lang/rust#57130 [57167]: rust-lang/rust#57167 [57175]: rust-lang/rust#57175 [57234]: rust-lang/rust#57234 [57332]: rust-lang/rust#57332 [57465]: rust-lang/rust#57465 [57532]: rust-lang/rust#57532 [57535]: rust-lang/rust#57535 [57566]: rust-lang/rust#57566 [57615]: rust-lang/rust#57615 [cargo/6484]: rust-lang/cargo#6484 [`unix::FileExt::read_exact_at`]: https://doc.rust-lang.org/std/os/unix/fs/trait.FileExt.html#method.read_exact_at [`unix::FileExt::write_all_at`]: https://doc.rust-lang.org/std/os/unix/fs/trait.FileExt.html#method.write_all_at [`Option::transpose`]: https://doc.rust-lang.org/std/option/enum.Option.html#method.transpose [`Result::transpose`]: https://doc.rust-lang.org/std/result/enum.Result.html#method.transpose [`convert::identity`]: https://doc.rust-lang.org/std/convert/fn.identity.html [`pin::Pin`]: https://doc.rust-lang.org/std/pin/struct.Pin.html [`marker::Unpin`]: https://doc.rust-lang.org/stable/std/marker/trait.Unpin.html [`marker::PhantomPinned`]: https://doc.rust-lang.org/nightly/std/marker/struct.PhantomPinned.html [`Vec::resize_with`]: https://doc.rust-lang.org/std/vec/struct.Vec.html#method.resize_with [`VecDeque::resize_with`]: https://doc.rust-lang.org/std/collections/struct.VecDeque.html#method.resize_with [`Duration::as_millis`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.as_millis [`Duration::as_micros`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.as_micros [`Duration::as_nanos`]: https://doc.rust-lang.org/std/time/struct.Duration.html#method.as_nanos [platform-support]: https://forge.rust-lang.org/platform-support.html

rust-highfive assigned Centril Jan 4, 2019

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Dylan-DPC-zz force-pushed the feature/stabilise-cfg-attr branch from f148a68 to fdc2f54 Compare January 5, 2019 08:45

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Dylan-DPC added 4 commits January 8, 2019 00:17

stabilise cfg_attr

1ef99f1

remove unused imports and feature gate from tests

64a17a0

remove unwanted stage0 line, fix style

6ddd2cd

bless you

13f8ad8

Dylan-DPC-zz force-pushed the feature/stabilise-cfg-attr branch from 268204a to 13f8ad8 Compare January 7, 2019 18:53

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Auto merge of #57332 - Dylan-DPC:feature/stabilise-cfg-attr, r=Centril

7ad470c

stabilize cfg_attr_multi Stabilizes cfg_attr_multi feature Related to #54881 Will add the lint in a seperate PR r? @Centril

bors merged commit 13f8ad8 into rust-lang:master Jan 8, 2019

bors mentioned this pull request Jan 8, 2019

Stabilize let bindings and destructuring in constants and const fn #57175

Merged

bors mentioned this pull request Jan 8, 2019

Stabilize extern_crate_self #57407

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Dylan-DPC-zz deleted the feature/stabilise-cfg-attr branch January 8, 2019 17:11

This was referenced Jan 8, 2019

Document RFC 2539 (#[cfg_attr(p, attr1, attr2)]) rust-lang/reference#500

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Tracking issue for RFC 2539, "#[cfg_attr] expanding to multiple attributes" #54881

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Centril added the T-lang label Jan 10, 2019

Centril added this to the 1.33 milestone Apr 26, 2019

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stabilize cfg_attr_multi #57332

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stabilize cfg_attr_multi #57332

stabilize cfg_attr_multi #57332

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