Updated Release notes for 1.22.0 #45454
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| Version 1.22.0 (2017-11-23) | ||
| ========================== | ||
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| Language | ||
| -------- | ||
| - [`non_snake_case` lint now allows extern no-mangle functions][44966] | ||
| - [Now accepts underscores in unicode escapes][43716] | ||
| - [`#![feature(const_fn)]` is now no longer required for | ||
| calling const functions.][43017] It's still required for creating | ||
| constant functions. | ||
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| Compiler | ||
| -------- | ||
| - [rustc now defaults to having 16 codegen units at debug on supported platforms.][45064] | ||
| - [rustc will no longer inline in codegen units when compiling for debug][45075] | ||
| This should decrease compile times for debug builds. | ||
| - [strict memory alignment now enabled on ARMv6][45094] | ||
| - [Remove support for the PNaCl target `le32-unknown-nacl`][45041] | ||
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| Libraries | ||
| --------- | ||
| - [Allow atomic operations up to 32 bits | ||
| on `armv5te_unknown_linux_gnueabi`][44978] | ||
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There was a problem hiding this comment. GitHub isn't rendering this link -- perhaps it can't be multiline? There was a problem hiding this comment. I can't replicate this. It's a working link for me. Are you getting still getting this? |
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| - [`Box<Error>` now impls `From<Cow<str>>`][44466] | ||
| - [`std::mem::Discriminant` is now guaranteed to be `Send + Sync`][45095] | ||
| - [`fs::copy` now returns the length of the main stream on NTFS.][44895] | ||
| - [Properly detect overflow in `Instant += Duration`.][44220] | ||
| - [impl `Hasher` for `{&mut Hasher, Box<Hasher>}`][44015] | ||
| - [impl `fmt::Debug` for `SplitWhitespace`.][44303] | ||
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| Stabilized APIs | ||
| --------------- | ||
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| Cargo | ||
| ----- | ||
| - [Cargo will now build multi file examples in subdirectories of the `examples` | ||
| folder that have a `main.rs` file.][cargo/4496] | ||
| - [Changed `[root]` to `[package]` in `Cargo.lock`][cargo/4571] Packages with | ||
| the old format will continue to work and can be updated with `cargo update`. | ||
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There was a problem hiding this comment. Don't forget rust-lang/cargo#3992 which is IMO the most important addition to cargo in the current release. There was a problem hiding this comment. (the entry has been added since but github doesn't show that) |
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| - [Now supports vendoring git repositories][cargo/3992] | ||
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| Misc | ||
| ---- | ||
| - [`libbacktrace` is now available on Apple platforms.][44251] | ||
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There was a problem hiding this comment.
Never mind, a fix without reverting was found. |
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| - [Stabilised the `compile_fail` attribute for code fences.][43949] This now | ||
| lets you specify that a given code example will fail to compile. | ||
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| Compatibility Notes | ||
| ------------------- | ||
| - [The minimum Android version that rustc can build for has been bumped to `4.0` from `2.3`][45656] | ||
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| [45075]: https://github.com/rust-lang/rust/pull/45075 | ||
| [45094]: https://github.com/rust-lang/rust/pull/45094 | ||
| [45095]: https://github.com/rust-lang/rust/pull/45095 | ||
| [45064]: https://github.com/rust-lang/rust/pull/45064 | ||
| [44895]: https://github.com/rust-lang/rust/pull/44895 | ||
| [44966]: https://github.com/rust-lang/rust/pull/44966 | ||
| [44978]: https://github.com/rust-lang/rust/pull/44978 | ||
| [45041]: https://github.com/rust-lang/rust/pull/45041 | ||
| [44466]: https://github.com/rust-lang/rust/pull/44466 | ||
| [44220]: https://github.com/rust-lang/rust/pull/44220 | ||
| [44251]: https://github.com/rust-lang/rust/pull/44251 | ||
| [44303]: https://github.com/rust-lang/rust/pull/44303 | ||
| [43949]: https://github.com/rust-lang/rust/pull/43949 | ||
| [44015]: https://github.com/rust-lang/rust/pull/44015 | ||
| [43716]: https://github.com/rust-lang/rust/pull/43716 | ||
| [43017]: https://github.com/rust-lang/rust/pull/43017 | ||
| [45656]: https://github.com/rust-lang/rust/pull/45656 | ||
| [cargo/3992]: https://github.com/rust-lang/cargo/pull/3992 | ||
| [cargo/4496]: https://github.com/rust-lang/cargo/pull/4496 | ||
| [cargo/4571]: https://github.com/rust-lang/cargo/pull/4571 | ||
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| Version 1.21.0 (2017-10-12) | ||
| ========================== | ||
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Individual const functions are still unstable one by one — is there any of them that are stable in Rust 1.22?
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I think
mem::size_of?There was a problem hiding this comment.
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That would be amazing, but const size_of is not stabilized in current nighly.
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cc @durka Do you know any?
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There are none so far. We only put the infrastructure in place for doing them individually. I thought size_of was imminent though, what happened?
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@Aaronepower Can we remove this line about const functions? Since it has no user-visible effect in Rust 1.22
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@bluss Well shouldn't it still be included since this is when it was stabilised?
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What's misleading about the current bullet point is you still need a feature gate for calling const fns, just a different one (in fact a different one per fn now). So you can't do anything on stable that you couldn't before.
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I agree with durka here, it's nothing user-visible (unfortunately) for the Rust 1.22.0 release.