Update books
## nomicon
4 commits in 8551afbb2ca6f5ea37fe58380318b209785e4e02..55de6fa3c1f331774da19472c9ee57d2ae9eb039
2021-04-01 21:58:50 +0900 to 2021-05-12 00:31:01 +0900
- Clarify some of the language around marking traits safe/unsafe. (rust-lang-nursery/nomicon#268)
- Use pointer 'add' instead of 'offset' (rust-lang-nursery/nomicon#265)
- Adjust Vec to build on stable Rust (rust-lang-nursery/nomicon#223)
- Update link to c++ atomic ordering docs (rust-lang-nursery/nomicon#264)
## reference
3 commits in d23f9da8469617e6c81121d9fd123443df70595d..5aa457bf1b54bd2cd5d4cf49797f29299bdf89a7
2021-04-28 11:16:44 -0700 to 2021-05-05 08:39:22 -0700
- Explicitly state result of compound assignment (rust-lang-nursery/reference#1013)
- Adjust the definition of `target_family` (rust-lang-nursery/reference#1006)
- Fix typo in `Traits` (rust-lang-nursery/reference#1012)
## book
2 commits in 50dd06cb71beb27fdc0eebade5509cdcc1f821ed..55a26488ddefc8433e73a2e8352d70f7a5c7fc2b
2021-04-23 13:21:54 -0500 to 2021-05-09 12:03:18 -0500
- Past-tensify "lead" -> "led" (rust-lang/book#2717)
- Merge pull request rust-lang/book#2718 from rust-lang/update-rustc
## rust-by-example
2 commits in e0a721f5202e6d9bec0aff99f10e44480c0da9e7..5f8c6da200ada77760a2fe1096938ef58151c9a6
2021-04-27 09:32:15 -0300 to 2021-04-29 08:08:01 -0300
- Fix Typo in LRBE section; closesrust-lang/rust-by-example#1434 (rust-lang/rust-by-example#1437)
- Add some tests to cargo/test.md. Partially addresses rust-lang/rust-by-example#1304 (rust-lang/rust-by-example#1438)
## rustc-dev-guide
3 commits in e72b43a64925ce053dc7830e21c1a57ba00499bd..1e6c7fbda4c45e85adf63ff3f82fa9c870b1447f
2021-04-27 12:35:37 -0700 to 2021-05-10 13:38:24 +0900
- Unified CPU Requirements (rust-lang/rustc-dev-guide#1126)
- add 'waiting-for-review' incantation to main contrib page (rust-lang/rustc-dev-guide#1124)
- Link to Zulip search for finding the most recent check-in (rust-lang/rustc-dev-guide#1118)
Update documentation for SharedContext::maybe_collapsed_doc_value
Fixes#85120.
The `doc-collapse` was removed, however, the main crate is always "collapsed", meaning that this function is still needed. I updated the documentation instead to avoid misleading readers.
r? `@jsha`
Move global click handlers to per-element ones.
In rustdoc's main.js, we had an onclick handler for the whole document that would dispatch to handlers for various elements. This change attaches the handlers to the elements that trigger them, instead. This simplifies the code and avoids reimplementing the browser's bubbling functionality.
As part of this change, change from a class to an id for help button.
Move the handlers and associated code for highlighting source lines into source-script.js (and factor out a shared regex).
Demo at https://hoffman-andrews.com/rust/bubble-bubble-toil-and-trouble/std/string/struct.String.html
Note: this conflicts with / depends on #85074. Once that's merged I'll rebase this and resolve conflicts.
Part of #83332. Thanks to `@Manishearth` for the [suggestion to not reimplement bubbling](https://github.com/rust-lang/rust/issues/83332#issuecomment-803497509).
r? `@GuillaumeGomez`
Recover from invalid `struct` item syntax
Parse unsupported "default field const values":
```rust
struct S {
field: Type = const_val,
}
```
Recover from small `:` typo and provide suggestion:
```rust
struct S {
field; Type,
field2= Type,
}
```
Add auto traits and clone trait migrations for RFC2229
This PR
- renames the existent RFC2229 migration `disjoint_capture_drop_reorder` to `disjoint_capture_migration`
- add additional migrations for auto traits and clone trait
Closesrust-lang/project-rfc-2229#29Closesrust-lang/project-rfc-2229#28
r? `@nikomatsakis`
Fix `--remap-path-prefix` not correctly remapping `rust-src` component paths and unify handling of path mapping with virtualized paths
This PR fixes#73167 ("Binaries end up containing path to the rust-src component despite `--remap-path-prefix`") by preventing real local filesystem paths from reaching compilation output if the path is supposed to be remapped.
`RealFileName::Named` introduced in #72767 is now renamed as `LocalPath`, because this variant wraps a (most likely) valid local filesystem path.
`RealFileName::Devirtualized` is renamed as `Remapped` to be used for remapped path from a real path via `--remap-path-prefix` argument, as well as real path inferred from a virtualized (during compiler bootstrapping) `/rustc/...` path. The `local_path` field is now an `Option<PathBuf>`, as it will be set to `None` before serialisation, so it never reaches any build output. Attempting to serialise a non-`None` `local_path` will cause an assertion faliure.
When a path is remapped, a `RealFileName::Remapped` variant is created. The original path is preserved in `local_path` field and the remapped path is saved in `virtual_name` field. Previously, the `local_path` is directly modified which goes against its purpose of "suitable for reading from the file system on the local host".
`rustc_span::SourceFile`'s fields `unmapped_path` (introduced by #44940) and `name_was_remapped` (introduced by #41508 when `--remap-path-prefix` feature originally added) are removed, as these two pieces of information can be inferred from the `name` field: if it's anything other than a `FileName::Real(_)`, or if it is a `FileName::Real(RealFileName::LocalPath(_))`, then clearly `name_was_remapped` would've been false and `unmapped_path` would've been `None`. If it is a `FileName::Real(RealFileName::Remapped{local_path, virtual_name})`, then `name_was_remapped` would've been true and `unmapped_path` would've been `Some(local_path)`.
cc `@eddyb` who implemented `/rustc/...` path devirtualisation
Fix `--remap-path-prefix` not correctly remapping `rust-src` component paths and unify handling of path mapping with virtualized paths
This PR fixes#73167 ("Binaries end up containing path to the rust-src component despite `--remap-path-prefix`") by preventing real local filesystem paths from reaching compilation output if the path is supposed to be remapped.
`RealFileName::Named` introduced in #72767 is now renamed as `LocalPath`, because this variant wraps a (most likely) valid local filesystem path.
`RealFileName::Devirtualized` is renamed as `Remapped` to be used for remapped path from a real path via `--remap-path-prefix` argument, as well as real path inferred from a virtualized (during compiler bootstrapping) `/rustc/...` path. The `local_path` field is now an `Option<PathBuf>`, as it will be set to `None` before serialisation, so it never reaches any build output. Attempting to serialise a non-`None` `local_path` will cause an assertion faliure.
When a path is remapped, a `RealFileName::Remapped` variant is created. The original path is preserved in `local_path` field and the remapped path is saved in `virtual_name` field. Previously, the `local_path` is directly modified which goes against its purpose of "suitable for reading from the file system on the local host".
`rustc_span::SourceFile`'s fields `unmapped_path` (introduced by #44940) and `name_was_remapped` (introduced by #41508 when `--remap-path-prefix` feature originally added) are removed, as these two pieces of information can be inferred from the `name` field: if it's anything other than a `FileName::Real(_)`, or if it is a `FileName::Real(RealFileName::LocalPath(_))`, then clearly `name_was_remapped` would've been false and `unmapped_path` would've been `None`. If it is a `FileName::Real(RealFileName::Remapped{local_path, virtual_name})`, then `name_was_remapped` would've been true and `unmapped_path` would've been `Some(local_path)`.
cc `@eddyb` who implemented `/rustc/...` path devirtualisation
It is unergnomic to have to say things like
bad.into_status().signal()
Implementing `ExitStatusExt` for `ExitStatusError` fixes this.
Unfortunately it does mean making a previously-infallible method
capable of panicing, although of course the existing impl remains
infallible.
The alternative would be a whole new `ExitStatusErrorExt` trait.
`<ExitStatus as ExitStatusExt>::into_raw()` is not particularly
ergonomic to call because of the often-required type annotation.
See for example the code in the test case in
library/std/src/sys/unix/process/process_unix/tests.rs
Perhaps we should provide equivalent free functions for `ExitStatus`
and `ExitStatusExt` in std::os::unix::process and maybe deprecate this
trait method. But I think that is for the future.
Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
