Rollup of 10 pull requests #79377
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Rollup of 10 pull requests #79377
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This gets rid of a bunch of `unwrap()`s and makes it a little more clear what's going on. Originally I wanted to make `fold_item` non-nullable too, which would have been a lot nicer to work with, but unfortunately `stripper` does actually return `None` in some places. I might make a follow-up moving stripper to be special and not a pass so that passes can be non-nullable.
This will allow linking to things like `Result<T, !>`.
Change `-Z fewer-names` into an optional boolean flag and allow using it to either discard value names when true or retain them when false, regardless of other settings.
This is useful for embedded targets where small code size is desired. For example, on my project (thumbv7em-none-eabi) this yields a 0.6% code size reduction.
This section documents the exploit mitigations applicable to the Rust compiler when building programs for the Linux operating system on the AMD64 architecture and equivalent.
…veklabnik Add exploit mitigations chapter to the rustc book This section documents the exploit mitigations applicable to the Rust compiler when building programs for the Linux operating system on the AMD64 architecture and equivalent. This was done for a project I'm currently working on, and I hope it'll also be helpful to others.
Make `fold_item_recur` non-nullable This gets rid of a bunch of `unwrap()`s and makes it a little more clear what's going on. Originally I wanted to make `fold_item` non-nullable too, which would have been a lot nicer to work with, but unfortunately `stripper` does actually return `None` in some places. I might make a follow-up moving stripper to be special and not a pass so that passes can be non-nullable. Found while working on #76998.
Accept '!' in intra-doc links This will allow linking to things like `Result<T, !>`. *See <https://github.com/rust-lang/rust/pull/77832#discussion_r528409079>.* r? ``@jyn514``
Allow using `-Z fewer-names=no` to retain value names Change `-Z fewer-names` into an optional boolean flag and allow using it to either discard value names when true or retain them when false, regardless of other settings.
Fix typo in `keyword` docs for traits This PR fixes a small typo in the `keyword_docs.rs` file, describing the differences between the 2015 and 2018 editions of traits.
…lacrum BTreeMap: cut out the ceremony around BoxedNode The opposite direction of #79093. r? ``@Mark-Simulacrum``
Allow disabling TrapUnreachable via -Ztrap-unreachable=no Currently this is only possible by defining a custom target, which is quite unwieldy. This is useful for embedded targets where small code size is desired. For example, on my project (thumbv7em-none-eabi) this yields a 0.6% code size reduction: 132892 bytes -> 132122 bytes (770 bytes down).
Add note to use nightly when using expr in const generics As recommended by `@Icnr` in #73899 and in zulip, I've added a note saying that const expressions can be used in nightly. ``` error: generic parameters may not be used in const operations --> $DIR/issue-61935.rs:10:23 | 6 | Self:FooImpl<{N==0}> | ^ cannot perform const operation using `N` | = help: const parameters may only be used as standalone arguments, i.e. `N` = note: use feature(const_generics) and feature(const_evaluatable_checked) to enable this error: aborting due to previous error ``` I hope the note is well written :sweat_smile:
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This was referenced Nov 24, 2020
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Successful merges:
fold_item_recurnon-nullable #79310 (Makefold_item_recurnon-nullable)doctree::Impl#79312 (Get rid ofdoctree::Impl)-Z fewer-names=noto retain value names #79346 (Allow using-Z fewer-names=noto retain value names)keyworddocs for traits #79351 (Fix typo inkeyworddocs for traits)Failed merges:
r? @ghost
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