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Rollup of 8 pull requests
Successful merges:
- #82774 (Fix bad diagnostics for anon params with ref and/or qualified paths)
- #82826 ((std::net::parser): Fix capitalization of IP version names)
- #83092 (More precise spans for HIR paths)
- #83124 (Do not insert impl_trait_in_bindings opaque definitions twice.)
- #83202 (Show details in cfg version unstable book)
- #83203 (Don't warn about old rustdoc lint names (temporarily))
- #83206 (Update books)
- #83219 (Update cargo)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Update cargo
8 commits in 32da9eaa5de5be241cf8096ca6b749a157194f77..90691f2bfe9a50291a98983b1ed2feab51d5ca55
2021-03-13 01:18:40 +0000 to 2021-03-16 21:36:55 +0000
- Add report if `cargo fix --edition` changes features. (rust-lang/cargo#9268)
- Fix --feature pkg/feat for V1 resolver for non-member. (rust-lang/cargo#9275)
- Fix doc duplicate removal of root units. (rust-lang/cargo#9276)
- Add CLI help text for patch-in-config (rust-lang/cargo#9271)
- Document `-Zpatch-in-config` (rust-lang/cargo#9270)
- Support [patch] in .cargo/config files (rust-lang/cargo#9204)
- Add `--future-incompat-report` support to `cargo test` (rust-lang/cargo#9264)
- 🍱 Crop favicon (rust-lang/cargo#9262)
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Update books
## nomicon
1 commits in adca786547d08fe676b2fc7a6f08c2ed5280ca38..6fe476943afd53a9a6e91f38a6ea7bb48811d8ff
2021-02-16 16:34:20 +0900 to 2021-03-10 07:28:57 +0900
- Merge pull request rust-lang-nursery/nomicon#257 from skade/opaque-types-fix
## reference
3 commits in 3b6fe80c205d2a2b5dc8a276192bbce9eeb9e9cf..e32a2f928f8b78d534bca2b9e7736413314dc556
2021-02-22 22:09:17 -0800 to 2021-03-08 23:24:30 -0800
- Clarify that ::foo paths are not necessarily based off of the "crate root" (rust-lang-nursery/reference#974)
- Comment typo (rust-lang-nursery/reference#977)
- Fix misspelled word discrimnant (rust-lang-nursery/reference#976)
## book
2 commits in 0f87daf683ae3de3cb725faecb11b7e7e89f0e5a..fc2f690fc16592abbead2360cfc0a42f5df78052
2021-03-01 08:54:04 -0500 to 2021-03-05 14:03:22 -0500
- Fix wrapping
- fix: redundant double introduction of shadowing (rust-lang/book#2633)
## rust-by-example
1 commits in 3e0d98790c9126517fa1c604dc3678f396e92a27..eead22c6c030fa4f3a167d1798658c341199e2ae
2021-02-25 08:23:10 -0300 to 2021-03-04 16:26:43 -0300
- Fix grammar "terminates" -> "terminate" (rust-lang/rust-by-example#1423)
## rustc-dev-guide
15 commits in c431f8c29a41413dddcb3bfa0d71c9cabe366317..67ebd4b55dba44edfc351621cef6e5e758169c55
2021-02-28 16:35:20 -0500 to 2021-03-11 13:36:25 -0800
- Remove extra the (rust-lang/rustc-dev-guide#1088)
- Fix double-word typos (rust-lang/rustc-dev-guide#1084)
- I-nominated are nominated for discussion (rust-lang/rustc-dev-guide#1080)
- Complete unfinished statement
- Check `BASE_SHA` only if it's a PR (rust-lang/rustc-dev-guide#1083)
- Update lins
- Apply suggestions from code review
- Add stub about the THIR
- Switch from Travis to GHA (rust-lang/rustc-dev-guide#1073)
- Adjust a bit better P- label text
- Fix typos (rust-lang/rustc-dev-guide#1079)
- Update cmake version in prerequisites.md (rust-lang/rustc-dev-guide#1077)
- Fix typo: suceed -> succeed
- Add article on using WPA to profile rustc memory usage on Windows (rust-lang/rustc-dev-guide#1074)
- Use more accurate estimate of generated LLVM IR with llvm-lines
## embedded-book
1 commits in a96d096cffe5fa2c84af1b4b61e1492f839bb2e1..f61685755fad7d3b88b4645adfbf461d500563a2
2021-02-17 08:08:52 +0000 to 2021-03-08 01:06:44 +0000
- Swap to GHA (rust-embedded/book#285)
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Don't warn about old rustdoc lint names (temporarily)
Since https://github.com/rust-lang/rust/pull/80527, rustdoc users have an unpleasant situation: they can either use the new tool lint names (`rustdoc::non_autolinks`) or they can use the old names (`non_autolinks`). If they use the tool lints, they get a hard error on stable compilers, because rustc rejects all tool names it doesn't recognize (https://github.com/rust-lang/rust/issues/66079#issuecomment-788589193). If they use the old name, they get a warning to rename the lint to the new name. The only way to compile without warnings is to add `#[allow(renamed_removed_lints)]`, which defeats the whole point of the change: we *want* people to switch to the new name.
To avoid people silencing the lint and never migrating to the tool lint, this avoids warning about the old name, while still allowing you to use the new name. Once the new `rustdoc` tool name makes it to the stable channel, we can change these lints to warn again.
This adds the new lint functions `register_alias` and `register_ignored` - I didn't see an existing way to do this.
r? `@Manishearth` cc `@rust-lang/rustdoc`
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Show details in cfg version unstable book
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More precise spans for HIR paths
`Ty::assoc_item` is lowered to `<Ty>::assoc_item` in HIR, but `Ty` got span from the whole path.
This PR fixes that, and adjusts some diagnostic code that relied on `Ty` having the whole path span.
This is a pre-requisite for https://github.com/rust-lang/rust/pull/82868 (we cannot report suggestions like `Tr::assoc` -> `<dyn Tr>::assoc` with the current imprecise spans).
r? ````@estebank````
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Adjust `-Ctarget-cpu=native` handling in cg_llvm
When cg_llvm encounters the `-Ctarget-cpu=native` it computes an
explciit set of features that applies to the target in order to
correctly compile code for the host CPU (because e.g. `skylake` alone is
not sufficient to tell if some of the instructions are available or
not).
However there were a couple of issues with how we did this. Firstly, the
order in which features were overriden wasn't quite right – conceptually
you'd expect `-Ctarget-cpu=native` option to override the features that
are implicitly set by the target definition. However due to how other
`-Ctarget-cpu` values are handled we must adopt the following order
of priority:
* Features from -Ctarget-cpu=*; are overriden by
* Features implied by --target; are overriden by
* Features from -Ctarget-feature; are overriden by
* function specific features.
Another problem was in that the function level `target-features`
attribute would overwrite the entire set of the globally enabled
features, rather than just the features the
`#[target_feature(enable/disable)]` specified. With something like
`-Ctarget-cpu=native` we'd end up in a situation wherein a function
without `#[target_feature(enable)]` annotation would have a broader
set of features compared to a function with one such attribute. This
turned out to be a cause of heavy run-time regressions in some code
using these function-level attributes in conjunction with
`-Ctarget-cpu=native`, for example.
With this PR rustc is more careful about specifying the entire set of
features for functions that use `#[target_feature(enable/disable)]` or
`#[instruction_set]` attributes.
Sadly testing the original reproducer for this behaviour is quite
impossible – we cannot rely on `-Ctarget-cpu=native` to be anything in
particular on developer or CI machines.
cc https://github.com/rust-lang/rust/issues/83027 `@BurntSushi`
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When cg_llvm encounters the `-Ctarget-cpu=native` it computes an
explciit set of features that applies to the target in order to
correctly compile code for the host CPU (because e.g. `skylake` alone is
not sufficient to tell if some of the instructions are available or
not).
However there were a couple of issues with how we did this. Firstly, the
order in which features were overriden wasn't quite right – conceptually
you'd expect `-Ctarget-cpu=native` option to override the features that
are implicitly set by the target definition. However due to how other
`-Ctarget-cpu` values are handled we must adopt the following order
of priority:
* Features from -Ctarget-cpu=*; are overriden by
* Features implied by --target; are overriden by
* Features from -Ctarget-feature; are overriden by
* function specific features.
Another problem was in that the function level `target-features`
attribute would overwrite the entire set of the globally enabled
features, rather than just the features the
`#[target_feature(enable/disable)]` specified. With something like
`-Ctarget-cpu=native` we'd end up in a situation wherein a function
without `#[target_feature(enable)]` annotation would have a broader
set of features compared to a function with one such attribute. This
turned out to be a cause of heavy run-time regressions in some code
using these function-level attributes in conjunction with
`-Ctarget-cpu=native`, for example.
With this PR rustc is more careful about specifying the entire set of
features for functions that use `#[target_feature(enable/disable)]` or
`#[instruction_set]` attributes.
Sadly testing the original reproducer for this behaviour is quite
impossible – we cannot rely on `-Ctarget-cpu=native` to be anything in
particular on developer or CI machines.
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2229: Handle patterns within closures correctly when `capture_disjoint_fields` is enabled
This PR fixes several issues related to handling patterns within closures when `capture_disjoint_fields` is enabled.
1. Matching is always considered a use of the place, even with `_` patterns
2. Compiler ICE when capturing fields in closures through `let` assignments
To do so, we
- Introduced new Fake Reads
- Delayed use of `Place` in favor of `PlaceBuilder`
- Ensured that `PlaceBuilder` can be resolved before attempting to extract `Place` in any of the pattern matching code
Closes rust-lang/project-rfc-2229/issues/27
Closes rust-lang/project-rfc-2229/issues/24
r? `@nikomatsakis`
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Right now, rustdoc users have an unpleasant situation: they can either
use the new tool lint names (`rustdoc::non_autolinks`) or they can use
the old names (`non_autolinks`). If they use the tool lints, they get a
hard error on stable compilers, because rustc rejects all tool names it
doesn't recognize. If they use the old name, they get a warning to
rename the lint to the new name. The only way to compile without
warnings is to add `#[allow(renamed_removed_lints)]`, which defeats the
whole point of the change: we *want* people to switch to the new name.
To avoid people silencing the lint and never migrating to the tool lint,
this avoids warning about the old name, while still allowing you to use
the new name. Once the new `rustdoc` tool name makes it to the stable
channel, we can change these lints to warn again.
This adds the new lint functions `register_alias` and `register_ignored`
- I didn't see an existing way to do this.
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Use delay_span_bug instead of panic in layout_scalar_valid_range
#83054 introduced validation of scalar range attributes, but panicking
code that uses the attribute remained reachable. Use `delay_span_bug`
instead to avoid the ICE.
Fixes #83180.
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pnkfelix:bootstrap-tell-me-what-to-do-about-tidy-on-beta, r=Mark-Simulacrum
More informative diagnotic from `x.py test` attempt atop beta checkout
Make bootstrap be more informative when one does `x.py test` on a beta checkout without other mods.
To be clear, by default running `x.py test` on a checkout of the beta branch
currently fails, and with this change will continue to fail, because `x.py
tests` runs `x.py test src/tools/tidy` which tries to run `rustfmt` and that
will fail because the `rustfmt` binary is pinned to the current nighlty and we
do not attempt to distribute one for the beta builds.
This change gives a better error message than the current message, which is just
"./x.py fmt is not supported on this channel" without providing any hint about
what one might do about that problem.
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No background for code in portability snippets
This better matches the appearance of this kind of snippet in the full
item view and is less jarring to read due to repeated
foreground-background changes.
There should be no observable changes to the ayu theme.
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Fall-back to sans-serif if Arial is not available
Otherwise on systems where Arial is not available the UA will
fallback to a serif font, rather than a sans-serif one.
This is especially relevant on acessibility-conscious setups (such as is
mine) that have web-fonts disabled and a limited set of fonts available
on the system.
r? ```@GuillaumeGomez``` cc ```@jsha```
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rustdoc: reduce GC work during search
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Allow rustdoc to handle asm! of foreign architectures
This allows rustdoc to process code containing `asm!` for architectures other than the current one. Since this never reaches codegen, we just replace target-specific registers and register classes with a dummy one.
Fixes #82869
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Add a `min_type_alias_impl_trait` feature gate
This new feature gate only permits type alias impl trait to be constrained by function and trait method return types. All other possible constraining sites like const/static types, closure return types and binding types are now forbidden and gated under the `type_alias_impl_trait` and `impl_trait_in_bindings` feature gates (which are both marked as incomplete, as they have various ways to ICE the compiler or cause query cycles where they shouldn't).
r? `@nikomatsakis`
This is best reviewed commit-by-commit
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checkout without other mods.
To be clear, by default running `x.py test` on a checkout of the beta branch
currently fails, and with this change will continue to fail, because `x.py
tests` runs `x.py test src/tools/tidy` which tries to run `rustfmt` and that
will fail because the `rustfmt` binary is pinned to the current nighlty and we
do not attempt to distribute one for the beta builds.
This change gives a better error message than the current message, which is just
"./x.py fmt is not supported on this channel" without providing any hint about
what one might do about that problem.
(update: placated tidy.)
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83054 introduced validation of scalar range attributes, but panicking
code that uses the attribute remained reachable. Use `delay_span_bug`
instead to avoid the ICE.
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This better matches the appearance of this kind of snippet in the full
item view and is less jarring to read due to repeated
foreground-background changes.
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actual changes in behaviour
This makes `type_alias_impl_trait` not actually do anything anymore
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Otherwise on systems where Arial is not available the system will
fallback to a serif font, rather than a sans-serif one.
This is especially relevant on acessibility-conscious setups (such as is
mine) that have web-fonts disabled and a limited set of fonts available
on the system.
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Introduce `rustc_interface::interface::Config::parse_sess_created` callback
Resolves #82900.
cc `@oli-obk`
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:arrow_up: rust-analyzer
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Don't encode file information for span with a dummy location
Fixes #83112
The location information for a dummy span isn't real, so don't encode
it. This brings the incr comp cache code into line with the Span
`StableHash` impl, which doesn't hash the location information for dummy
spans.
Previously, we would attempt to load the 'original' file from a dummy
span - if the file id changed (e.g. due to being moved on disk), we would get an
ICE, since the Span was still valid due to its hash being unchanged.
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Introduce `proc_macro_back_compat` lint, and emit for `time-macros-impl`
Now that future-incompat-report support has landed in nightly Cargo, we
can start to make progress towards removing the various proc-macro
back-compat hacks that have accumulated in the compiler.
This PR introduces a new lint `proc_macro_back_compat`, which results in
a future-incompat-report entry being generated. All proc-macro
back-compat warnings will be grouped under this lint. Note that this
lint will never actually become a hard error - instead, we will remove
the special cases for various macros, which will cause older versions of
those crates to emit some other error.
I've added code to fire this lint for the `time-macros-impl` case. This
is the easiest case out of all of our current back-compat hacks - the
crate was renamed to `time-macros`, so seeing a filename with
`time-macros-impl` guarantees that an older version of the parent `time`
crate is in use.
When Cargo's future-incompat-report feature gets stabilized, affected
users will start to see future-incompat warnings when they build their
crates.
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Find more invalid doc attributes
- Lint on `#[doc(123)]`, `#[doc("hello")]`, etc.
- Lint every attribute; e.g., will now report two warnings for `#[doc(foo, bar)]`
- Add hyphen to "crate level"
- Display paths like `#[doc(foo::bar)]` correctly instead of as an empty string
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Validate rustc_layout_scalar_valid_range_{start,end} attributes
Fixes #82251, fixes #82981.
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Custom error on literal names from other languages
This detects all Java literal types and all single word C data types, and suggests the corresponding Rust literal type.
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This detects all Java literal types and all single word C data types,
and suggests the corresponding Rust literal type.
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