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Save crate filtering on rustdoc
Fixes #62929.
I added a hashmap and a hash encoding for the current crate list in case you have multiple crates handling on a same website (who talked about docs.rs?!). Like that, for each context, you have the filter crate selected.
r? @QuietMisdreavus
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debuginfo: give unique names to closure and generator types
Closure types have been moved to the namespace where they
are defined, and both closure and generator type names now
include the disambiguator.
This fixes an exception when lldb prints nested closures.
Fixes #57822
I haven't included the `DW_AT_artificial` changes discussed in #57822 because they make the output worse IMO, but I can easily add these if still required. For example, for the new test case the output is now:
```
(lldb) p g
(issue_57822::main::closure-1) $1 = closure-1(closure(1))
```
but adding `DW_AT_artificial` changes this to:
```
(lldb) p g
(issue_57822::main::closure-1) $0 = closure-1 {
}
```
Note that nested generators didn't cause the exception. I haven't determined why, but I think it makes sense to add the disambiguator for them too. It feels like we still don't really understand why closures were causing an error though.
r? @michaelwoerister
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Add default serialization for `Ident`s
Also add tests for `-Zast-json` and `-Zast-json-noexpand`
closes #63728
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Simplify eager normalization of constants
r? @nikomatsakis
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Cleanup: Consistently use `Param` instead of `Arg` #62426
Fixes #62426
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Update cargo
Update cargo
10 commits in 3f700ec43ce72305eb5315cfc710681f3469d4b4..22f7dd0495cd72ce2082d318d5a9b4dccb9c5b8c
2019-08-19 22:43:12 +0000 to 2019-08-27 16:10:51 +0000
- Update and improve zsh completion (rust-lang/cargo#7296)
- Document that `package` can be used in `[patch]` (rust-lang/cargo#7263)
- Fix `error:`/`warning:` coloring inconsistency with rustc (rust-lang/cargo#7294)
- Tests: Import rustc_plugin from its new location (rust-lang/cargo#7287)
- Update README azure badge. (rust-lang/cargo#7293)
- Update home dependencies to v0.5 (rust-lang/cargo#7277)
- Fix typo (rust-lang/cargo#7279)
- Update libgit2 dependencies (rust-lang/cargo#7275)
- Fix old lockfile encoding wrt newlines (rust-lang/cargo#7262)
- Fix dSYM uplifting when symlink is broken (rust-lang/cargo#7268)
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Add tests for -Zast-json and -Zast-json-noexpand, which need this impl.
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update miri
Cc @oli-obk
Fixes https://github.com/rust-lang/rust/issues/63843
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`async-await/no-args-non-move-async-closure`
`generator/no-arguments-on-generators`
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rustdoc: general cleanup
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Error when generator trait is not found
Closes #63912
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Propagate spans and attributes from proc macro definitions
Thanks to https://github.com/rust-lang/rust/pull/63269 we now have spans and attributes from proc macro definitions available in metadata.
However, that PR didn't actually put them into use! This PR finishes that work.
Attributes `rustc_macro_transparency`, `allow_internal_unstable`, `allow_internal_unsafe`, `local_inner_macros`, `rustc_builtin_macro`, `stable`, `unstable`, `rustc_deprecated`, `deprecated` now have effect when applied to proc macro definition functions.
From those attributes only `deprecated` is both stable and supposed to be used in new code.
(`#![staged_api]` still cannot be used in proc macro crates for unrelated reasons though.)
`Span::def_site` from the proc macro API now returns the correct location of the proc macro definition.
Also, I made a mistake in https://github.com/rust-lang/rust/pull/63269#discussion_r312702919, loaded proc macros didn't actually use the resolver cache.
This PR fixes the caching issue, now proc macros go through the `Resolver::macro_map` cache as well.
(Also, the first commit turns `proc_macro::quote` into a regular built-in macro to reduce the number of places where `SyntaxExtension`s need to be manually created.)
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Fixed floating point issue with asinh function
This should fixes #63271 , in which `asinh(-0.0)` returns `0.0` instead of `-0.0`.
according to @nagisa
>
>
> IEEE-754 (2008), section 9.2.1:
>
> > For the functions expm1, exp2m1, exp10m1, logp1, log2p1, log10p1, sin, tan, sinPi, atanPi, asin, atan, sinh, tanh, asinh, and atanh, f(+0) is +0 and f(−0) is −0 with no exception.
>
> and
>
> > sinh(±∞) and asinh(±∞) are ±∞ with no exception.
After ensuring that the function `asinh` is the only function affected (functions like `sin`, `sinh` are all based on `cmath` library or `llvm` intrinsics), and that `atanh` always gives the correct result. The only function to modify is `asinh`.
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libtest: add --show-output flag to print stdout of successful tests
This pull request adds a new flag `--show-output` for tests to show the output of successful tests. For most formatters this was already supported just not exposed via the CLI (apparently only used by `librustdoc`). I've also added support for this option in the JSON formatter.
This kind of fixes https://github.com/rust-lang/rust/issues/54669 which wants `--format json` to work with `--nocapture`, which is... well, impossible. What this issue really calls for is `--show-output` as implemented here.
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This introduces a WithFormatter abstraction that permits one-time
fmt::Display on an arbitrary closure, created via `display_fn`. This
allows us to prevent allocation while still using functions instead of
structs, which are a bit unwieldy to thread arguments through as they
can't easily call each other (and are generally a bit opaque).
The eventual goal here is likely to move us off of the formatting
infrastructure entirely in favor of something more structured, but this
is a good step to move us in that direction as it makes, for example,
passing a context describing current state to the formatting impl much
easier.
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Previously we stored the entire current path which is a bit expensive
and only ever accessed its length. This stores the length directly.
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The alternate mode merely prints out the passed in text which is largely
useless (as the text can simply be directly printed).
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We have &mut access, so remove the RefCell borrowing
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This allows us to pass it a `&mut DocContext` which will allow removal
of RefCells, etc. in the following commits. It's also somewhat a unique
Clean impl in that it previously ignored `self` (re-retriveing
hir::Crate), which it no longer needs to do.
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Which is no longer dummy and is available from metadata now.
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Fix caching of loaded proc macros
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add link to FileCheck docs
Thanks @gnzlbg for pointing me to those docs.
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Refactor feature gates
After #63824, this goes a few steps further by
- parsing doc comments in the macros to extract descriptions for feature gates, and
- introducing a common `Feature` type to replace the tuples used previously to improve readability.
The descriptions are not yet used, but I felt like this PR is a useful enough refactoring on its own.
r? @Centril
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Removed a confusing FnOnce example
# Description
See #47091 for a discussion.
## Changes
- Removed an example that might suggest readers that square_x is (only) FnOnce.
closes #47091
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VxWorks does not provide a way to set the task name except at creation time
Make set_name do thing as VxWorks does not provide a way to set the task name except at creation time.
r? @alexcrichton
cc @n-salim
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Fully implement or-pattern parsing
Builds upon the initial parsing in https://github.com/rust-lang/rust/pull/61708 to fully implement or-pattern (`p | q`) parsing as specified in [the grammar section of RFC 2535](https://github.com/rust-lang/rfcs/blob/master/text/2535-or-patterns.md#grammar).
Noteworthy:
- We allow or-patterns in `[p | q, ...]`.
- We allow or-patterns in `let` statements and `for` expressions including with leading `|`.
- We improve recovery for `p || q` (+ tests for that in `multiple-pattern-typo.rs`).
- We improve recovery for `| p | q` in inner patterns (tests in `or-patterns-syntactic-fail.rs`).
- We rigorously test or-pattern parsing (in `or-patterns-syntactic-{pass,fail}.rs`).
- We harden the feature gating tests.
- We do **_not_** change `ast.rs`. That is, `ExprKind::Let.0` and `Arm.pats` still accept `Vec<P<Pat>>`.
I was starting work on that but it would be cleaner to do this in a separate PR so this one has a narrower scope.
cc @dlrobertson
cc the tracking issue https://github.com/rust-lang/rust/issues/54883.
r? @estebank
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Do not complain about unused code when used in `impl` `Self` type
Fix https://github.com/rust-lang/rust/issues/18290.
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Previously in was implemented using a special hack in the metadata loader
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Point at method call on missing annotation error
Make it clearer where the type name that couldn't be inferred comes from.
Before:
```
error[E0282]: type annotations needed
--> src/test/ui/span/type-annotations-needed-expr.rs:2:13
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2 | let _ = (vec![1,2,3]).into_iter().sum() as f64; //~ ERROR E0282
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for `S`
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= note: type must be known at this point
```
after
```
error[E0282]: type annotations needed
--> src/test/ui/span/type-annotations-needed-expr.rs:2:39
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2 | let _ = (vec![1,2,3]).into_iter().sum() as f64; //~ ERROR E0282
| ^^^ cannot infer type for `S`
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= note: type must be known at this point
```
CC #63852.
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pprust: Do not print spaces before some tokens
Fixes https://github.com/rust-lang/rust/issues/63896
r? @Mark-Simulacrum
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Move promoted MIR out of `mir::Body`
r? @oli-obk
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Improve the documentation for std::hint::black_box.
The other day a colleague was reviewing some of my code which was using `black_box` to block constant propogation. There was a little confusion because the documentation kind of implies that `black_box` is only useful for dead code elimination, and only in benchmarking scenarios.
The docs currently say:
> A function that is opaque to the optimizer, to allow benchmarks to pretend to use outputs to assist in avoiding dead-code elimination.
Here is our discussion, in which I show (using godbolt) that a black box can also block constant propagation:
https://github.com/softdevteam/yk/pull/21#discussion_r302985038
This change makes the docstring for `black_box` a little more general, and while we are here, I've added an example (the same one from our discussion).
OK to go in?
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Permit unwinding through FFI by default
This repeats #62505 for master (Rust 1.38+), as #58794 is not yet resolved. This is a stopgap until a stable alternative is available, like [RFC 2699](https://github.com/rust-lang/rfcs/pull/2699), as long as progress is being made to that end.
r? @joshtriplett
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Make it clearer where the type name that couldn't be infered comes from.
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Support `impl Trait` in inlined documentation
`impl Trait` in argument position was not properly rendered when inlined from other crates. ([a live example on docs.rs](https://docs.rs/libp2p/0.8.1/libp2p/floodsub/struct.Floodsub.html#method.unsubscribe))
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