Auto merge of #53075 - Mark-Simulacrum:update-cargolock, r=alexcrichton
Update Cargo.lock
This also includes major version bumps for the rand crate used by core, std, and alloc tests, among other crates (regex, etc.) used elsewhere. Since these are all internal there should be no user-visible changes.
Auto merge of #53027 - matklad:once_is_completed, r=alexcrichton
Allow to check if sync::Once is already initialized
Hi!
I propose to expose a way to check if a `Once` instance is initialized.
I need it in `once_cell`. `OnceCell` is effetively a pair of `(Once, UnsafeCell<Option<T>>)`, which can set the `T` only once. Because I can't check if `Once` is initialized, I am forced to add an indirection and check the value of ptr instead:
The `parking_lot`'s version of `Once` exposes the state as an enum: https://docs.rs/parking_lot/0.6.3/parking_lot/struct.Once.html#method.state.
I suggest, for now, just to add a simple `bool` function: this fits my use-case perfectly, exposes less implementation details, and is forward-compatible with more fine-grained state checking.
Auto merge of #53870 - Xanewok:update-rls, r=oli-obk
Update RLS and Rustfmt
RLS
* Allow project model to download crates ([#1020](https://github.com/rust-lang-nursery/rls/pull/1020))
* Support simple external builds ([#988](https://github.com/rust-lang-nursery/rls/pull/988))
* Support using external Rustfmt ([#990](https://github.com/rust-lang-nursery/rls/pull/990))
Rustfmt (0.99.4)
* Format chains with comment ([#2899](https://github.com/rust-lang-nursery/rls/pull/2899))
* Do not show wildcard pattern in slice pattern ([#2912](https://github.com/rust-lang-nursery/rls/pull/2912))
* Impl only use ([#2951](https://github.com/rust-lang-nursery/rls/pull/2951))
* ... and [more](https://github.com/rust-lang-nursery/rustfmt/compare/5c9a2b6c13d3b6f8d3f9c02b130bb4b54fd489fb...1c408818c8a752dd584e7858b4afd3ceb011a7da)
Bumped in tandem to pull a single version of `rustc-ap-*` libs.
Auto merge of #53927 - ljedrz:save_analysis_cleanups, r=oli-obk
A few cleanups and minor improvements to save_analysis
- calculate the capacity of some `Vec`s
- change`to_owned()` to `clone()` for the purposes of `lower_attributes`
- remove a superfluous `clone()`
- prefer `to_owned()` to `to_string()`
- a few other minor improvements
Auto merge of #53673 - michaelwoerister:incr-thinlto-2000, r=alexcrichton
Enable ThinLTO with incremental compilation.
This is an updated version of #52309. This PR allows `rustc` to use (local) ThinLTO and incremental compilation at the same time. In theory this should allow for getting compile-time improvements for small changes while keeping the runtime performance of the generated code roughly the same as when compiling non-incrementally.
The difference to #52309 is that this version also caches the pre-LTO version of LLVM bitcode. This allows for another layer of caching:
1. if the module itself has changed, we have to re-codegen and re-optimize.
2. if the module itself has not changed, but a module it imported from during ThinLTO has, we don't need to re-codegen and don't need to re-run the first optimization phase. Only the second (i.e. ThinLTO-) optimization phase is re-run.
3. if neither the module itself nor any of its imports have changed then we can re-use the final, post-ThinLTO version of the module. (We might have to load its pre-ThinLTO version though so it's available for other modules to import from)
Auto merge of #53842 - estebank:various, r=petrochenkov
Various small diagnostic and code clean up
- Point at def span on incorrect `panic` or `oom` function
- Use structured suggestion instead of note for `+=` that can be performed on a dereference of the left binding
- Small code formatting cleanup
Auto merge of #53533 - withoutboats:error-source, r=withoutboats
Add Error::source method per RFC 2504.
This implements part of RFC 2504.
* Adds `Error::source`, a replacement for `Error::cause` with the "right" signature, which will be instantly stable.
* Deprecates `Error::cause` in 1.33 (this choice was based on the precedent in #52994, which we haven't finalized).
* Redefines `Error::cause` to delegate to `Error::source` (the delegation can only go in this direction, not the other).
Rollup merge of #53076 - QuietMisdreavus:cfg-rustdoc, r=GuillaumeGomez
set cfg(rustdoc) when rustdoc is running on a crate
When using `#[doc(cfg)]` to document platform-specific items, it's a little cumbersome to get all the platforms' items to appear all at once. For example, the standard library adds `--cfg dox` to rustdoc's command line whenever it builds docs, and the documentation for `#![feature(doc_cfg)]` suggests using a Cargo feature to approximate the same thing. This is a little awkward, because you always need to remember to set `--features dox` whenever you build documentation.
This PR proposes making rustdoc set `#[cfg(rustdoc)]` whenever it runs on a crate, to provide an officially-sanctioned version of this that is set automatically. This way, there's a standardized way to declare that a certain version of an item is specifically when building docs.
To try to prevent the spread of this feature from happening too quickly, this PR also restricts the use of this flag to whenever `#![feature(doc_cfg)]` is active. I'm sure there are other uses for this, but right now i'm tying it to this feature. (If it makes more sense to give this its own feature, i can easily do that.)
Rollup merge of #53782 - rask:task/arc-docs-adjustment, r=cramertj
Make Arc cloning mechanics clearer in module docs
Add some more wording to module documentation regarding how
`Arc::clone()` works, as some users have assumed cloning Arc's
to work via dereferencing to inner value as follows:
use std::sync::Arc;
let myarc = Arc::new(1);
let myarcref = myarc.clone();
assert!(1 == myarcref);
Instead of the actual mechanic of referencing the existing
Arc value:
use std::sync::Arg;
let myarc = Arc::new(1);
let myarcref = myarc.clone();
assert!(myarcref == &myarc); // not sure if assert could assert this in the real world
fixes
````
error: trait objects without an explicit `dyn` are deprecated
--> libcore/../libcore/benches/any.rs:18:36
|
18 | let mut y = &mut x as &mut Any;
| ^^^ help: use `dyn`: `dyn Any`
|
= note: requested on the command line with `-D bare-trait-objects`
````
Rollup merge of #53774 - PhilipDaniels:master, r=tromey
Add rust-gdbgui script.
This script invokes the [gdbgui](https://gdbgui.com/) graphical GDB front-end with the Rust pretty printers loaded. The script does not install gdbgui, that must be done manually.
As an escapee from Visual Studio it is nice to have a point-and-click debugger. This script invokes `gdbgui` similarly to the way that `rust-gdb` invokes `gdb` - I copied that script as a starting point.
Because it is a wrapper around a wrapper you don't have as much flexibility in passing arguments to GDB and I could not find a way to eliminate the single quotes you have to use when you want to pass arguments to your program (`gdbgui` supposedly supports an `--args` option which I think should allow this, but I couldn't get it to work, my shell-fu is weak). Still, I find this very usable for debugging programs, and it is a lot more approachable than gdb in the terminal.
Auto merge of #53604 - oli-obk:min_const_fn, r=Centril,varkor
Implement the `min_const_fn` feature gate
cc @RalfJung @eddyb
r? @Centril
implements the feature gate for #53555
I added a hack so the `const_fn` feature gate also enables the `min_const_fn` feature gate. This ensures that nightly users of `const_fn` don't have to touch their code at all.
The `min_const_fn` checks are run first, and if they succeeded, the `const_fn` checks are run additionally to ensure we didn't miss anything.
Auto merge of #53762 - flip1995:tool_lints, r=Manishearth
Backwards compatibility for tool/clippy lints
cc #44690
cc https://github.com/rust-lang-nursery/rust-clippy/pull/2977#issuecomment-409706557
This is the next step towards `tool_lints`.
This makes Clippy lints still work without scoping, but will warn and suggest the new scoped name. This warning will only appear if the code is checked with Clippy itself.
There is still an issue with using the old lint name in inner attributes. For inner attributes the warning gets emitted twice. I'm currently not really sure why this happens, but will try to fix this ASAP.
Auto merge of #53611 - alexcrichton:update-llvm, r=nikomatsakis
Update LLVM submodule
This commit updates the LLVM submodule to the current trunk of LLVM itself. This
brings a few notable improvements for the wasm target:
* Support for wasm atomic instructions is greatly improved
* Renamed memory wasm intrinsics are fully supported
* LLD has fixed a quadratic execution bug with large numbers of relocations in
wasm files.
The compiler-rt submodule has been updated in tandem as well.
Alex Crichton [Wed, 22 Aug 2018 18:17:36 +0000 (11:17 -0700)]
Update LLVM submodule
This commit updates the LLVM submodule to the current trunk of LLVM itself. This
brings a few notable improvements for the wasm target:
* Support for wasm atomic instructions is greatly improved
* Renamed memory wasm intrinsics are fully supported
* LLD has fixed a quadratic execution bug with large numbers of relocations in
wasm files.
The compiler-rt submodule has been updated in tandem as well.
bors [Fri, 31 Aug 2018 17:39:28 +0000 (17:39 +0000)]
Auto merge of #51384 - QuietMisdreavus:extern-version, r=GuillaumeGomez
rustdoc: add flag to control the html_root_url of dependencies
The `--extern-html-root-url` flag in this PR allows one to override links to crates whose docs are not already available locally in the doc bundle. Docs.rs currently uses a version of this to make sure links to other crates go into that crate's docs.rs page. See the included test for intended use, but the idea is as follows:
Calling rustdoc with `--extern-html-root-url crate=https://some-url.com` will cause rustdoc to override links that point to that crate to instead be replaced with a link rooted at `https://some-url.com/`. (e.g. for docs.rs this would be `https://docs.rs/crate/0.1.0` or the like.) Cheekily, rustup could use these options to redirect links to std/core/etc to instead point to locally-downloaded docs, if it so desired.
bors [Fri, 31 Aug 2018 14:06:14 +0000 (14:06 +0000)]
Auto merge of #53699 - oli-obk:promotion_stability_hole, r=nikomatsakis
Fix promotion stability hole in old borrowck
r? @nikomatsakis
I screwed up the promotion stability checks. Big time. They were basically nonexistant. We had tests for it. I also screwed up said tests. This is in stable already :(
Basically stability checks of promotion only worked if you tried to use a const fn defined in the same crate.
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