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.
bors [Fri, 31 Aug 2018 03:35:33 +0000 (03:35 +0000)]
Auto merge of #53832 - pietroalbini:rollup, r=pietroalbini
Rollup of 20 pull requests
Successful merges:
- #51760 (Add another PartialEq example)
- #53113 (Add example for Cow)
- #53129 (remove `let x = baz` which was obscuring the real error)
- #53389 (document effect of join on memory ordering)
- #53472 (Use FxHash{Map,Set} instead of the default Hash{Map,Set} everywhere in rustc.)
- #53476 (Add partialeq implementation for TryFromIntError type)
- #53513 (Force-inline `shallow_resolve` at its hottest call site.)
- #53655 (set applicability)
- #53702 (Fix stabilisation version for macro_vis_matcher.)
- #53727 (Do not suggest dereferencing in macro)
- #53732 (save-analysis: Differentiate foreign functions and statics.)
- #53740 (add llvm-readobj to llvm-tools-preview)
- #53743 (fix a typo: taget_env -> target_env)
- #53747 (Rustdoc fixes)
- #53753 (expand keep-stage --help text)
- #53756 (Fix typo in comment)
- #53768 (move file-extension based .gitignore down to src/)
- #53785 (Fix a comment in src/libcore/slice/mod.rs)
- #53786 (Replace usages of 'bad_style' with 'nonstandard_style'.)
- #53806 (Fix UI issues on Implementations on Foreign types)
bors [Fri, 31 Aug 2018 01:18:42 +0000 (01:18 +0000)]
Auto merge of #53779 - RalfJung:miri-refactor, r=oli-obk
Miri refactor: Final round
Tying up some loose ends that I noticed in the previous PRs -- and finally getting argument passing into a shape where @eddyb says it is "okay", which is a big improvement over the previous verdict that I cannot quote in public. ;)
Also move a bunch of useful helpers to construct `Scalar` from miri to here.
bors [Thu, 30 Aug 2018 22:54:34 +0000 (22:54 +0000)]
Auto merge of #53828 - alexcrichton:dist-llvm-shared, r=japaric
rustbuild: Distribute libLLVM.so with rustc
A recent change (#53245) started to build LLVM with ThinLTO enabled and to
ensure that compile times are kept down it builds LLVM dynamically by default to
ensure that all the various LLVM tools aren't redoing all that optimization
work. This means, however, that all LLVM tools depend on LLVM's dynamic library
by default.
While the LLVM tools and LLDB components were updated to include the shared
library we accidentally forgot about LLD, included with the main rustc
component. LLD also links dynamically to LLVM and ships a non-working binary
right now because of this!
This commit updates our distribution to ship the LLVM dynamic library with the
compiler libraries. While not technically needed for rustc itself to operate
(right now) it may be needed for LLD, and otherwise it serves as a good basis
for the other LLVM tools components to work with as well.
Pietro Albini [Thu, 30 Aug 2018 18:15:44 +0000 (20:15 +0200)]
Rollup merge of #53768 - RalfJung:gitignore, r=nikomatsakis
move file-extension based .gitignore down to src/
Currently, it for example ignores `*.rlib` files in the repository root -- which I think is wrong; I sometimes get these files when I call rustc directly and I do want them cleaned up, not ignored. No such files are created during the normal build process.
Pietro Albini [Thu, 30 Aug 2018 18:15:39 +0000 (20:15 +0200)]
Rollup merge of #53743 - oconnor663:target_env, r=kennytm
fix a typo: taget_env -> target_env
This typo was introduced in https://github.com/rust-lang/rust/pull/47334. A couple tests bitrotted as a result, so we fix those too, and move them to a more sensible place.
Is there some lint we could turn on that would've caught this? It's a drag that cfg typos can silently pass through the compiler.
Pietro Albini [Thu, 30 Aug 2018 18:15:38 +0000 (20:15 +0200)]
Rollup merge of #53740 - japaric:readobj, r=alexcrichton
add llvm-readobj to llvm-tools-preview
Similar to readelf but supports more object formats (it seems). Particularly useful to inspect in detail sections (e.g. their flags) and symbols (e.g. their types).
Users ask this question in [ruRust](https://gitter.im/ruRust/general) chat time to time and it is not obvious to add `ToOwned<Owned=Target>` to requirements of generic params.
bors [Thu, 30 Aug 2018 17:29:13 +0000 (17:29 +0000)]
Auto merge of #53803 - pietroalbini:fix-manifest-2, r=alexcrichton
Fix manifests for broken tools: take 2
This is a follow up of #53715, to avoid stripping unavailable components from the extensions list. This time I also figured out how to test the changes, so the produced manifest is correct.
Along with the fix I added a README with instructions on how to test the tool, and a new `BUILD_MANIFEST_DISABLE_SIGNING` env var to avoid dealing with gpg while testing the tool. I chose an env var instead of a flag because it's more difficult to have it slip in by accident on CI, and there is also another protection that panics if that env var is set on CI, just to be sure we don't release unsigned artifacts.
r? @alexcrichton
cc https://github.com/rust-lang-nursery/rustup.rs/issues/1486
Alex Crichton [Thu, 30 Aug 2018 16:43:15 +0000 (09:43 -0700)]
rustbuild: Distribute libLLVM.so with rustc
A recent change (#53245) started to build LLVM with ThinLTO enabled and to
ensure that compile times are kept down it builds LLVM dynamically by default to
ensure that all the various LLVM tools aren't redoing all that optimization
work. This means, however, that all LLVM tools depend on LLVM's dynamic library
by default.
While the LLVM tools and LLDB components were updated to include the shared
library we accidentally forgot about LLD, included with the main rustc
component. LLD also links dynamically to LLVM and ships a non-working binary
right now because of this!
This commit updates our distribution to ship the LLVM dynamic library with the
compiler libraries. While not technically needed for rustc itself to operate
(right now) it may be needed for LLD, and otherwise it serves as a good basis
for the other LLVM tools components to work with as well.
bors [Thu, 30 Aug 2018 03:30:23 +0000 (03:30 +0000)]
Auto merge of #53685 - alexcrichton:more-keywords, r=varkor
Generalize `async_idents` to all new keywords
This commit generalizes the existing `async_idents` lint to easily encompass
other identifiers that will be keywords in future editions. The new lint is
called `keyword_idents` and the old `async_idents` lint is registered as renamed
to this new lint.
As a proof of concept the `try` keyword was added to this list as it looks to be
listed as a keyword in the 2018 edition only. The `await` keyword was not added
as it's not listed as a keyword yet.
bors [Wed, 29 Aug 2018 20:08:16 +0000 (20:08 +0000)]
Auto merge of #53564 - MaloJaffre:vecdeque, r=gnzlbg
Reoptimize VecDeque::append
~Unfortunately, I don't know if these changes fix the unsoundness mentioned in #53529, so it is stil a WIP.
This is also completely untested.
The VecDeque code contains other unsound code: one example : [reading unitialized memory](https://play.rust-lang.org/?gist=6ff47551769af61fd8adc45c44010887&version=nightly&mode=release&edition=2015) (detected by MIRI), so I think this code will need a bigger refactor to make it clearer and safer.~
Note: this is based on #53571.
r? @SimonSapin Cc: #53529 #52553 @YorickPeterse @jonas-schievink @Pazzaz @shepmaster.
Alex Crichton [Fri, 24 Aug 2018 20:48:20 +0000 (13:48 -0700)]
Generalize `async_idents` to all new keywords
This commit generalizes the existing `async_idents` lint to easily encompass
other identifiers that will be keywords in future editions. The new lint is
called `keyword_idents` and the old `async_idents` lint is registered as renamed
to this new lint.
As a proof of concept the `try` keyword was added to this list as it looks to be
listed as a keyword in the 2018 edition only. The `await` keyword was not added
as it's not listed as a keyword yet.
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