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`run-coverage`
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When multiple test modes share the same test directory, this will allow them to
avoid interfering with each others' files and timestamps.
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These multi-file tests were not copied over in #114843 because they weren't
working, but it turns out that they just need the correct crate-type.
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There is another test named `if.rs` in `tests/coverage-map/status-quo/`, so
this test stands in the way of flattening that directory into its parent.
Fortunately both tests are more-or-less equivalent, so removing this one is
fine.
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This is a step towards being able to unify the two coverage test directories.
There are two tests that require adjustment:
- `overflow.rs` requires an explicit `-Coverflow-checks=yes`
- `sort_groups.rs` is sensitive to provably unused instantiations
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Rollup of 4 pull requests
Successful merges:
- #117190 (add test for #113381)
- #117516 (add test for #113375)
- #117631 (Documentation cleanup for core::error::Request.)
- #117637 (Check binders with bound vars for global bounds that don't hold)
r? `@ghost`
`@rustbot` modify labels: rollup
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Check binders with bound vars for global bounds that don't hold
This fixes `soa_derive-0.13.0` from #117589's crater run.
r? `@compiler-errors`
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Documentation cleanup for core::error::Request.
This part of the documentation currently render like this:
The new version renders like this:
Fixes:
* Add missing closing back tick.
* Remove spurious double back ticks.
* Add missing newline to render bullet point correctly.
* Fix grammar "there are methods calledrequest_ref and request_value are available" -> "there are methods calledrequest_ref and request_value".
* Change "methods" to "functions", which seems more appropriate for free functions.
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add test for #113375
Fixes #113375
r? `@fee1-dead`
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add test for #113381
Fixes #113381
r? fee1-dead
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Detect misparsed binop caused by missing semi
When encountering
```rust
foo()
*bar = baz;
```
We currently emit potentially two errors, one for the return type of
`foo` not being multiplicative by the type of `bar`, and another for
`foo() * bar` not being assignable.
We now check for this case and suggest adding a semicolon in the right
place and emit only a single error.
Fix #80446.
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Make the randomize feature of rustc_abi additive
The goal here is to make rust-analyzer able to build with the `rustc_private` versions of the rustc crates it depends on. See #116847
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(instead of just late bound vars)
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document that the null pointer has the 0 address
Fixes https://github.com/rust-lang/rust/issues/116895
Will need t-lang FCP, but I think this is fairly uncontroversial -- there's probably already tons of code out there that relies on this.
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Rollup of 3 pull requests
Successful merges:
- #117592 (Use the correct span when emitting the `env!` result)
- #117613 (Remove from vacation and compiler review group)
- #117615 (Couple of small changes)
r? `@ghost`
`@rustbot` modify labels: rollup
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Couple of small changes
These are unrelated to each other, but they are each small enough that opening separate PR's doesn't make sense to me either.
* Remove a place where the parse driver query is stolen.
* Update an outdated doc comment
* Use correct crate name in `-Zprint-vtable-sizes` when using `#![crate_name = "..."]`.
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Remove from vacation and compiler review group
Staying on the types review rotation, but staying off the general review queue is good for me right now.
Also move ``@compiler-errors`` since he's a full member now.
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Use the correct span when emitting the `env!` result
The span used for the `env!` resut changed in 1.73, due to https://github.com/rust-lang/rust/commit/75df62d4a2c45175b8cb1eb4bdc10fa423c11c4c (from https://github.com/rust-lang/rust/pull/114014).
This prevents [a lint in `plrustc`](https://github.com/tcdi/plrust/blob/main/plrustc/plrustc/src/lints/builtin_macros.rs#L54-L60)[^1] from working well, because the resulting span is not inside the region where the lint is `#[deny()]`ed.
[^1]: Perhaps worth noting that the `env_macro` diagnostic item comes from [the std fork used with PL/Rust](https://github.com/tcdi/postgrestd/blob/rust-1.73.0/library/core/src/macros/mod.rs#L944).
Unfortunately, I have no idea how to write a test for this since I don't think we can have a custom lint in a test. A suggestion was made to use a custom proc macro for it, but that seems pretty involved (frankly, I might not have time to do it).
r? ``@davidtwco`` (since they're the author of the PR with the regression)
P.S. We generally try to avoid bothering upstream about PL/Rust-specific stuff (we don't want to nag), but this seems like an actual bug, since the other similar macros, such as `option_env` use the other span (and are lintable as a result).
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r=davidtwco
Derive `TyEncodable`/`TyDecodable` in `rustc_type_ir`
when `derive(TyEncodable)` or `derive(TyDecodable)` sees an `I` type parameter on a struct that has no `'tcx`, then parameterize the `TyEncoder`/`TyDecoder`'s interner over that variable rather than `TyCtxt<'tcx>`.
Also, emit where clauses for fields rather than generics.
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enable parallel rustc front end in nightly builds
Refers to the [MCP](https://github.com/rust-lang/compiler-team/issues/681), this pr does:
1. Enable the parallel front end in nightly builds, and keep the default number of threads as 1. Then users can use the parallel rustc front end via -Z threads=n option.
2. Set it up to serial front end for beta/stable builds via bootstrap.
3. Switch over the alt builders from parallel rustc to serial, so we have artifacts without parallel to test against the artifacts with parallel.
r? `@oli-obk`
cc `@cjgillot` `@nnethercote` `@bjorn3` `@Kobzol`
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bump clang version for dist-x86_64-linux from 17.0.2 to 17.0.4
This fixes few miscompiles, so nice to have.
Release notes:
https://discourse.llvm.org/t/llvm-17-0-3-released/74172
https://discourse.llvm.org/t/llvm-17-0-4-released/74548
>The next release will be 17.0.5, in two weeks 14th of November.
Or maybe delay until 17.0.5?
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Add the `Span` of the `move` keyword to the HIR.
This is required to implement a lint like the one described here: https://github.com/rust-lang/rust-clippy/issues/11721
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Fix excessive initialization and reads beyond EOF in `io::copy(_, Vec<u8>)` specialization
fixes #117545 and https://github.com/bczhc/bzip3-rs/pull/8
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Override `Waker::clone_from` to avoid cloning `Waker`s unnecessarily
This would be very useful for futures — I think it’s pretty much always what they want to do instead of `*waker = cx.waker().clone()`.
Tracking issue: https://github.com/rust-lang/rust/issues/98287
r? rust-lang/libs-api `@rustbot` label +T-libs-api -T-libs
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generate beta manifests as pre-requisit to rust-lang/rustup#1329
<https://github.com/rust-lang/rustup/issues/1329#issuecomment-1134946736> mentioned (a while ago) this would be the next step
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r=Mark-Simulacrum
Avoid unnecessary comparison in partition_equal
The branchy Hoare partition `partition_equal` as part of `slice::sort_unstable` has a bug that makes it perform a comparison of the last element twice.
Measuring inputs with a Zipfian distribution with characterizing exponent s == 1.0, yields a ~0.05% reduction in the total number of comparisons performed.
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This is the only place aside from the global_ctxt query where it is
stolen.
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improve compiler&tool documenting and re-enable cranelift on CI
First commit addresses the linking issue with compiler crates. Second one ensures that compiler crates are linked correctly (with later commits we added this check for tools as well), allowing us to detect these hard-to-catch bugs on CI. Following three commits cherry-picked from #117328 to re-enable the Cranelift backend on CI.
More info: https://github.com/rust-lang/rust/issues/117430
cc `@bjorn3` `@RalfJung`
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Signed-off-by: onur-ozkan <work@onurozkan.dev>
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Feature gate enums in offset_of
As requested at https://github.com/rust-lang/rust/issues/106655#issuecomment-1790815262, put enums in offset_of behind their own feature gate.
`@rustbot` label F-offset_of
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Rollup of 4 pull requests
Successful merges:
- #116017 (Don't pass `-stdlib=libc++` when building C files on macOS)
- #117524 (bootstrap/setup: create hooks directory if non-existing)
- #117588 (Remove unused LoadResult::DecodeIncrCache variant)
- #117596 (Add diagnostic items for a few of core's builtin macros)
r? `@ghost`
`@rustbot` modify labels: rollup
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Add diagnostic items for a few of core's builtin macros
Specifically, `env`, `option_env`, and `include`. There are a number of reasons why people might want to look at these in lints (For example, to ensure that things behave consistently, detect things that might make builds less reproducible, etc).
Concretely, in PL/Rust (well, `plrustc`) we have lints that forbid these (which I'd like to [add to clippy as restriction lints](https://rust-lang.zulipchat.com/#narrow/stream/257328-clippy/topic/Landing.20a.20flotilla.20of.20lints.3F) eventually), and `dylint` also has [lints that look for `env!`/`option_env!`](https://github.com/trailofbits/dylint/blob/109a07e9f27a9651ef33b6677ccaddd21466e97a/examples/general/env_cargo_path/src/lib.rs) (although perhaps not `include`), which would benefit from this.
My experience is that it's pretty annoying to (robustly) check uses of builtin macros without these IME, although that's perhaps just my own fault (e.g. I could be doing it wrong).
At `@Nilstrieb's` suggestion, I've added a comment that explains why these are here, even though they are not used in the compiler. This is mostly to discourage removal, although it's not a big deal if it happens (I'm certainly not suggesting the presence of these be in any way stable).
---
In theory this is a library PR (in that it's in library/core), but I'm going to roll compiler because the existence of this or not is much more likely something they care about rather than libs. Hopefully nobody objects to this.
r? compiler
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Remove unused LoadResult::DecodeIncrCache variant
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r=Mark-Simulacrum
bootstrap/setup: create hooks directory if non-existing
When running `./x setup` on a local repository I chose to install a `pre-push` git hook, but this happened:
```shell
Would you like to install the git hook?: [y/N] y
error: could not create hook .git/hooks/pre-push: do you already have the git hook installed?
No such file or directory (os error 2)
thread 'main' panicked at src/core/build_steps/setup.rs:462:9:
install_git_hook_maybe(&config) failed with No such file or directory (os error 2)
```
This was caused because the `.git/hooks` directory did not exist in my local repository. Creating it manually and re-running the command works fine.
This PR tests for the above directory and if it does not exist then it _tries_ to create it before hard linking the pre-push hook - we use `fs::create_dir()` and disregard the result (ie. it could fail if the directory was created in the meantime) and proceed to call `fs::hard_link()` all the same.
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Don't pass `-stdlib=libc++` when building C files on macOS
When using *Command Line Tools for Xcode* version 15.0, clang will warn about `argument unused during compilation: '-stdlib=libc++'` if this flag is present when compiling C files only (i.e. no C++ files).
To avoid this warning, we can add the flag only to CXXFLAGS and not to CFLAGS.
---
[Zulip thread](https://rust-lang.zulipchat.com/#narrow/stream/326414-t-infra.2Fbootstrap/topic/clang.20warning.3A.20argument.20unused.20during.20compilation.20.28libc.2B.2B.29)
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This fixes few miscompiles, so nice to have.
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Remove obsolete support for linking unwinder on Android
Linking libgcc is no longer supported (see #103673), so remove the related link attributes and the check in unwind's build.rs. The check was the last remaining significant piece of logic in build.rs, so remove build.rs as well.
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Add FileCheck annotations to a few MIR opt tests
const_debuginfo did not specify which passes were running.
const_prop_miscompile is renamed and moved to const_prop directory.
while_storage was broken.
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Stabilize `const_maybe_uninit_zeroed` and `const_mem_zeroed`
Make `MaybeUninit::zeroed` and `mem::zeroed` const stable. Newly stable API:
```rust
// core::mem
pub const unsafe fn zeroed<T>() ->;
impl<T> MaybeUninit<T> {
pub const fn zeroed() -> MaybeUninit<T>;
}
```
This relies on features based around `const_mut_refs`. Per `@RalfJung,` this should be OK since we do not leak any `&mut` to the user.
For this to be possible, intrinsics `assert_zero_valid` and `assert_mem_uninitialized_valid` were made const stable.
Tracking issue: #91850
Zulip discussion: https://rust-lang.zulipchat.com/#narrow/stream/146212-t-compiler.2Fconst-eval/topic/.60const_mut_refs.60.20dependents
r? libs-api
`@rustbot` label -T-libs +T-libs-api +A-const-eval
cc `@RalfJung` `@oli-obk` `@rust-lang/wg-const-eval`
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