NLL: sort diagnostics by span
Sorting the output diagnostics by span is a long planned revision to the NLL diagnostics that we hope will yield a less surprising user experience in some case.
Once we got them buffered, it was trivial to implement. (The hard part is skimming the resulting changes to the diagnostics to make sure nothing broke... Note that I largely rubber-stamped the `#[rustc_regions]` output change.)
Fix#51167
Fix wrong issue number in the test name
I made a mistake in previous PR #52620, second issue number was wrong, changing from #52133 to #52113
r? @kennytm
run-pass/const-endianness: negate before to_le()
`const LE_I128` needs parentheses to negate the value *before* calling
`to_le()`, otherwise it doesn't match the operations performed in the
black-boxed part of the test. This only makes a tangible difference on
big-endian targets.
Add targets for HermitCore (https://hermitcore.org) to the Rust compiler and port libstd to it.
As a start, the port uses the simplest possible configuration (no jemalloc, abort on panic) and makes use of existing Unix-specific code wherever possible.
It adds targets for x86_64 (current main HermitCore platform) and aarch64 (HermitCore platform under development).
Together with the patches to "liblibc" (https://github.com/rust-lang/libc/pull/1048) and llvm (https://github.com/rust-lang/llvm/pull/122), this enables HermitCore applications to be written in Rust.
Use Vec::extend in SmallVec::extend when applicable
As calculated in #52738, `Vec::extend` is much faster than `push`ing to it in a loop. We can take advantage of this method in `SmallVec` too - at least in cases when its underlying object is an `AccumulateVec::Heap`.
~~This approach also accidentally improves the `push` loop of the `AccumulateVec::Array` variant, because it doesn't utilize `SmallVec::push` which performs `self.reserve(1)` with every iteration; this is unnecessary, because we're already reserving the whole space we will be needing by performing `self.reserve(iter.size_hint().0)` at the beginning.~~
Make the tool_lints actually usable
cc #44690
Necessary for rust-lang-nursery/rust-clippy#2955 and rust-lang-nursery/rust-clippy#2977
This PR makes it possible for lint tools (at the moment only for Clippy) to implement the `tool_lints`, like it was documented in #52018.
Because the `declare_lint` macro is pretty cluttered right now, there was not really a good way to add the `tool_name` as an additional argument of the macro. That's why I chose to introduce the new `declare_tool_lint` macro.
The switch from `&str` to `String` in the `lint_groups` `FxHashMap` is because I got weird error messages in the `check_lint_name` method. And the `by_name` field of the `LintStore` also uses `String`.
### What comes with this PR:
If this PR lands and Clippy switches to the `tool_lints`, the currently used methods
```rust
#[cfg_attr(feature = "cargo-clippy", allow(clippy_lint))]
#[allow(unknown_lints, clippy_lint)]
```
to `allow`/`warn`/`deny`/`forbid` Clippy lints, won't have any effects anymore, but also won't produce a warning. That is because the name of `clippy_lint` will then be `clippy::clippy_lint`. (Maybe we can add a clippy lint to search for `cfg_attr` appearances with the `cargo-clippy` feature?)
r? @oli-obk
Add timeout to use of `curl` in bootstrap.py.
Recently we've seen a lot of "30 minutes no output" spurious errors while downloading the bootstrap compiler. This added several timeout options so if the "30 minutes no output" errors were caused by connection or transfer issue, we could fail quicker for curl to retry.
Fix -Wpessimizing-move warnings in rustllvm/PassWrapper
These are producing warnings when building rustc (`warning: moving a local object in a return statement prevents copy elision [-Wpessimizing-move]`).
Fix From<LocalWaker>
This is a follow-up to https://github.com/rust-lang/rust/pull/52640
Fixes `From<LocalWaker>` which is affected by the same accidental drop bug (unless I'm totally mistaken)
r? @cramertj
[NLL] Don't make "fake" match variables mutable
These variables can't be mutated by the user, but since they have names the unused-mut lint thinks that it should check them.
Update clippy to latest master
r? @oli-obk
There is a regression in the version in current nightly that falsely lints `println!` and `writeln!` that use named arguments, thinking all rhs values for the argument expressions are literals even when they are not. This update includes the fix for that.
Document From trait implementations for OsStr, OsString, CString, and CStr
As part of issue #51430 (cc @skade).
The allocation and copy claims should be double-checked.
r? @steveklabnik
Parsing the code block's LangString (```foo) previously checked itself
to see if we were on nightly; that isn't the right place to do so. Move
that check slightly outwards to better abstract LangString.
(This is also an optimization as we avoid the costly environment
variable load of RUSTC_BOOTSTRAP).
Revert "Stabilize to_bytes and from_bytes for integers."
This reverts commit c8f9b84b39 / PR https://github.com/rust-lang/rust/pull/51835, and reopens the tracking issue https://github.com/rust-lang/rust/issues/49792.
These methods were stabilized in Rust 1.29, which is still in Nightly as of this writing. So my understanding is that it is still time to change our minds. Given the ongoing discussion in https://github.com/rust-lang/rust/pull/51919 about possibly renaming these APIs and since 1.29 goes to beta soon, I’d like to revert this stabilization for now until a decision is made in that PR. It’s possible that a decision will be made in time for 1.29, but there is no urgency. At most I expect this functionality to make it into 1.30.
