The `rust-dev` dist component puts binaries in `bootstrap/bin`, but we expected them to be in
`bootstrap/debug` to match cargo's behavior. Rather than making the dist component inconsistent
with other components, make bootstrap slightly smarter and allow using any path as long as all the
binaries are in the same directory.
As a bonus, this greatly simplifies the logic, and makes it possible for the shell scripts to start
avoiding python.
Co-authored-by: Joshua Nelson <github@jyn.dev>
- Default to trying git rev-parse for the root directory
CARGO_MANIFEST_DIR is a path on the build machine, not the running machine.
Don't require this to succeed, to allow building from a tarball; in that case fall back to CARGO_MANIFEST_DIR.
- Set `initial_rustc` to a path based on the path of the running executable, not CARGO_MANIFEST_DIR.
We only reset `initial_rustc` if we're sure this isn't the working tree bootstrap was originally built in,
since I'm paranoid that setting this in other cases will cause things to break;
it's not clear to me when $RUSTC differs from `build/$TARGET/stage0/bin/rustc` (maybe never? but better to be sure).
Instead, only set this when
a) We are not using a custom rustc. If someone has specified a custom rustc we should respect their wishes.
b) We are in a checkout of rust-lang/rust other than the one bootstrap was built in.
- Add a new `bootstrap` component
Originally, we planned to combine this with the `rust-dev` component.
However, I realized that would force LLVM to be redownloaded whenever bootstrap is modified.
LLVM is a much larger download, so split this to get better caching.
- Build bootstrap for all tier 1 and 2 targets
Allow generators to impl Clone/Copy
Revives #95137. It's a pity that the original pr didn't land because the implementation is almost complete! All credits goes to `@canndrew,` and i just resolved the merge conflicts and updated the feature gate version number.
r? `@oli-obk`
Optimize thread parking on NetBSD
As the futex syscall is not present in the latest stable release, NetBSD cannot use the efficient thread parker and locks Linux uses. Currently, it therefore relies on a pthread-based parker, consisting of a mutex and semaphore which protect a state variable. NetBSD however has more efficient syscalls available: [`_lwp_park`](https://man.netbsd.org/_lwp_park.2) and [`_lwp_unpark`](https://man.netbsd.org/_lwp_unpark.2). These already provide the exact semantics of `thread::park` and `Thread::unpark`, but work with thread ids. In `std`, this ID is here stored in an atomic state variable, which is also used to optimize cases were the parking token is already available at the time `thread::park` is called.
r? `@m-ou-se`
Simplify codeblock and their associated tooltip
It is based on https://github.com/rust-lang/rust/pull/101600 so it needs to wait for this one to be merged first.
This PR does two things:
* Remove CSS class duplication by setting CSS classes such as `compile_fail` directly on the `div` wrapping both the codeblock and the tooltip.
* Simplify DOM: no need to wrap the tooltip into a `<div>`, it can work just as well without it.
You can test it [here](https://rustdoc.crud.net/imperio/codeblock-tooltip/std/string/struct.String.html#deref).
r? `@notriddle`
Equate fn outputs when inferring RPITIT hidden types
When we are trying to infer the hidden types for RPITITs, we need to equate the output tys instead of just subtyping them. For example:
```rust
trait Foo { fn bar() -> impl Sized {} }
impl Foo for () { fn bar() -> &'static str { "" } }
```
If we just subtype the signatures `fn() -> &'static str <: fn() -> _#1t` (where `_#1t` is the variable we've used to infer `impl Sized`), we'll end up `&'static str <: _#1t`, which causes us to infer `_#1t = #'_#2r str`, where `'_#2r` is unconstrained, which gets fixed up to `ReEmpty`, and which is certainly not what we want.
I can't actually think of a way to make this fail to compile, because during borrowck we've already done the method probe, and so we just look at the `impl` method signature and see the `&'static str` any time we call `<() as Foo>::bar()`. But this _does_ cause the ICE [here](https://github.com/rust-lang/rust/pull/98559#issuecomment-1241891994) in `@jackh726's` "Remove ReEmpty" PR (#98559) to stop ICEing, because after that PR we were leaking unconstrained region variables into the typeck results.
r? types
The `<*const T>::guaranteed_*` methods now return an option for the unknown case
cc https://github.com/rust-lang/rust/issues/53020#issuecomment-1236932443
I chose `0` for "not equal" and `1` for "equal" and left `2` for the unknown case so backends can just forward to raw pointer equality and it works ✨
r? `@fee1-dead` or `@lcnr`
cc `@rust-lang/wg-const-eval`
Rustdoc-Json: Correcty handle intra-doc-links to items without HTML page
Closes#101531
I renamed the `did` field in `ItemLink ` to more accurately describe what it does.
r? `@jyn514`
rustdoc: remove unused CSS `#search { position: relative }`
This was added in 611d0e6ccef8b60fa86ff5aa8fe3571cd36c444a, to allow its child `#results` element to be absolutely positioned inside it. The child stopped being absolute in 8c0469552e879f6319f8f96db660bab9eae1de5c.
To keep the layout looking the same, the links need to not have `width: 100%` any more, relying instead on the box naturally growing to fit because it has `display: block`.
