aaa

* Allow crt-static for dylibs
* Pass -lgcc to the linker

Co-Authored-By: Jeremy Soller <[email protected]>

Added the following (all unstable):

* Defaulted type pararameter `A: Allocator`.
* `UniqueRc::new_in()`.
* `T:  ?Sized` where possible.
* `impl CoerceUnsized for UniqueRc`.
* Drive-by doc polish: links and periods at the end of sentences.

These changes are motivated by supporting the implementation of unsized
`Rc::make_mut()` (PR rust-lang#116113), but are also intended to be obvious
generalizations of `UniqueRc` to support the things `Rc` does.

CentOS 7 is going EOL on June 30, after which its package repos will no
longer exist on the regular mirrors. We'll still be able to access
packages from the vault server though, and can start doing so now. This
affects `dist-i686-linux` and `dist-x86_64-linux`.

I also removed `epel-release` because we were only using that for its
`cmake3`, but we've been building our own version for a while.

We don't build LLVM when using the precompiled version from the CI builder.

Signed-off-by: onur-ozkan <[email protected]>

…fetime, r=estebank,davidtwco

Place tail expression behind terminating scope

This PR implements rust-lang#123739 so that we can do further experiments in nightly.

A little rewrite has been applied to `for await` lowering. It was previously `unsafe { Pin::unchecked_new(into_async_iter(..)) }`. Under the edition 2024 rule, however, `into_async_iter` gets dropped at the end of the `unsafe` block. This presumably the first Edition 2024 migration rule goes by hoisting `into_async_iter(..)` into `match` one level above, so it now looks like the following.
```rust
match into_async_iter($iter_expr) {
  ref mut iter => match unsafe { Pin::unchecked_new(iter) } {
    ...
  }
}
```

…ge, r=estebank

Indicate in `non_local_defs` lint that the macro needs to change

This PR adds a note to indicate that the macro needs to change in the `non_local_definitions` lint output.

Address rust-lang#125089 (comment)
Fixes rust-lang#125681
r? ``@estebank``

Various Redox OS fixes and add i686 Redox OS target

All of these come from the fork used by Redox OS available at https://gitlab.redox-os.org/redox-os/rust/-/commits/redox-2024-05-11/?ref_type=heads.

cc `@jackpot51`

`UniqueRc`: support allocators and `T: ?Sized`.

Added the following (all unstable):

* Defaulted type pararameter `A: Allocator`.
* `UniqueRc::new_in()`.
* `T:  ?Sized` where possible.
* `impl CoerceUnsized for UniqueRc`.

These changes are motivated by supporting the implementation of unsized `Rc::make_mut()` (PR rust-lang#116113), but are also intended to be obvious generalizations of `UniqueRc` to support the things `Rc` does.

r? ````@the8472````

ci: Update centos:7 to use vault repos

CentOS 7 is going EOL on June 30, after which its package repos will no
longer exist on the regular mirrors. We'll still be able to access
packages from the vault server though, and can start doing so now. This
affects `dist-i686-linux` and `dist-x86_64-linux`.

I also removed `epel-release` because we were only using that for its
`cmake3`, but we've been building our own version for a while.

try-job: dist-i686-linux
try-job: dist-x86_64-linux

extend the check for LLVM build

We don't build LLVM when using the precompiled version from the CI builder.

Closes rust-lang#126156