…waker. Also, fix some

of the stability attributes of LocalWaker's methods.

…r used" error

Fixes rust-lang#122266

- missed syms for usize/isize
- missed diag items on unsigned integers

Add std::ffi::c_str module

ACP: rust-lang/libs-team#134

`std::ffi` docs before change:
![Structs: VaList, VaListImpl, CStr, CString, FromBytesWithNulError, FromVecWithNulError, IntoStringError, NulError, OsStr, OsString](https://github.com/rust-lang/rust/assets/15850505/b2cf3534-30f9-4ef0-a655-bacdc3a19e17)

`std::ffi` docs after change:
![Re-exports: self::c_str::{FromBytesWithNulError, FromBytesUntilNulError, FromVecWithNulError, NulError, IntoStringError} ; Modules: c_str ; Structs: VaList, VaListImpl, CStr, CString, OsStr, OsString](https://github.com/rust-lang/rust/assets/15850505/23aa6964-da7a-4942-bbf7-42bde2146f9e)

(note: I'm omitting the `c_int`, etc. stuff from the screenshots since it's the same in both. this doesn't just delete those types)

Update a test to support Symbol Mangling V0

Note that since this is a symbol from `std`, overriding the symbol mangling version via the `compile-flags` directive does not work.

…est_script, r=Mark-Simulacrum

Fixing shellcheck comments on lvi test script

Running `shellcheck` on `tests/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh` gives plenty of warnings. This PR fixes those issues. For completeness: rust-lang#121683 fixes another warning as well

Expose the Freeze trait again (unstably) and forbid implementing it manually

non-emoji version of rust-lang#121501

cc rust-lang#60715

This trait is useful for generic constants (associated consts of generic traits). See the test (`tests/ui/associated-consts/freeze.rs`) added in this PR for a usage example. The builtin `Freeze` trait is the only way to do it, users cannot work around this issue.

It's also a useful trait for building some very specific abstrations, as shown by the usage by the `zerocopy` crate: google/zerocopy#941

cc `@RalfJung`

T-lang signed off on reexposing this unstably: rust-lang#121501 (comment)

Add a tidy check that checks whether the fluent slugs only appear once

As `````@Nilstrieb````` said in rust-lang#121828 (comment):
> Might make sense to have a tidy check that checks whether the fluent slugs only appear once in the source code and lint for that
there's a tidy check already for sorting

We can get the tidy check error:
```
tidy check
tidy error: /path/to/rust/compiler/rustc_const_eval/messages.ftl: message `const_eval_invalid_align` is not used
tidy error: /path/to/rust/compiler/rustc_lint/messages.ftl: message `lint_trivial_untranslatable_diag` is not used
tidy error: /path/to/rust/compiler/rustc_parse/messages.ftl: message `parse_invalid_literal_suffix` is not used
tidy error: /path/to/rust/compiler/rustc_infer/messages.ftl: message `infer_need_type_info_in_coroutine` is not used
tidy error: /path/to/rust/compiler/rustc_passes/messages.ftl: message `passes_expr_not_allowed_in_context` is not used
tidy error: /path/to/rust/compiler/rustc_passes/messages.ftl: message `passes_layout` is not used
tidy error: /path/to/rust/compiler/rustc_parse/messages.ftl: message `parse_not_supported` is not used
```

r? `````@Nilstrieb`````

…boet

std::rand: enable getrandom for dragonflybsd too.

match lowering: define a convenient struct

Small refactor PR: `bindings` and `ascriptions` always come together so I made a struct for them. I'll have one or two fields to add to it in a later PR as well.

…=Nilstrieb

fix: LocalWaker memory leak and some stability attributes

fixes rust-lang#122180.

…st, r=Nadrieril

Add test to check unused_lifetimes don't duplicate "parameter is never used" error

Closes rust-lang#72587.

add myself to rotation

Won't have too much capacity, but I am able to contribute something. Will be rotating reviews if I run out of capacity :)

r? ````@ghost````
````@bors```` r+ rollup

doc/rustc: Move loongarch64-unknown-linux-musl to Tier 3

Fixes rust-lang#122266

…nstants, r=Nilstrieb

Fix legacy numeric constant diag items

- missed syms for usize/isize
- missed diag items on unsigned integers

For rust-lang/rust-clippy#12312

r? ``@Nilstrieb``

Follow-up to rust-lang#121272, rust-lang#121361, rust-lang#121667
This should be the last one 🤞 Sorry!