std::sync::mpsc uses thread locals and depending on the order TLS dtors
are run `rx.recv()` can panic when used in a TLS dtor.

Searching for `chdir` in the Rust documentation produces no useful
results.

Moved -z ignore to add_as_needed

Trying to cross-compile for sparcv9-sun-solaris
getting an error message for -zignore

Introduced when -z -ignore was separated here
22d0ab0

No formatting done

Reproduce

``` bash
rustup target add sparcv9-sun-solaris
cargo new --bin hello && cd hello && cargo run --target=sparcv9-sun-solaris
```

config.toml

[target.sparcv9-sun-solaris]
linker = "gcc"

Fixes: rust-lang#84018

With `-Z instrument-coverage`, coverage reporting of dead blocks
(for example, blocks dropped because a conditional branch is dropped,
based on const evaluation) is now supported.

If `instrument-coverage` is enabled, `simplify::remove_dead_blocks()`
finds all dropped coverage `Statement`s and adds their `code_region`s as
`Unreachable` coverage `Statement`s to the `START_BLOCK`, so they are
still included in the coverage map.

Check out the resulting changes in the test coverage reports in this PR.

Fixes: rust-lang#83830

Fix rust-lang#84769, follow up to rust-lang#84499, rust-lang#83667.

Clippy: Decreases indentation and improves readability

Signed-off-by: wcampbell <wcampbell1995@gmail.com>

MinGW driver for COFF LLD doesn't currently translate GNU-style `--threads=N` to native `/threads:N`, so we have to pass the option in its native form to avoid an error.

Also pass the `threads` flag to lld-link as well

This updates the documentation since `ptr::addr_of!` and
`ptr::addr_of_mut!` are now stable. One might remove the distinction
between the sections `# On packed structs` and `# Examples`, as the old
section on packed structs was primarily to prevent users of doing unde-
fined behavior, which is not necessary anymore.
There is also a new section in "how to obtain a pointer", which referen-
ces the `ptr::addr_of!` macros.

This commit contains squashed commits from code review.

Co-authored-by: Joshua Nelson <joshua@yottadb.com>
Co-authored-by: Mara Bos <m-ou.se@m-ou.se>
Co-authored-by: Soveu <marx.tomasz@gmail.com>
Co-authored-by: Ralf Jung <post@ralfj.de>

…items

When encountering a path that can't have generics, do not call
`generics_of`. This would happen when writing something like
`path::this_is_a_mod<const_val>`.

Fix rust-lang#84831.

…, r=pnkfelix

Improve diagnostic for when field is never read

Related to (but does not close) rust-lang#81658

This completes the first step of ``````@pnkfelix's`````` [mentoring instructions](rust-lang#81658 (comment)) but does not actually improve the diagnostics (yet!). The two tests are heavily reduced versions of code from the original bug report.

I've confirmed that the reduced `field-used-in-ffi` test [fails on nightly](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=f0862c89ddca028c55c20a5ed05e679a) but [passes on stable](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=f0862c89ddca028c55c20a5ed05e679a). This confirms that the regression is reproduced correctly. The `drop-only-field` test is a case that ``````@pnkfelix`````` mentioned in his mentoring instructions. It is not a regression, but will come in handy when we make the diagnostic smarter by looking at whether the field type implements `Drop`.

Per the [rustc-dev-guide](https://rustc-dev-guide.rust-lang.org/tests/adding.html), each test includes a comment summarizing what it is about.

Update `ptr` docs with regards to `ptr::addr_of!`

This updates the documentation since `ptr::addr_of!` and `ptr::addr_of_mut!` are now stable. One might remove the distinction between the sections `# On packed structs` and `# Examples`, as the old section on packed structs was primarily to prevent users of doing undefined behavior, which is not necessary anymore.

Technically there is now wrong/outdated documentation on stable, but I don't think this is worth a point release 😉

Fixes rust-lang#83509.

``````@rustbot`````` modify labels: T-doc

…albini

Update RELEASES.md for 1.52.0

### [Rendered](https://github.com/rust-lang/rust/blob/relnotes-1.52.0/RELEASES.md)

r? ````@Mark-Simulacrum````
cc ````@rust-lang/release````

…r=dtolnay

Ensure TLS destructors run before thread joins in SGX

The excellent test is from ``@jethrogb``

For context see: rust-lang#83416 (comment)

…nkov

Fix#84467 linker_args with --target=sparcv9-sun-solaris

Trying to cross-compile for sparcv9-sun-solaris
getting a error message for -zignore

Introduced when -z -ignore was seperated here
22d0ab0

No formatting done

Reproduce

``` bash
rustup target add sparcv9-sun-solaris
cargo new --bin hello && cd hello && cargo run --target=sparcv9-sun-solaris
```

config.toml

[target.sparcv9-sun-solaris]
linker = "gcc"

…lnay

Add doc alias for `chdir` to `std::env::set_current_dir`

Searching for `chdir` in the Rust documentation produces no useful
results.

I wrote some code recently that called `libc::chdir` and manually
handled errors, because I didn't realize that the safe
`std::env::set_current_dir` existed. I searched for `chdir` and
`change_dir` and `change_directory` (the latter two based on the
precedent of unabbreviating set by `create_dir`), and I also read
through `std::fs` expecting to potentially find it there. Given that
none of those led to `std::env::set_current_dir`, I think that provides
sufficient justification to add this specific alias.

bump deps

openssl vulns:
https://rustsec.org/advisories/RUSTSEC-2021-0056.html
https://rustsec.org/advisories/RUSTSEC-2021-0055.html

openssl-src v111.12.0+1.1.1h -> v111.15.0+1.1.1k

not latest, but newer
openssl-sys v0.9.58 -> v0.9.61
openssl v0.10.30 -> v0.10.33

curl vulns: https://curl.se/docs/vuln-7.74.0.html

curl v0.4.34 -> v0.4.36
curl-sys v0.4.39+curl-7.74.0 -> v0.4.42+curl-7.76.0

…nts, r=tmandry

Report coverage `0` of dead blocks

Fixes: rust-lang#84018

With `-Z instrument-coverage`, coverage reporting of dead blocks
(for example, blocks dropped because a conditional branch is dropped,
based on const evaluation) is now supported.

If `instrument-coverage` is enabled, `simplify::remove_dead_blocks()`
finds all dropped coverage `Statement`s and adds their `code_region`s as
`Unreachable` coverage `Statement`s to the `START_BLOCK`, so they are
still included in the coverage map.

Check out the resulting changes in the test coverage reports in this PR.

I also addressed an outstanding issue/request to move coverage tests from run-make-fulldeps to run-make (in commit 2).

Fixes: rust-lang#83830

r? ``````@tmandry``````
cc: ``````@wesleywiser``````

…nkov

Reduce duplication in `impl_dep_tracking_hash` macros

Cherry-picked from rust-lang#84234 since it will be a while until it lands.

Account for unsatisfied bounds in E0599

Fix rust-lang#84769, follow up to rust-lang#84499, rust-lang#83667.

…olnay

use else if in std library

Decreases indentation and improves readability

…acrum

rustbuild: Pass a `threads` flag that works to windows-gnu lld

MinGW driver for COFF LLD doesn't currently translate GNU-style `--threads=N` to native `/threads:N`, so we have to pass the option in its native form to avoid an error.

Also pass the `threads` flag to lld-link (windows-msvc lld) as well.

…riplett

Clarify documentation for `[T]::contains`. Fixes rust-lang#84877.

Change the documentation to correctly characterize when the suggested alternative to `contains` applies, and correctly explain why it works.

…tting, r=Dylan-DPC

platform-support: Center the contents of the `std` and `host` columns

Minor formatting improvement.

Do not ICE on invalid const param

When encountering a path that can't have generics, do not call
`generics_of`. This would happen when writing something like
`path::this_is_a_mod<const_val>`.

Fix rust-lang#84831.