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Rollup of 15 pull requests #84928

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@rustbot modify labels: rollup

Create a similar rollup

mzohreva and others added 30 commits April 21, 2021 14:45
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.
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.
Clippy: Decreases indentation and improves readability

Signed-off-by: wcampbell <[email protected]>
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 <[email protected]>
Co-authored-by: Mara Bos <[email protected]>
Co-authored-by: Soveu <[email protected]>
Co-authored-by: Ralf Jung <[email protected]>
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"
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`````
Dylan-DPC added 8 commits May 5, 2021 00:17
…nkov

Reduce duplication in `impl_dep_tracking_hash` macros

Cherry-picked from rust-lang#84234 since it will be a while until it lands.
…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.
…, r=jyn514

rustdoc: revert deref recur to resume inclusion of impl ExtTrait<Local> for ExtType

As discussed here: rust-lang#82465 (comment), Revert PR rust-lang#80653 to resolve issue rust-lang#82465.

Issue rust-lang#82465 was we had stopped including certain trait implementations, namely implementations on an imported type of an imported trait *instantiated on a local type*. That bug was injected by PR rust-lang#80653.

Reverting rust-lang#80653 means we don't list all the methods that you have accessible via recursively applying `Deref`.

[Discussion in last week's rustc triage meeting](https://zulip-archive.rust-lang.org/238009tcompilermeetings/19557weekly2021042954818.html#236680594) led us to conclude that the bug was worse than the enhancement, and there was not an obvious fix for the bug itself. So for the short term we  remove the enhancement, while in the long term we will work on figuring out a way to have our imported trait implementation cake and eat it too.
…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.
@rustbot rustbot added the rollup A PR which is a rollup label May 4, 2021
@Dylan-DPC-zz
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@bors r+ rollup=never p=5

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bors commented May 4, 2021

📌 Commit 5d8f6ff has been approved by Dylan-DPC

@bors bors added the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label May 4, 2021
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bors commented May 4, 2021

🔒 Merge conflict

This pull request and the master branch diverged in a way that cannot be automatically merged. Please rebase on top of the latest master branch, and let the reviewer approve again.

How do I rebase?

Assuming self is your fork and upstream is this repository, you can resolve the conflict following these steps:

  1. git checkout rollup-du7jvfo (switch to your branch)
  2. git fetch upstream master (retrieve the latest master)
  3. git rebase upstream/master -p (rebase on top of it)
  4. Follow the on-screen instruction to resolve conflicts (check git status if you got lost).
  5. git push self rollup-du7jvfo --force-with-lease (update this PR)

You may also read Git Rebasing to Resolve Conflicts by Drew Blessing for a short tutorial.

Please avoid the "Resolve conflicts" button on GitHub. It uses git merge instead of git rebase which makes the PR commit history more difficult to read.

Sometimes step 4 will complete without asking for resolution. This is usually due to difference between how Cargo.lock conflict is handled during merge and rebase. This is normal, and you should still perform step 5 to update this PR.

Error message
Removing src/test/rustdoc/deref-recursive.rs
Removing src/test/rustdoc/deref-recursive-pathbuf.rs
Removing src/test/rustdoc-ui/deref-recursive-cycle.rs
Removing src/test/run-make-fulldeps/coverage/coverage_tools.mk
Removing src/test/run-make-fulldeps/coverage/compiletest-ignore-dir
Auto-merging src/librustdoc/passes/collect_trait_impls.rs
CONFLICT (content): Merge conflict in src/librustdoc/passes/collect_trait_impls.rs
Auto-merging src/librustdoc/html/render/mod.rs
Auto-merging src/librustdoc/html/render/context.rs
Automatic merge failed; fix conflicts and then commit the result.

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels May 4, 2021
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bors commented May 4, 2021

☔ The latest upstream changes (presumably #84707) made this pull request unmergeable. Please resolve the merge conflicts.

@jackh726 jackh726 closed this May 5, 2021
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Standard library documentation for alternatives to [T]::contains suggests Borrow is needed when it is not