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Rollup of 6 pull requests #97243

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Successful merges:

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r? @ghost
@rustbot modify labels: rollup

Create a similar rollup

c410-f3r and others added 16 commits May 20, 2022 10:53
Add or-pattern syntax in argument position
Use unicode identifiers and a unicode emoji in weird-exprs.rs
Move some tests to more reasonable directories

r? `@petrochenkov`
Do leak check after function pointer coercion

cc rust-lang#73154

I still need to clean diagnostics just a tad, but figured I would put this up anyways.

This change is made in order to make match arm coercion order-independent.

Basically, any time we do function pointer coercion, we follow it by doing a leak check. This is necessary because the LUB code doesn't handler higher-ranked things correctly, leading us to "coerce", but use the wrong type. A proper fix is to actually fix that code (so the type returned by `unify_and` is a supertype of both `a` and `b` if `Ok`). However, that requires a more in-depth fix, likely heavily overlapping with the new subtyping changes.

Here, I've been conservative and error early if we generate unsatisfiable constraints. Note, this should *mostly* only affect NLL, since migrate mode falls back to the LUB implementation (followed by leak check), whereas NLL only does sub.

There could be other coercion code that has an order-dependence where a leak check in the coercion code might be useful. However, this is more of a spot-fix for rust-lang#73154 than a "permanent" fix, since we likely want to go the other way long-term, and allow this pattern without error.

r? `@nikomatsakis`
…riddle

Add eslint checks

The first check is to ensure that `=>` is always surrounded with whitespaces.

The second is to ensure that the dict objects looks like this: `{"a": 2}` and not `{"a" : 2}` or `{"a":2}`.

r? `@notriddle`
Remove quadratic behaviour from -Zunpretty=hir-tree.

Closes rust-lang#97115
Add some more weird-exprs

Continuing from rust-lang#86713 (which stalled due to a thinking emoji), I'd like to "improve" the `weird-exprs.rs`-file (as I can't reopen that PR).
@rustbot rustbot added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. rollup A PR which is a rollup labels May 21, 2022
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@bors r+ rollup=never p=5

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bors commented May 21, 2022

📌 Commit 06971dc 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 21, 2022
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bors commented May 21, 2022

🔒 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-dvqbuef (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-dvqbuef --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
Auto-merging compiler/rustc_typeck/src/check/demand.rs
Auto-merging compiler/rustc_typeck/src/check/coercion.rs
Auto-merging compiler/rustc_mir_build/src/thir/cx/mod.rs
CONFLICT (content): Merge conflict in compiler/rustc_mir_build/src/thir/cx/mod.rs
Auto-merging compiler/rustc_mir_build/src/thir/cx/block.rs
Auto-merging compiler/rustc_mir_build/src/build/matches/mod.rs
CONFLICT (content): Merge conflict in compiler/rustc_mir_build/src/build/matches/mod.rs
Auto-merging compiler/rustc_hir/src/hir.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 21, 2022
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bors commented May 21, 2022

☔ The latest upstream changes (presumably #97239) made this pull request unmergeable. Please resolve the merge conflicts.

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@bors r-

@Dylan-DPC Dylan-DPC closed this May 21, 2022
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9 participants