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fix: do not borrow shell across registry query #13647

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merged 1 commit into from
Mar 26, 2024
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weihanglo
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@weihanglo weihanglo commented Mar 26, 2024

What does this PR try to resolve?

Fixes #13646

How should we test and review this PR?

$ git clone https://github.com/taiki-e/easytime
$ cd easytime
$ cargo generate-lockfile
$ cargo update -Z minimal-versions --verbose

Additional information

A better and safer way is always calling gctx.shell() instead.

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rustbot commented Mar 26, 2024

r? @ehuss

rustbot has assigned @ehuss.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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@rustbot rustbot added Command-generate-lockfile S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 26, 2024
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Talked with @Muscraft and agree that it's safer to use gctx.shell() if there are other refactor moving code around. It is also unlikely to be the performance bottleneck.

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Thanks for this! gctx.shell() is tricky, and I have shot myself in the foot with it many times (most recently when working on the linting system). I think removing bindings from it everywhere is a good idea.

Do you think it would be a good idea to add a test for this?

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Do you think it would be a good idea to add a test for this?

I lean toward not. Such a test cannot systematically prevent this kind of runtime borrow checking bug.

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Feel free to r= me when CI passes if I don't get to it first

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@bors r+


I tested this change locally against https://github.com/taiki-e/easytime and it fixes the panic

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bors commented Mar 26, 2024

📌 Commit 667803c has been approved by Muscraft

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Mar 26, 2024
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bors commented Mar 26, 2024

⌛ Testing commit 667803c with merge 499a61c...

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bors commented Mar 26, 2024

☀️ Test successful - checks-actions
Approved by: Muscraft
Pushing 499a61c to master...

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bors commented Mar 26, 2024

☀️ Test successful - checks-actions
Approved by: Muscraft
Pushing 499a61c to master...

@bors bors merged commit 499a61c into rust-lang:master Mar 26, 2024
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bors commented Mar 26, 2024

👀 Test was successful, but fast-forwarding failed: 422 Changes must be made through a pull request.

bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 26, 2024
Update cargo

1 commits in a510712d05c6c98f987af24dd73cdfafee8922e6..499a61ce7a0fc6a72040084862a68b2603e770e8
2024-03-25 03:45:54 +0000 to 2024-03-26 04:17:04 +0000
- fix: do not borrow shell across registry query (rust-lang/cargo#13647)

r? ghost

<hr>

This update includes a fix for a panic within cargo that was noted in [cargo#13646](rust-lang/cargo#13646)
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 26, 2024
…rkingjubilee

Update cargo

5 commits in a510712d05c6c98f987af24dd73cdfafee8922e6..499a61ce7a0fc6a72040084862a68b2603e770e8
2024-03-25 03:45:54 +0000 to 2024-03-26 04:17:04 +0000
- fix: do not borrow shell across registry query (rust-lang/cargo#13647)
- Do not strip debuginfo by default for MSVC (rust-lang/cargo#13630)
- chore(deps): update msrv (rust-lang/cargo#13577)
- Fix doc collision for lib/bin with a dash in the inferred name. (rust-lang/cargo#13640)
- refactor: Make lint names snake_case (rust-lang/cargo#13635)

r? ghost
@rustbot rustbot added this to the 1.79.0 milestone Mar 26, 2024
@weihanglo weihanglo deleted the shell branch March 26, 2024 12:36
epage added a commit to epage/cargo that referenced this pull request Mar 26, 2024
This intentionally borrows from `RefCell`s before conditional code
to try to prevent regressions like rust-lang#13646 without exhaustively
covering every case that could hit these `BorrowMutError`s with
complicated tests.

I tested this by ensuring the registry code path panicked before
rebasing on top of rust-lang#13647.
Once I rebased, the panic went away.
weihanglo pushed a commit to weihanglo/cargo that referenced this pull request Mar 26, 2024
This intentionally borrows from `RefCell`s before conditional code
to try to prevent regressions like rust-lang#13646 without exhaustively
covering every case that could hit these `BorrowMutError`s with
complicated tests.

I tested this by ensuring the registry code path panicked before
rebasing on top of rust-lang#13647.
Once I rebased, the panic went away.

Co-authored-by: Ed Page <eopage@gmail.com>
bors added a commit that referenced this pull request Mar 26, 2024
test: Add asserts to catch BorrowMutError's

### What does this PR try to resolve?

This intentionally borrows from `RefCell`s before conditional code to try to prevent regressions like #13646 without exhaustively covering every case that could hit these `BorrowMutError`s with complicated tests.

### How should we test and review this PR?

I tested this by ensuring the registry code path panicked before rebasing on top of #13647.
Once I rebased, the panic went away.

### Additional information

Split off from #13649 to try to avoid appveyor
charmitro pushed a commit to charmitro/cargo that referenced this pull request Sep 13, 2024
This intentionally borrows from `RefCell`s before conditional code
to try to prevent regressions like rust-lang#13646 without exhaustively
covering every case that could hit these `BorrowMutError`s with
complicated tests.

I tested this by ensuring the registry code path panicked before
rebasing on top of rust-lang#13647.
Once I rebased, the panic went away.

Co-authored-by: Ed Page <eopage@gmail.com>
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Panic with "already borrowed: BorrowMutError" since nightly-2024-03-26
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