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Lock coverage files #259

Merged
merged 1 commit into from Jul 27, 2022
Merged

Lock coverage files #259

merged 1 commit into from Jul 27, 2022

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smoelius
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This PR suggests a method for locking coverage files when writing to them.

Currently, there appears to be a race. Specifically, the tester crate runs test functions in separate threads, similar to how libtest does. Thus, the test functions' writes to the coverage file can become interleaved, causing the file to become corrupted.

I have observed corrupted coverage files while testing Clippy, and I suspect this to be the cause.

@Manishearth Manishearth merged commit 6b52ec9 into Manishearth:master Jul 27, 2022
@smoelius smoelius deleted the lock-coverage-files branch July 27, 2022 19:29
@smoelius
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Thanks, @Manishearth.

@smoelius
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@Manishearth Would it be possible to get a new release with this fix?

I suspect this bug was in part the cause of the recent rustup failure: https://github.com/rust-lang/rust-clippy/actions/runs/3106438892/jobs/5033324694#step:11:911

@Munksgaard
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@smoelius v0.9.0 has now been published and includes your fix :-)

Thanks for the contribution!

bors added a commit to rust-lang/rust-clippy that referenced this pull request Sep 23, 2022
Upgrade `compiletest-rs` dependency

From `0.8` to `0.9`.

The new version includes a [fix](Manishearth/compiletest-rs#259) for what I suspect was one cause of the recent rustup failure: https://github.com/rust-lang/rust-clippy/actions/runs/3106438892/jobs/5033324694#step:11:911

changelog: none
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3 participants