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[redundant_guards]: don't lint on float literals #11305

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Aug 8, 2023
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@y21 y21 commented Aug 8, 2023

Fixes #11304

changelog: [redundant_guards]: don't lint on float literals

r? @Centri3 i figured you are probably a good reviewer for this since you implemented the lint ^^

@rustbot rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties label Aug 8, 2023
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Just one thing, other than that this looks fine

clippy_lints/src/matches/redundant_guards.rs Show resolved Hide resolved
_ => todo!(),
}
match FloatWrapper(0.1) {
x if x == FloatWrapper(0.0) => todo!(),
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We'd ideally suggest FloatWrapper(f) if f == 0.0 here, but that can be done in the future.

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Centri3 commented Aug 8, 2023

Will approve once CI finishes

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Centri3 commented Aug 8, 2023

@bors r+

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bors commented Aug 8, 2023

📌 Commit b615650 has been approved by Centri3

It is now in the queue for this repository.

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bors commented Aug 8, 2023

⌛ Testing commit b615650 with merge 7c595b4...

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bors commented Aug 8, 2023

☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test
Approved by: Centri3
Pushing 7c595b4 to master...

@bors bors merged commit 7c595b4 into rust-lang:master Aug 8, 2023
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@bors bors mentioned this pull request Aug 8, 2023
github-merge-queue bot pushed a commit that referenced this pull request Nov 17, 2024
#13698)

Two changes to `redundant_guards`:

- Lint float literals. We used to do that before but that was changed in
#11305 because at the time there was a future compat warning and it was
planned to make pattern matching floats a hard error.

In rust-lang/rust#116284 it was decided to actually remove the lint and
only make matching `NAN` specifically a hard error. The `NAN` part isn't
relevant/important here because this PR only changes what literals are
warned and `f64::NAN` isn't a literal, but I've added a test anyway to
make sure we continue to not lint there.
- Don't lint CStr literals because that can't be a pattern right now
(fixes #13681)

changelog: none
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x if x == <float literal> is marked as "redundant guard"
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