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fix false positives for unused_parens around unary and binary operations - #110257

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Apr 17, 2023
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fix false positives for unused_parens around unary and binary operations#110257
bors merged 2 commits into
rust-lang:masterfrom
lukas-code:why-would-anyone-write-code-like-that-anyway

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@lukas-code

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r? @oli-obk

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@rustbotrustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Apr 12, 2023
@lukas-code

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wait why does this parse

fnwhat(){loop{ifbreak{}}}

but not

fnwhat(){loop{ifreturn{}}}

is this a bug or a feature?

@DaniPopes

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I believe that can be answered in rust-quiz #20 😄

@lukas-code

lukas-code commented Apr 12, 2023

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Yeah, looks like this is a feature, and removing the parens can change behavior, so not linting to remove them is correct.

@lukas-code

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I pushed a second commit to deal with break more correctly.

@lukas-code
lukas-codeforce-pushed the why-would-anyone-write-code-like-that-anyway branch from 8eb0bc9 to 0d0949dCompareApril 13, 2023 16:13
@lukas-codelukas-code changed the title fix false positive for unused_parens around binary operationsfix false positive for unused_parens around unary and binary operationsApr 13, 2023
@lukas-codelukas-code changed the title fix false positive for unused_parens around unary and binary operationsfix false positives for unused_parens around unary and binary operationsApr 13, 2023
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@bors r+ rollup

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bors commented Apr 17, 2023

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📌 Commit 0d0949d has been approved by oli-obk

It is now in the queue for this repository.

@borsbors 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 Apr 17, 2023
bors added a commit to rust-lang-ci/rust that referenced this pull request Apr 17, 2023
…iaskrgr
Rollup of 9 pull requests
Successful merges:
- rust-lang#104055 (Migrate diagnostics in `rustc_borrowck`)
- rust-lang#110257 (fix false positives for `unused_parens` around unary and binary operations)
- rust-lang#110313 (allow `repr(align = x)` on inherent methods)
- rust-lang#110337 (Correct default value for default-linker-libraries)
- rust-lang#110386 (Clean up traversal macros)
- rust-lang#110394 (Various minor Idx-related tweaks)
- rust-lang#110425 (Encode def span for `ConstParam`)
- rust-lang#110434 (Check freeze with right param-env in `deduced_param_attrs`)
- rust-lang#110455 (tests: adapt for LLVM change 5b386b8)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
@bors
bors merged commit 06d12f6 into rust-lang:masterApr 17, 2023
@rustbotrustbot added this to the 1.71.0 milestone Apr 17, 2023
@lukas-code
lukas-code deleted the why-would-anyone-write-code-like-that-anyway branch April 17, 2023 18:49
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false positive for unused_parens with binary op if rhs needs parens

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@lukas-code@rustbot@DaniPopes@oli-obk@bors