rustfmt deletes comment after arrow in Fn type
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A-comments
C-bug
I-unexpectedly-removes-code
- Dominant language
- Rust
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- 24
Description
Input:
fn foo(f: &dyn Fn(i32) -> /*result*/ i32) {
}
after rustfmt becomes
fn foo(f: &dyn Fn(i32) -> i32) {}
Expected
Preserve /*result*/ comment
Observed
Comment deleted.
Contributor guide
First steps
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- Open a pull request that references the issue number.
Research direction
Reproduce the issue with the provided Fn type snippet and inspect rustfmt's handling of comments after the arrow in function types. Trace the formatting path for this syntax, then verify that running rustfmt preserves the /result/ comment.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100