Add splat formatting regression tests - #7032
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Note: these tests also act as regression tests for #6590 . |
This was referenced Aug 18, 2026
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Unstable Rust compiler feature tracking issue: rust-lang/rust#153629
I created these tests to track down a code formatting bug where the
#[rustc_splat]attribute is deleted in function pointer types.These tests pass on recent nightly versions of rustfmt, but fail on recent beta (2026-08-14) and stable versions. I've asked how to fix this in Zulip.
Update: this bug was fixed in #6590 which is pending a rust-lang/rust subtree sync. When the sync happens, nightly rustfmt releases will be fixed.
The syntax of this feature is still unstable, so the goal of these tests is to check attribute formatting.