mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-07 04:40:11 +00:00

If we only check for duplicate spans when `prev` is unmodified, we reduce the number of situations that `update_pending_dups` needs to handle. This could potentially change the coverage spans we produce in some unknown corner cases, but none of our current coverage tests indicate any change.