mirror of
https://github.com/rust-lang/rust.git
synced 2026-05-05 03:24:06 +03:00
bors
c648bd5558
Fix derived PartialOrd operators The derived implementation of `partial_cmp` compares matching fields one by one, stopping the computation when the result of a comparison is not equal to `Some(Equal)`. On the other hand the derived implementation for `lt`, `le`, `gt` and `ge` continues the computation when the result of a field comparison is `None`, consequently those operators are not transitive and inconsistent with `partial_cmp`. Fix the inconsistency by using the default implementation that fall-backs to the `partial_cmp`. This also avoids creating very deeply nested closures that were quite costly to compile. Fixes #81373. Helps with #81278, #80118.