GoKawiilRust compiler stabilizes the never type after two-year effort
Rust contributor 'waffle' landed stabilization of the language's never type (!) on August 24, ending more than two years of work. The change required a small breaking adjustment to earlier Rust editions, so maintainers spent extensive time verifying it wouldn't break existing code in the wild.
GoKawiil's interpretation of the reporting above, not reported fact.
The never type lets the compiler know a function can't return or that a value can never occur, enabling more efficient generic code, such as marking infallible conversions with no real error type. Because Rust's edition system promises backward compatibility, even small breaking changes like this require unusually careful, multi-year validation before shipping.
- Rust's never type (!) marks functions that never return or values that cannot occur.
- Stabilizing it took over two years due to a minor breaking change affecting prior editions.
- The type improves generic code efficiency, such as representing infallible conversions without a real error type.
Source: lwn.net, 2026-09-09
Published there as: “Stabilizing Rust's Never Type”
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