Make Ipv6Addr::multicast_scope() exhaustive#154196
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rust-bors[bot] merged 2 commits intorust-lang:mainfrom Mar 28, 2026
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Make Ipv6Addr::multicast_scope() exhaustive#154196rust-bors[bot] merged 2 commits intorust-lang:mainfrom
Ipv6Addr::multicast_scope() exhaustive#154196rust-bors[bot] merged 2 commits intorust-lang:mainfrom
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And make `Ipv6MulticastScope` exhaustive, with `repr(u8)` and the proper discriminant values. The variants for the two reserved scopes are gated behind a perma-unstable feature, in order to avoid committing to names for them. [IETF RFC 4291](https://datatracker.ietf.org/doc/html/rfc4291#section-2.7) and [IETF RFC 7346](https://datatracker.ietf.org/doc/html/rfc7346#section-2) define the list of multicast scopes. The former document says: > scopes labeled "(unassigned)" are available for administrators > to define additional multicast regions.
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Rollup of 9 pull requests Successful merges: - #154357 (uefi: extend comment for TcpStream Send impl) - #154410 (Clean up the API for opening/checking incremental-compilation files ) - #154081 (format safety doc of Rc/Arc::from_raw/from_raw_in) - #154110 (Change "error finalizing incremental compilation" text and emit it as a note, not a warning) - #154196 (Make `Ipv6Addr::multicast_scope()` exhaustive) - #154221 (`vec::as_mut_slice()`: use lowercase "isize" in safety comment) - #154234 (Use common Timestamp impl in Hermit (attempt 2)) - #154396 (chore(deps): update rust crate tar to v0.4.45) - #154488 (Revert "Unstable book options parser")
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Rollup of 9 pull requests Successful merges: - #154357 (uefi: extend comment for TcpStream Send impl) - #154410 (Clean up the API for opening/checking incremental-compilation files ) - #154081 (format safety doc of Rc/Arc::from_raw/from_raw_in) - #154110 (Change "error finalizing incremental compilation" text and emit it as a note, not a warning) - #154196 (Make `Ipv6Addr::multicast_scope()` exhaustive) - #154221 (`vec::as_mut_slice()`: use lowercase "isize" in safety comment) - #154234 (Use common Timestamp impl in Hermit (attempt 2)) - #154396 (chore(deps): update rust crate tar to v0.4.45) - #154488 (Revert "Unstable book options parser")
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Rollup merge of #154196 - Jules-Bertholet:ipv6-multicast-discriminant, r=Mark-Simulacrum Make `Ipv6Addr::multicast_scope()` exhaustive And make `Ipv6MulticastScope` exhaustive, with `repr(u8)` and the proper discriminant values. The variants for the two reserved scopes are gated behind a perma-unstable feature, in order to avoid committing to names for them. [IETF RFC 4291](https://datatracker.ietf.org/doc/html/rfc4291#section-2.7) and [IETF RFC 7346](https://datatracker.ietf.org/doc/html/rfc7346#section-2) define the list of multicast scopes. The former document says: > scopes labeled "(unassigned)" are available for administrators to define additional multicast regions. Tracking issue: #27709 @rustbot label A-io
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And make
Ipv6MulticastScopeexhaustive, withrepr(u8)and the proper discriminant values. The variants for the two reserved scopes are gated behind a perma-unstable feature, in order to avoid committing to names for them.IETF RFC 4291 and IETF RFC 7346 define the list of multicast scopes. The former document says:
Tracking issue: #27709
@rustbot label A-io