Tracking Issue for offset_of_slice #126151
Labels
B-experimental
Blocker: In-tree experiment; RFC pending, not yet approved or unneeded (requires FCP to stabilize).
B-unstable
Blocker: Implemented in the nightly compiler and unstable.
C-tracking-issue
Category: An issue tracking the progress of sth. like the implementation of an RFC
F-offset_of_slice
`#![feature(offset_of_slice)]`
S-tracking-needs-to-bake
Status: The implementation is "complete" but it needs time to bake.
T-lang
Relevant to the language team, which will review and decide on the PR/issue.
T-libs-api
Relevant to the library API team, which will review and decide on the PR/issue.
Comments
RalfJung
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C-tracking-issue
bors
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Jun 9, 2024
…-errors offset_of: allow (unstably) taking the offset of slice tail fields Fields of type `[T]` have a statically known offset, so there is no reason to forbid them in `offset_of!`. This PR adds the `offset_of_slice` feature to allow them. I created a tracking issue: rust-lang#126151.
fmease
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matthiaskrgr
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Jul 7, 2024
The container doesn't have to be sized, but the field must be sized (at least until rust-lang#126151 is stable).
matthiaskrgr
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Jul 7, 2024
…=Nilstrieb Describe Sized requirements for mem::offset_of The container doesn't have to be sized, but the field must be sized (at least until rust-lang#126151 is stable).
rust-timer
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Jul 7, 2024
Rollup merge of rust-lang#127354 - nicholasbishop:bishop-sized-doc, r=Nilstrieb Describe Sized requirements for mem::offset_of The container doesn't have to be sized, but the field must be sized (at least until rust-lang#126151 is stable).
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The feature gate for the issue is
#![feature(offset_of_slice)].This is a tracking issue for allowing offset_of to determine the offset of unsized fields whose tail is a slice, and hence their alignment and their offset is statically known.
Steps
offset_of_slice#139673Implementation history
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