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Tracking issue for release notes of #157973: Distinguish `repr(C)` ZSTs from others in ABI compatibility rules

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
68/100
Issue type
Documentation
Clarity
Mostly clear
Activity status
Active
Tech stack
rust

Research direction

Read the release-notes guidance and inspect PR #157973 to understand the change and choose the appropriate release-note category. Compare the wording with previous releases, then replace the placeholder entry with a succinct description; add a release blog section only if the change is notable enough.

Written by the indexing model from the issue text.

Description

A-ABI needs-triage relnotes relnotes-needs-review relnotes-tracking-issue T-lang T-libs T-opsem

This issue tracks the release notes text for #157973.

cc @Jules-Bertholet, @CAD97 -- original issue/PR authors and assignees for drafting text

See the forge.rust-lang.org chapter about release notes for an overview of how the release team makes use of these tracking issues.

Release notes text

This section should be edited to specify the correct category(s) for the change, with succinct description(s) of what changed. Some things worth considering:

  • Does this need an additional compat notes section?
  • Was this a libs stabilization that should have additional headers to list new APIs under Stabilized APIs and Const Stabilized APIs?
# Language/Compiler/Libraries/Stabilized APIs/Const Stabilized APIs/Rustdoc/Compatibility Notes/Internal Changes/Other
- [Distinguish `repr(C)` ZSTs from others in ABI compatibility rules](https://github.com/rust-lang/rust/pull/157973)

[!TIP]
Use the previous releases for inspiration on how to write the release notes text and which categories to pick.

Release blog section

If this change is notable enough for inclusion in the blog post then this section should be edited to contain a draft for the blog post. Otherwise leave it empty.

[!NOTE]

If a blog post section is required the release-blog-post label should be added (@rustbot label +release-blog-post) to this issue as otherwise it may be missed by the release team.

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