2026-06-08 — Last Week in Carbon

[josh11b]

Updates on leads issues

• Decisions
  • (none)
• New issues
  • #7300 Object-like macros without parentheses behave differently in Carbon than in C++
• Active discussions
  • (none)

Updates on proposals

• Decisions
  • #7140 Orphan rule for scopes
    • Approved
  • #7308 Clarify support for imported object-like macros
    • #interop discussed
    • Proposed & Approved
• New RFC proposals
  • #7299 Allow rewrites in impls constraints
  • #7314 CharLiteral difference should be an IntLiteral
• Active discussions
  • (none)

Updates on moderation across our community spaces (Discord and GitHub)

• Conduct team updates:
  • none
• Moderation interventions last week:
  • none
• Activity in the past week:
  • BLOCKED: new landing page mockup that would incorporate self-learning quizzes in #7237
  • BLOCKED: discussing creating self-learning quizzes around the language, alongside more community culture-oriented ones.
  • BLOCKED: TypeScript community interview summary for the moderation team
  • 1 new contributor! 🎉
  • 9 authors have pushed 34 commits to trunk.
  • On trunk, 922 files have changed and there have been 63,274 additions and 56,198 deletions
  • We merged 34 PRs, opened 5 additional PRs, closed 1 issue, and opened 3 new issues.

Activity on toolchain

• #toolchain SIgnature of functions in vtable #7198
• #toolchain Virtual methods have to pass self by reference
• 06-02 Should we track the ClangDeclId on exported functions?
• PRs:
  • field initializer imports in #7287
  • mangling in #7283
  • array type interop in #7285
  • type alignment in #7290
  • where in #7282
  • fingerprints. by in #7292 #7297
  • C++ range for in #7293 #7294
  • dev infra in #7296 #7244 #7306
  • global and static variable interop in #7298 #7309
  • Numeric conversions in #7275 #7279
  • reference return in #7301
  • global init in #7302
  • function interop in #7303 #7304
  • access control in #7312 #7310
  • prelude in #7313
  • build toolchain faster in #7319 #7320
  • code style in #7307
  • others in #6912 #7305 #7311
• New contributors:
  • @antangelo made their first contribution in #6912

Activity on memory safety

• #safety Article about safety changes in C#

Other active discussions

These include Discord Chat, GitHub Discussions, or open discussion sessions.

• #style auto and Hungarian notation
• #language-questions Does the toolchain now support arrays as shown in the README?
  • The README's use of arrays is out of date.
• #infra Switching from pre-commit to prek in #7244. See the PR for how to update local clients.
  • How to install prek? There are several options.
• #generics-and-templates How to disambiguate a weird .Self example.
• #generics-and-templates Working on proposal to allow rewrites in more contexts.
• #infra One contributor wrote up how they use `jj` with Carbon.
• #generics-and-templates Making a constraint private causes error in seemingly-unrelated code.
• 06-04 What to call .Self attached to a where?
  • Led to discussion of an alternate implementation approach.
  • #generics-and-templates difficulties implementing it.
• #infra Some old PRs' diffs aren't loading on GitHub.
• #interop Operations on C++ enums

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