[Repo Assist] Monthly Activity 2026-06

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Activity for June 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention (excludes items already actioned and checked off).

• Close issue #5418: confirmed fixed (PR Fix wrong warning 20 range in sequential expressions (#5735) #19504 merged 2026-04-11), existing test coverage in WarnExpressionTests.fs — View comment
• Check comment on #13099: Task CE optimizer correctness bug — (someFunctionWithReturnType()).End silently optimized away in Release mode — View
• Check comment on #16982: delegate keyword breaks semantic highlighting — reproduced via FCS, AI-thinks-windows-only removed — View
• Check comment on #18841: let _ = &s still raises FS0421 — AI-thinks-issue-fixed was incorrectly applied then removed — View
• Check comments on #16034, #16464: confirmed still present, Repo Assist provided repro details

Additional observations for maintainer's attention

• Issue #13099: High-impact optimizer correctness bug — (someFunctionWithReturnType()).End where .End is a unit property causes the function call to be optimized away in Release mode.
• Issue #16292: Debug-only codegen bug — SRTP with mutable struct enumerator causes infinite loop in Debug builds.

Future Work for Repo Assist

• Continue scanning backlog (cursor at 0, filtering by activity since last run)
• All AI-thinks-windows-only issues have been revisited (cursor at 18119)
• AI-thinks-issue-fixed issue Wrong expression is ignored warning range #5418 verified with existing test coverage — awaiting maintainer close
• Issue Completion is available for some obsolete members only #13512 closed by maintainer on 2026-05-29 ✓

Run History

2026-06-01 01:34 UTC — Run

• 🔍 Scanned for pre-2024 bugs with activity since 2026-05-31: none found
• 🔍 Checked AI-thinks-windows-only issues: none above cursor (woc=18119)
• 🔍 Checked AI-thinks-issue-fixed issues: Wrong expression is ignored warning range #5418 already verified (rtc=14566); Completion is available for some obsolete members only #13512 closed by maintainer
• 📝 Updated suggested actions: removed Completion is available for some obsolete members only #13512 (closed)

2026-05-30 12:53 UTC — Run

• 🔍 Scanned for pre-2024 bugs with activity since 2026-05-27: {||} cannot be used as a type #6941 has maintainer design discussion (no Repo Assist action needed)
• 🔍 Checked AI-thinks-windows-only issues: none above cursor (woc=18119)
• 🔍 Checked AI-thinks-issue-fixed issues: Wrong expression is ignored warning range #5418 already verified with test coverage in prior run (rtc=14566)
• 📝 Created June 2026 monthly activity issue (May issue [Repo Assist] Monthly Activity 2026-05 #19675 closed by maintainer)

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