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Relate recursive record layout to normalized size formulas - #3832

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@joshlf

@joshlf joshlf commented Oct 8, 2026 •

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A containing record must retain its field's complete size, including
padding inside a packed nested field. Define recursive field placement,
alignment, physical tail offset and size for nested record descriptions.

Prove that compiling a valid description into the normalized trailing
formula preserves size for every natural metadata count, as well as
element size and physical offset. Establish tail containment and the
prefix-state laws needed to compose arbitrary field lists.

Agent-authored-by: AI agent acting on joshlf's behalf


Latest Update: v8 — Compare vs v7

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📝 Code Review ✅ Completed 2026-10-08T10:23:34.276990Z a6ed079 PR opened
🔒 Security Review ✅ Completed 2026-10-08T10:23:09.156334Z a6ed079 PR opened
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💡 Codex Review

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Reviewed commit: a6ed079326

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Comment on lines +25 to +26
SEMANTICS.md states the separate premise connecting completed recursive
descriptions to Rust; the algebra in this module alone does not establish

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P2 Badge Avoid claiming the missing semantics document exists

The repository contains no verification/aeneas/SEMANTICS.md (confirmed by a repo-wide file and reference search), and workspace.py explicitly falls back when that file is absent. Consequently, this new statement directs reviewers to a nonexistent document for the premise connecting these definitions to Rust, leaving the verification trust boundary it claims to document unavailable. Add the document in this change or describe the premise without asserting that it exists.

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.16%. Comparing base (409c592) to head (c0789b6).

Additional details and impacted files
@@                        Coverage Diff                         @@
##           Gwxt5czbhuvpuqeh2moqjljsiyswi6fa2    #3832   +/-   ##
==================================================================
  Coverage                              60.16%   60.16%           
==================================================================
  Files                                     22       22           
  Lines                                   3791     3791           
==================================================================
  Hits                                    2281     2281           
  Misses                                  1510     1510           

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A containing record must retain its field's complete size, including
padding inside a packed nested field. Define recursive field placement,
alignment, physical tail offset and size for nested record descriptions.

Prove that compiling a valid description into the normalized trailing
formula preserves size for every natural metadata count, as well as
element size and physical offset. Establish tail containment and the
prefix-state laws needed to compose arbitrary field lists.

gherrit-pr-id: Gxignc3ksu7cmxhmlmbur2a7hqk44h5rp
Agent-authored-by: AI agent acting on joshlf's behalf
@joshlf
joshlf force-pushed the Gxignc3ksu7cmxhmlmbur2a7hqk44h5rp branch from c0789b6 to fe154b9 Compare October 9, 2026 02:21
@joshlf
joshlf force-pushed the Gwxt5czbhuvpuqeh2moqjljsiyswi6fa2 branch from 409c592 to 67282b0 Compare October 9, 2026 02:21
@joshlf
joshlf force-pushed the Gxignc3ksu7cmxhmlmbur2a7hqk44h5rp branch from fe154b9 to e1c0987 Compare October 10, 2026 00:00
@joshlf
joshlf force-pushed the Gwxt5czbhuvpuqeh2moqjljsiyswi6fa2 branch from 67282b0 to 4726280 Compare October 10, 2026 00:00
@joshlf joshlf changed the title Refine recursive record semantics into normalized layouts Relate recursive record layout to normalized size formulas Oct 10, 2026

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