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Reviewed commit: 96c6b273a5
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| /// NestedReference.checkedSize leading.val elem_size.val leaf_align.val elems.val | ||
| /// ``` | ||
| #[allow(clippy::arithmetic_side_effects, clippy::indexing_slicing)] | ||
| pub(super) fn size_for_metadata( |
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The native comparison never calls this newly verified function: both test_model_via_dst_layout* tests still obtain their expected values from size_for_metadata_model, which shares only the two round_up calls, and a repo-wide Rust search finds nested_reference::size_for_metadata only at this definition. Consequently, a defect or later drift in recursive layer traversal or composition can pass every DstLayout comparison while the Lean proof covers a different, dead implementation; construct expected values with this function or directly compare the two oracles.
AGENTS.md reference: zerocopy/AGENTS.md:L58-L59
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The nested-layout regression reference used the production padding helper, so an error shared by both calculations could evade comparison. Replace that rounding with independent remainder-based checked arithmetic. Add a recursive Rust reference over record-layer descriptors and prove its complete optional result against the unbounded semantics for arbitrary depth and metadata. Preserve inner field padding under packing and cover invalid descriptors, overflow and zero-sized elements. Arithmetic descriptors need not correspond to realizable Rust types. gherrit-pr-id: Gdb6nhuavogydrpjnu6lnfrefglg42v4c Agent-authored-by: AI agent acting on joshlf's behalf
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The nested-layout regression reference used the production padding helper,
so an error shared by both calculations could evade comparison. Replace
that rounding with independent remainder-based checked arithmetic.
Add a recursive Rust reference over record-layer descriptors and prove its
complete optional result against the unbounded semantics for arbitrary
depth and metadata. Preserve inner field padding under packing and cover
invalid descriptors, overflow and zero-sized elements. Arithmetic
descriptors need not correspond to realizable Rust types.
Authored by an AI agent acting on joshlf's behalf.
Latest Update: v31 — Compare vs v30
📚 Full Patch History
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git fetch origin refs/heads/Gdb6nhuavogydrpjnu6lnfrefglg42v4c && git checkout -b pr-Gdb6nhuavogydrpjnu6lnfrefglg42v4c FETCH_HEADCheckout
git fetch origin refs/heads/Gdb6nhuavogydrpjnu6lnfrefglg42v4c && git checkout FETCH_HEADCherry Pick
git fetch origin refs/heads/Gdb6nhuavogydrpjnu6lnfrefglg42v4c && git cherry-pick FETCH_HEADPull
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