Cesarus85--mjolnir-vr/docs/object_matching_logs/geometry_obj_codex_checkpoint.md

geometry.obj Codex checkpoint

Scope and provenance

• Unit: source/math/geometry.c (config.json index 228).
• Baseline: local integration commit 29cb25c58e3dfc71c94dd7392582020bd48893ba.
• Compiler: XDK 3911 VC7, /O2 /Oy- /DDEBUG /Dxbox.
• This checkpoint reconstructs only geosphere_dispose. The object remains NonMatching; no completion label or semantic exception was added.
• The local geometry branch census found no later retained implementation: codex/geometry-consolidation and codex/geometry-leaves-2 have the same geometry.c blob as the baseline (2a785bfe128bf2d343fe3d6dd37e3b1433c0639b).

The implementation was reconstructed from independent evidence rather than copied from another project:

• January target code proves three assertions at original source lines 117-119, structure pointer members at offsets +4 and +8, and three debug_free calls at lines 121-123.
• The HCEA corpus at local commit c89106c4964f2df3a98ef7b4035d6750372797cd independently identifies the 20-byte geosphere layout and the field types used here.
• Aerocatia/demon commit ef8cbebd2d122b8876c9ad4c14e5503afb8b7c7e corroborates the lifecycle and field names. Its GPL source was used only as semantic/provenance evidence; the retained January/XDK implementation was derived and measured locally.

Retained exact result

_geosphere_dispose is strict COFF exact:

Evidence	Target	Candidate
Padded code bytes	176	176
Relocations	18	18
Normalized SHA-256	6b0637bddb65eb86f4cfe62570afd1ffdc97f2b32047e0357830c24f6f5b2a21	same

All relocation addresses, types, and resolved destinations match, including three display_assert calls, three system_exit calls, three debug_free calls, and the owned string references.

The four newly emitted target-owned string COMDATs are also individually strict-exact with the same storage ownership and no relocations:

String owner	Bytes	Normalized SHA-256
c:\\halo\\SOURCE\\math\\geometry.c	31	9902ce6c2f89e7074183b977711ad9b927c2c21b478d0d48c6417bc35c191f57
sphere	7	d0ccc00760247969431f806b9272e52d33469482d6cf320749a500868c43baeb
sphere->vertices	17	24198c7e7221f64fcf63338a8cec0e3f9b85c7fda066698660ce07b1cf76aa13
sphere->triangle_strip_vertex_indices	38	e99f33428465d15032cf3949a71895b9570ab13f88ce9242dbb6df9736de379c

The function is intentionally placed after the existing reconstructed bodies. Because code is function COMDAT-backed, this does not alter its exact bytes, but it preserves the pre-existing constant-COMDAT and symbol-evidence order.

Measured progress and regression evidence

• Geometry moves from 6/30 to 7/30 exact functions.
• Exact logical code moves from 303/12,751 to 466/12,751 bytes: +1 function and +163 bytes.
• All six baseline-exact functions remain strict-exact. No previously non-exact function changes after the source-order correction.
• The pre-edit fail-closed manifest reports only the intentional four new string COMDATs and corresponding symbol-set addition, plus NEWLY_EXACT:_geosphere_dispose; it reports all six prior functions as still_exact and changed_nonexact: [].
• A clean-commit post-gain snapshot/check freezes the enlarged ownership surface because the regression gate deliberately cannot waive ordinary data or symbol additions. After forced deletion and rebuild of geometry.obj, the replay passes with zero failures, zero warnings, zero changed non-exact functions, and all seven exact functions reported as still_exact.

Repository gates

• Full all_source build: pass (569 candidate objects).
• Strict semantic audit: 470 units scanned, 3,668 functions evaluated, 3,522 semantic exact, 93 hidden exact / 55,677 bytes, 3,604 accepted exact, zero unit errors.
• Admission audit: zero candidates, zero revocations; only the inherited source/shell/shell_xbox contradiction remains.
• Parked-function audit: 4 active, 0 stale, 0 invalid.
• Complete tooling suite: 179/179 tests passed.
• Object status remains NonMatching.