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

libs/libcmt/heapinit.obj exact-match ledger

This atomic lane treats prior commit 19506a93 only as an untrusted readable-C proposal. It screened the parked ledger, active ownership, historical refs, and canonical configuration before copying the proposal into a fresh worktree from the authoritative campaign tip. All proof is regenerated from the January object and a new XDK build.

Plain-English behavior

This tiny CRT object does two things. __heap_select(void) returns one, which selects the normal heap implementation. The initialized global _amblksiz stores the CRT allocation-block size, 16 bytes.

January target inventory

• One four-byte cdecl function
• One four-byte initialized writable data section
• No relocations

The function should compile as xor eax,eax; inc eax; ret. The data payload should be the little-endian bytes 10 00 00 00. Admission requires more than those bytes: the symbol storage, section ownership, flags, and offset must also match the January object.

Experiment record

ID	Readable C shape	Result
E01	return 1; plus externally linked _amblksiz = 16	Candidate under fresh strict validation

No alternative spelling is justified unless E01 fails a measured target property.

Strict verification

• XDK 3911 CL.Exe 13.00.9254.1 rebuilt the source with the generated /O1 /Gy /I"xbox/include" flags.
• Function size: 4/4; relocations: 0/0; normalized SHA-256: 194f81a127723ec366ff0b8410df190c0649a05808a94d5554d82de5af7f425b.
• Data size: 4/4; relocations: 0/0; normalized SHA-256: 097328e8c957de2428283954f6a1ee8ff7ad7def12e100a600178407f5decf24.
• The target and candidate external-runtime symbol inventories match exactly: ___heap_select is an external function at offset zero in .text, and __amblksiz is external data at offset zero in writable .data. Symbol type, storage class, section flags, and section ownership all match.
• Neither object owns another runtime section, and neither has a relocation.

Current-campaign admission gates

• Full halobetacache_build and libcmt_build: passed.
• semantic_progress: passed with zero unit errors.
• progress: credits the complete object, its four code bytes, and its four initialized data bytes. Global totals are omitted because concurrent atomic admissions make them stale without changing this proof.
• The semantic audit records ___heap_select with both objdiff and semantic-coff proof. The admission audit reports no heapinit contradiction, revocation, or unreviewed candidate.
• The clean-commit whole-object regression snapshot/check is run before handoff and must preserve both the exact function and complete data/symbol ownership without warning.
• python -m unittest discover -s tools -p 'test_*.py': 179/179 passed.

No old object file is accepted as proof.

House/Berth, readability, and bug audit

The no-argument prototype uses explicit (void), and the function has one explicit return. The global is named and typed; there are no magic offsets, tag accesses, or datum accesses. The value 16 is the recovered CRT block-size configuration and is documented here rather than hidden behind a speculative enum.

No assembly, volatile, forced inlining, undefined behavior, byte patch, alignment directive, optimization pragma, raw structure offset, comparator exception, or codegen-only cast is used. No original January bug was found, so no bug-preservation comment is required.