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

wcstok.obj exact-match log

Plain-English behavior

This legacy two-argument CRT tokenizer separates a writable UTF-16 string into tokens. It skips delimiter characters, replaces the delimiter following the next token with a zero terminator, and remembers the continuation pointer in the current thread's CRT state. A later call with a null string resumes from that saved pointer.

Screening and provenance

At authoritative campaign tip 114ad5d0, libs/libcmt/wcstok.c was marked MISSING and had no parked-ledger entry. No active lane owned this file. Completed local commits 0f25ef8c and 235bfb83 contained the same proposed source, but that source was treated only as an untrusted reconstruction hypothesis. This lane independently extracted the January object, rebuilt the candidate, and rechecked every runtime-owned section and symbol.

January target inventory

• Toolchain flags are the repository's unchanged libcmt flags: /O1 /Gy.
• The target owns one 165-byte .text COMDAT and no .rdata, .data, or .bss.
• _wcstok is the only defined function and has external COFF ownership.
• The only relocation is IMAGE_REL_I386_REL32 at offset 0x08, targeting __getptd with addend zero.
• The target accesses the saved wide-token pointer at thread-data offset 0x1C. The source models the complete named CRT prefix through that field; it does not use raw offsets or padding blobs.

Source-shape evidence

The January control flow contains two delimiter scans. The first advances past leading delimiters. The second advances through the token, writes a UTF-16 terminator when it reaches a delimiter, and updates the thread continuation pointer on every exit. The single final conditional expression returns null for an empty token and the token start otherwise.

ID	Shape	Result
E01	Named thread-data prefix, two explicit delimiter scans, one final return	Accepted: strict-exact

The rebuilt candidate is 165/165 bytes with 1/1 relocation. Its normalized SHA-256 is e90fd8ec6f954d2ae6e44020a5f43155313066ead56fc4d58118b70862ee54df, identical to January. The strict comparator resolves the relocation to __getptd+0, not merely to an arbitrary call site.

House/Berth and safety audit

Every parameter is on its own line, the no-argument _getptd declaration has void on its own line, and the function has one explicit final return. The source uses no assembly, volatile, forced inlining, undefined behavior, byte-forcing cast, magic offset, alignment directive, compiler-flag change, or comparator exception. No original bug has been identified that needs a preservation/fix comment.

Final admission gates

• The lane was rebased onto authoritative campaign tip 7d2d26ea; the config merge retained the already-admitted wcsstr result as well as this new wcstok result.
• Forced XDK rebuild and hardened whole-object/ownership audit: passed.
• Full Halo and libcmt builds: passed.
• Semantic progress: 3,452 functions evaluated, 3,368 accepted exact, zero unit errors.
• Ordinary progress credits the object; the final observed aggregate was 281/833 objects, with libcmt at 14/212 objects and 15/476 functions.
• Admission audit: no wcstok contradiction or revocation.
• Fail-closed regression manifest/check: _wcstok remains exact with no failures or warnings.
• Tool tests: all 177 passed.
• git diff --check: passed.

Nothing is pushed and the canonical worktree is untouched.