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

libcmt/new.obj exact-match ledger

Target inventory

• January object: libs/libcmt/new.obj
• Function: ??2@YAPAXI@Z (void *__cdecl operator new(unsigned int))
• Padded code size: 0xE (14 bytes)
• Relocations: one IMAGE_REL_I386_REL32 at +0x7, targeting __nh_malloc
• Owned data: none

The target pushes the allocation mode 1, forwards the size argument to _nh_malloc, discards the two stack arguments, and returns its result.

Source and build shape under test

The implementation is the ordinary readable C++ allocation wrapper. The repository path remains libs/libcmt/new.c; object-specific /TP compiles it as C++, while the libcmt project retains its original /O1 /Gy flags. _nh_malloc has explicit C linkage so its COFF destination remains the CRT symbol __nh_malloc rather than a C++-mangled name.

No assembly, volatile forcing, undefined behavior, byte patching, compiler substitution, or comparator exception is used.

Verification

The first source shape passed the hardened comparator without adjustment:

• size: 14/14
• relocations: 1/1
• normalized SHA-256, both sides: f936ff6b84ea25652eff3ee78740def510e3767ede1a6483f6e65df32b6412e1
• relocation identity: +0x7, IMAGE_REL_I386_REL32, __nh_malloc + 0
• owned data in the target: none
• section_infos_equal: true

The candidate's .drectve and debug sections are ordinary compiler-generated metadata and do not represent target-owned CRT data. The sole target COMDAT is strict exact, so the object is safe to mark Matching.

Current-campaign independent revalidation

The older completed result was treated only as a source lead. It was transplanted onto campaign tip 95908c0f, configured from scratch, and rebuilt with the local XDK 3911 compiler before any admission decision. The fresh object reproduced every measurement above. A whole-object inventory also proved that the only meaningful target section is the 14-byte .text COMDAT; both objects expose ??2@YAPAXI@Z at offset zero with function type 0x20 and external storage class 2. Neither target nor candidate owns .rdata, .data, or .bss.

The full Halo and libcmt builds passed, semantic progress reported zero unit errors, the clean per-unit regression snapshot/check retained the function as still_exact, and all 179 project tool tests passed.

House/Berth audit

• The body is readable C++ and expresses the real allocator contract directly.
• /TP is not a codegen trick: it is required to compile this .c-named file as C++ and produce the January operator-new symbol. The optimization flags remain libcmt's unchanged /O1 /Gy.
• The _nh_malloc declaration uses explicit C linkage because that is the target's proven external ABI.
• The direct return is the natural tail-wrapper shape measured in January; an artificial result local would obscure the source and change codegen.
• There is no assembly, volatile, undefined behavior, forced inlining, byte patching, magic layout, alignment directive, flag substitution, or comparator exception.