Census-driven cut of the top-ranked post-R7a lever. All passes TS-side,
C-only (preParseCSource), shared by both arms:
- parameterized-annotation whole-blank (__free/__printf/__counted_by/
__bpf_md_ptr…; extends through a stranded field `;`)
- type-keyword-arg scanner (kzalloc_obj(struct T), list_entry, multi-line
continuations behind nested-paren args; bounded hand scanner, head
exclusions + call-vs-declaration guard; blanks trailing stars)
- static/extern CAPS-macro declaration lines at any scope; the initialized
form is REWRITTEN to its expansion (name/tail keep exact offsets)
- va_arg qualified-type blank; GNU named-variadic #define dots-only blank
(post-restore); sandwiched notrace-family; C23 auto; multi-line
iterator-macro spans (hlist_for_each_entry_rcu + lockdep arg)
- word list += cacheline family (2- and 4-underscore spellings) + 10 more
census-confirmed annotations
Gates: five-repo parity sweeps 0 diffs (git deferral 16.1→12.2%, redis
25.3→24.1%, fmt/protobuf unchanged); linux full-tree both arms
2,049,153 nodes / 6,413,518 edges (+858/+6,585 vs R7a) with byte-identical
dumps (10,446,478 lines, sha256 6dd1185b); kernel-arm parse-loop 356→306s
at 2c; suite 2517 green under CODEGRAPH_KERNEL_EXPECT=1. Honesty note
recorded in the docs: error recovery was already salvaging most SYMBOLS on
deferred files — the graph win is relationships + phantom cleanup, and the
unreleased CHANGELOG entry was rewritten off the sweep-subset framing.
Also records §7a.5: post-R7a 8-core cg1212 re-run 16.4min (was 18.3min);
8c parse sits on the single-writer floor, so the <10min-on-8c gap re-ranks
to the per-ref resolution path.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Parity: 0 diffs on redis/git/fmt/protobuf/ALS sweeps; full-init dumps
byte-identical on all five + linux at kernel scale (10.4M dump lines,
same sha256 both arms). Linux 2c/6GB envelope: kernel-arm 19.1min vs
wasm-arm 22.9min (parse 356s vs 435s) on a much richer graph (the new
blanks recover error-swallowed code: git 2x nodes, linux kernel/+mm/ 3x).
Deferral guard corrected by measurement (C/C++ error incidence 9-42%;
--max-deferral flag); defer-reuse memo kills the 3x re-blank/re-parse
cost deferred files paid.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
tree-sitter-wasms shipped 2023-era C/C++ grammars; the kernel walker must
compile the crates.io versions, so production wasm upgrades FIRST and in
isolation (the R2 pattern). Built with tree-sitter-cli 0.25.10 from each
tag's CHECKED-IN parser.c: tree-sitter-c v0.24.2 (b780e47, parser.c
f2883ff9), tree-sitter-cpp v0.23.4 (f41e1a0, parser.c 2a35a43b, scanner.c
cf60387d) — sha-matched against the crates.io tarballs. .metal/.cu map to
language 'cpp' so the dialects ride the same coherent grammar.
Full suite green with the upgraded grammars (2,490; one unrelated daemon
idle-timeout flake passed solo 9/9) — incl. the UE-macro, misparse-guard,
Metal, and CUDA coverage. Checklist updated with the vendored revs and the
metal/cuda routing correction.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Step 1 of the §0a recipe for the C/C++ port: every tree-sitter.ts branch,
extractor-config field, name-salvage helper, and gate the walker must
mirror, with file:line anchors. Locks the architecture: preParse (all seven
blanking passes) hoists to the kernel route point so none of it ports to
Rust; Metal/CUDA stay on wasm this round; one dual-language walker module.
Key asymmetries surveyed: value-refs are C-only (cpp absent from
VALUE_REF_LANGS), static-member refs are cpp-only, fn-ref spec is
cFamilySpec with addressOfOnly for cpp.
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
