writeonce/tests/corpus/README.md
shoney.arickathil 79605cbb4f feat: milestone 1 complete — .wob emitter, conformance corpus, single binary; GC redesign specced
- `woc` now emits `.wob` that `wovm` runs: emit.ml lowers the typed,
  owner-annotated AST (scope-stack registers with a >64 WO-E401 diagnostic,
  Lua-style call windows, ICALL by slot, dedup const pool, drop maps, line
  tables, implicit terminators); disasm.ml backs `--dump-bc` goldens.
- Ownership lowering consumes the four owner tables verbatim; RESIDUAL is the
  only source of borrow ops, coalesced per operand. Review caught the emitter
  consuming only 2 of owner.ml's 4 residual producers — an assignment-anchored
  aliasing violation ran to exit 0 instead of trapping; fixed, plus a backstop
  raising WO-E404 for any residual region left unconsumed.
- Conformance harness `scripts/oop-e2e.sh` (`just oop-e2e`): four fixture
  kinds with exact outcomes — byte-exact stdout, one WO-E### anchored on
  `error CODE:`, numeric trap code, gc trace. 25 fixtures incl. pricing-demo
  logic, the ownership suite, and DB_STUB's parse-but-trap. `tests/` un-ignored
  so the corpus is actually tracked.
- `woc build` produces a self-contained binary: wovm copy + appended image +
  20-byte trailer, self-exec via /proc/self/exe. Verified relocated outside
  the repo, argless, and against adversarial trailer corruption.
- Milestone 1's five spec criteria all MET (`just oop-accept`). Criterion 3
  closed by WO-E405 — the entry must return `Int`, since program mode already
  says its return value is the exit code — which deletes the leak class
  without adding return-type metadata to the format. `gc/held-cycle` retired:
  an externally-held cycle is not expressible in a post-exit pump.
- New spec: inferred GC + incremental per-shard tri-color mark-sweep, retiring
  `@gc` and reference counting. Story gains iterations 7b (that work) and 9b
  (`@table`, relations, compiler-checked query); `.dev/reference` gains a
  sparse System.Linq checkout. Priority: 5→6→7 (log-watcher) then 7b, 8, 9, 9b.
2026-08-11 19:31:26 +02:00

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# tests/corpus/ — the conformance spine
Fixture kinds, exact-outcome matching (byte-equal stdout / exact `WO-E###` / exact trap code / exact gc step+freed counts):
| dir | kind | landed by plan |
| --- | --- | --- |
| `run/` | compiles + runs, expected stdout | 3 |
| `compile-fail/` | must fail with expected `WO-E###` | 3–4 |
| `trap/` | must trap with expected code | 3–4 |
| `gc/` | cycle collection scenarios | 3 |
| `actor/` | shard/spawn/send (ASan+TSan) | 4 |
| `db/` | insert/select + crash/replay | 5 |
| `lang/` | Haxe-parity adoptions | 8 |
| `sys/` | fs/proc/net/time/json stdlib | 9 |
| `sample-logwatcher/` | ported log-watcher fixtures | 10 |
Runner: `scripts/oop-e2e.sh` (plan 3, task 2 — includes the how-to-add-a-fixture doc pointer `docs/plan/oop-vm/02-corpus.md`).