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nyash-codex c8bbe389da test(compiler): add Stage-B minimal SSA test harness 
**Goal**: Create 100-line minimal test case to reproduce SSA/ValueId
bugs in Stage-B compilation without the complexity of full compiler_stageb.hako.

**Files added**:

1. **lang/src/compiler/tests/stageb_min_sample.hako** (65 lines)
   - Pattern 1: Method call in if-block before loop (TestArgs.process)
   - Pattern 2: Simple method calls without loops (TestSimple.run)
   - Pattern 3: Nested if/loop with method calls (TestNested.complex)
   - All patterns reproduce ValueId SSA bugs

2. **tools/test_stageb_min.sh** (executable test script)
   - Test 1: Direct VM execution
   - Test 2: Stage-B compilation pipeline
   - Test 3: MIR verification

**Test results** (as of commit):

Test 1 (Direct VM):
```
❌ ValueId(14) error in TestArgs.process/1
   (different from ValueId(17) in Stage-B!)
```

Test 2 (Stage-B):
```
❌ ValueId(17) error in StageBArgsBox.resolve_src/1
   (expected, same as full compiler_stageb.hako)
```

Test 3 (MIR verification):
```
✅ No verification errors
   (verifier doesn't catch these specific SSA bugs)
```

**Findings**:
- Multiple ValueId SSA bugs exist (14, 17, etc.)
- MIR verifier needs enhancement to catch receiver use-before-def
- Minimal harness successfully reproduces issues for easier debugging

**Next steps** (not in this commit):
- Fix ValueId(14) in TestArgs.process
- Fix ValueId(17) in StageBArgsBox.resolve_src
- Enhance MIR verifier to catch Method receiver SSA bugs

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-17 04:29:10 +09:00
..
build
restore(lang): full lang tree from ff3ef452 (306 files) — compiler, vm, shared, runner, c-abi, etc.\n\n- Restores lang/ directory (files≈306, dirs≈64) as per historical branch with selfhost sources\n- Keeps our recent parser index changes in compiler/* (merged clean by checkout)\n- Unblocks selfhost development and documentation references
2025-10-31 20:45:46 +09:00
c-abi
Phase 21.2 Complete: VM Adapter正規実装 + devブリッジ完全撤去
2025-11-07 19:32:44 +09:00
src
test(compiler): add Stage-B minimal SSA test harness
2025-11-17 04:29:10 +09:00
.gitignore
restore(lang): full lang tree from ff3ef452 (306 files) — compiler, vm, shared, runner, c-abi, etc.\n\n- Restores lang/ directory (files≈306, dirs≈64) as per historical branch with selfhost sources\n- Keeps our recent parser index changes in compiler/* (merged clean by checkout)\n- Unblocks selfhost development and documentation references
2025-10-31 20:45:46 +09:00
README.md
Phase 25.1a: selfhost builder hotfix (fn rename, docs)
2025-11-15 05:42:32 +09:00

README.md

Hakorune Lang Line — Rust-less Kernel (C ABI)

Scope

  • This lang/ tree hosts the script-driven C ABI kernel artifacts for Phase 20.9+.
  • Goal: keep the runtime data plane callable without Rust on the hot path (Hakorune → LLVM → C ABI).

Principles

  • Separation: do not mix Rust crates or cargo-specific layout under this tree.
  • Ownership & ABI:
    • Any char* returned across the ABI is owned by the callee and must be freed via hako_mem_free().
    • Do not mix CRT free() across boundaries.
  • Fail‑Fast: no silent fallbacks. Missing symbols must be observable via short diagnostics.

Layout (initial)

  • c-abi/ — C shim(s) and headers for the minimal kernel surface
    • README.md — responsibilities, build notes, platform caveats
    • include/ — public headers (mirrored or thin wrappers)
    • shims/ — libc-backed shim(s) for canaries and local testing

Build & Link (dev)

  • C shim: build a shared library to satisfy symbols for the LLVM line canaries.
  • Link flags example:
    • Linux: -L$(pwd)/target/release -Wl,-rpath,$(pwd)/target/release -lhako_kernel_shim

Non‑Goals

  • Plugin loader, HostBridge router, Box/Type system — kept in Rust.

Selfhost Launcher (AOT)

Dev line (Stage1 core – experimental)

  • Dev build: tools/selfhost/build_stage1.sh → produces target/selfhost/hakorune
  • Role:
    • Fast iteration用の Stage1 selfhost バイナリ（Ny Executor / CLI 実験など）。
    • new CLI/runner 機能はまずこちらで開発・検証する。

Stable line (lang bin – snapshot)

  • Stable binary: lang/bin/hakorune
  • Build (pure-lang launcher, legacy bring-up):
    • lang/build/build_runner.sh → produces lang/bin/hakorune
    • Requirements: LLVM 18 dev (llvm-config-18)
  • Policy（Phase 25.1 以降の想定）:
    • target/selfhost/hakorune で十分に安定したら、その成果物を lang/bin/hakorune に昇格させる（手動コピー or 専用スクリプト）。
    • lang/bin/hakorune は「last known good」の Stage1 コア EXE として扱い、配布や外部からの参照時は原則こちらを基準にする。

Notes

  • lang/ 以下は「最終的に 1 つの Stage1 コア EXE（hakorune）を構成するソース群」という前提で整理する。
  • target/selfhost/hakorune は開発中の最新版、lang/bin/hakorune は安定版スナップショットという役割分担にする。