a955dd6b18
## P1-1/P1-2: TypeFacts 優先化 - binop.py: operand facts が dst_type ヒントより優先 - mir_json_emit.rs: Unknown 時に dst_type を出さない - function_lower.py: value_types を metadata から読み込み ## P2: handle concat 統一（根治） - print シグネチャ修正: i64(i64) → void(i8*) - Mixed concat を handle ベースに統一: - concat_si/concat_is → concat_hh - box.from_i64 で integer を handle 化 - Everything is Box 哲学に統一 - legacy 関数は互換性のために保持 ## 結果 - ✅ print("Result: " + 3) → Result: 3 - ✅ segfault 解消 - ✅ Everything is Box 統一 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Investigations Folder
This folder contains investigation notes and analysis for debugging sessions.
Active Investigations
Phase 131-12: LLVM Wrong Result (Case C)
Status: ✅ Root cause identified Problem: LLVM backend returns wrong results for loop exit values Root Cause: vmap object identity mismatch between Pass A and Pass C
Key Documents:
- phase131-12-case-c-llvm-wrong-result.md - Initial investigation scope
- phase131-12-p1-vmap-identity-analysis.md - Detailed trace analysis
- phase131-12-p1-trace-summary.md - Executive summary with fix recommendations
Quick Summary:
- Bug: Pass A deletes
_current_vmapbefore Pass C runs - Impact: Terminators use wrong vmap object, missing all Pass A writes
- Fix: Store vmap_cur in deferred_terminators tuple (Option 3)
Next Steps:
- Implement Option 3 fix in block_lower.py
- Add Fail-Fast check in instruction_lower.py
- Verify with NYASH_LLVM_VMAP_TRACE=1
- Run full test suite
Trace Environment Variables
Phase 131-12-P1 Traces
NYASH_LLVM_VMAP_TRACE=1 # Object identity and vmap keys tracing
NYASH_LLVM_USE_HARNESS=1 # Enable llvmlite harness
NYASH_LLVM_DUMP_IR=<path> # Save LLVM IR to file
Investigation Workflow
- Scope - Define problem and test case (phase131-12-case-c-*.md)
- Trace - Add instrumentation and collect data (phase131-12-p1-vmap-identity-*.md)
- Analysis - Identify root cause with evidence (phase131-12-p1-trace-summary.md)
- Fix - Implement solution with validation
- Document - Update investigation notes with results
Archive
Completed investigations are kept for reference and pattern recognition.