tomoaki
ab76e39036
A1.4: Add sugar syntax `public weak parent` ≡ `public { weak parent }`
A1.5: Fix parser hang on unsupported `param: Type` syntax
Key changes:
- A1.4: Extend visibility parser to handle weak modifier (fields.rs)
- A1.5: Shared helper `parse_param_name_list()` with progress-zero detection
- A1.5: Fix 6 vulnerable parameter parsing loops (methods, constructors, functions)
- Tests: Sugar syntax (OK/NG), parser hang (timeout-based)
- Docs: lifecycle.md, EBNF.md, phase-285a1-boxification.md
Additional changes:
- weak() builtin implementation (handlers/weak.rs)
- Leak tracking improvements (leak_tracker.rs)
- Documentation updates (lifecycle, types, memory-finalization, etc.)
🤖 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.
JoinIR Generalization Study (Historical)
joinir-generalization-study.md（Phase 131–138 の状況と一般化案の相談用コンテキスト。SSOT は design/ を参照）