Release Notes
v0.3.0 (2026-06-07)
New Features
Lightweight Owner System
- Compile-time ownership and borrow checking
- Ownership transfer for non-Copy values
- Exclusive mutable references and shared immutable references
- Use-after-move detection
- Dangling local reference detection
- Copy type inference (heuristic)
- Statement-scoped temporary borrows
New Reference Syntax: ref and mut ref
ref valuecreates immutable shared borrowmut ref valuecreates mutable exclusive borrow- Multiple immutable borrows allowed per statement
- Mutable borrow must be exclusive
- Temporary borrows released at end of statement
Type System Enhancements
usizeis now a recognized type keyword- Unit type
() - Prefix logical NOT operator
! - Leading
|in enum definitions
Match Enhancements
- Call expression scrutinees:
match choose(1) { ... } - Single-line match arms:
Some(v) -> print(v)
Other
- Compound assignment on general lvalues
- Multi-object file linking:
vixc a.o b.o -o prog - String concatenation null-pointer safety
- Global dynamic array
pushwriteback fix
Internal Changes
- New
src/Ownership/Ownership.cpp - New
include/ownership.h - Pipeline: Type Check → Ownership Check → CodeGen
- Old
&syntax replaced byref/mut ref
Compatibility
Not included: lifetime annotations, full NLL, Pin/Unpin, Drop, self-referential structs.
v0.2.0 - v0.2.10 Summary
| Version | Date | Highlights |
|---|---|---|
| v0.2.10 | 2026-06-06 | Multi-object linking, leading | in enums |
| v0.2.9 | 2026-05-31 | Array parameter warnings, for-loop numeric promotion |
| v0.2.8 | 2026-05-31 | Match call expressions, vixc0 prototype |
| v0.2.6 | 2026-05-30 | Reference param fixes, variable shadowing, empty arrays |
| v0.2.5 | 2026-05-30 | ! operator, () unit type, syntax deprecation warnings |
| v0.2.1 | 2026-05-15 | str removed, usize added |
| v0.2.0 | 2026-05-15 | Removed global/const, immutable by default, explicit main |