CobaltC 1.0.0规范发布 欲成C语言继任者

CobaltC编程语言设计团队发布了CobaltC 1.0.0规范，这是一套新的静态类型系统编程语言规范，设计已冻结1。该语言提供显式所有权、确定性销毁、编译器检查的借用、推断生命周期、显式可空性和边界安全等核心特性1，旨在实现强内存安全和可预测的资源管理，不依赖垃圾回收1。

CobaltC采用明确的所有权模型，由一个所有者负责最终销毁资源，或通过类型显式实现共享所有权1。其借用规则的核心为：零个或多个兼容的共享借用，或一个可变借用1。规范还包含结构化错误处理、安全并发、显式unsafe操作和显式FFI等特性1，并定义了Core Conformance、Standard Conformance和Platform Conformance三个一致性级别1。

根据规范的最终安全定理，符合规范的安全代码执行不会导致use-before-initialization、use-after-move、double ownership、invalid borrow lifetime、conflicting mutable aliasing、unchecked nullable dereference、unchecked out-of-bounds access或unsynchronized data races等问题1。

CobaltC, a new statically-typed programming language specification, has reached version 1.0.0 with its design frozen at final status 1. The language introduces a comprehensive set of memory safety and resource management features, including explicit ownership, deterministic destruction, compiler-checked borrowing, inferred lifetimes, explicit nullability, and bounds-safe operations 1. Unlike traditional approaches, CobaltC achieves strong memory safety and predictable resource management without relying on garbage collection 1.

The language specification defines a rigorous ownership and borrowing system designed to prevent common memory errors 1. The core ownership model assigns a single owner responsible for final destruction, with explicit provisions for types that implement shared ownership 1. The borrowing rules enforce either zero or multiple compatible shared borrows, or a single mutable borrow—preventing data races and conflicting access patterns 1. According to the specification's final safety theorem, any conforming safe code is guaranteed to execute without use-before-initialization, use-after-move, double ownership, invalid borrow lifetime, conflicting mutable aliasing, unchecked nullable dereference, unchecked out-of-bounds access, or unsynchronized data races 1.

The specification establishes three conformance levels—Core Conformance, Standard Conformance, and Platform Conformance—to accommodate varying implementation requirements 1. Beyond memory safety, CobaltC includes structured error handling, safe concurrency mechanisms, explicit unsafe operations for low-level code, and explicit foreign function interface (FFI) support 1.