cyclone
zz
cyclone | zz | |
---|---|---|
7 | 10 | |
1 | 1,604 | |
- | - | |
10.0 | 1.9 | |
about 10 years ago | almost 2 years ago | |
C | Rust | |
GNU General Public License v3.0 only | MIT License |
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cyclone
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Maestro: A Linux-compatible kernel in Rust
One of the inspirations for Rust, as I recall, was Cyclone: https://cyclone.thelanguage.org/
Which was/is a "safe" dialect of C; basically C extended with a bunch of the stuff that made it into Rust (algebraic datatypes, pattern matching, etc.) Though its model of safety is not the borrow checker model that Rust has.
Always felt to me like something like Cyclone would be the natural direction for OS development to head in, as it fits better with existing codebases and skillsets.
In any case, I'm happy to see this stuff happening in Rust.
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C for All
It sounds like they re-invented Cyclone.
https://cyclone.thelanguage.org
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Is it possible to have a superset of the C programming languages standard that is as safe as Rust?
Looks like it was a research project and is now abandoned: http://cyclone.thelanguage.org
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Need to learn FAST... Any recommendations for a free interactive rust course?
The borrow checker is Rust's secret sauce. It's the one thing no other language has. (Except Cyclone I think, which is an unmaintained research language.)
- What do you think about a C transpiler?
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Is my method of programming wrong?
Also, lifetimes are not the mechanism by which Rust ensures safety - it's a necessary side-effect of the approach that Rust has taken, and this has nothing to do with the issues that "plague" other languages. Region-based memory management techniques are neither new nor really innovative. https://cyclone.thelanguage.org/, which directly inspired Rust, had them, and the authors gave up working on it because the ergonomics were terrible, as is the case with Rust. Lifetimes are needed for the Rust compiler to reason about what it can reasonably allow at compile time, but it, along with the Borrow Checker (which provides the actual safety net) ensures that whole swathes of valid programs are disallowed because the Rust compiler is not smart enough (and probably never will be) to check that these programs are valid.
- A Formal Model of Checked C
zz
- A "logical" compiler
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Is it possible to have a superset of the C programming languages standard that is as safe as Rust?
There is this: https://github.com/zetzit/zz
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ISO C became unusable for operating systems development
You're right that you can't define a safe subset of C without making it practical. MISRA C defines a C subset intended to help avoid C's footguns, but it still isn't actually a safe language. There are alternative approaches though:
1. Compile a safe language to C (whether a new language or an existing one)
2. Formal analysis of C, or of some practical subset of C, to prove the absence of undefined behaviour
Work has been done on both approaches.
ZZ compiles to C. [0] Dafny can compile to C++, but it seems that's not its primary target. [1][2]
There are several projects on formal analysis of C. [3][4][5][6]
[0] https://github.com/zetzit/zz
[1] https://github.com/dafny-lang/dafny
[2] https://dafny-lang.github.io/dafny/
[3] https://frama-c.com/
[4] https://www.microsoft.com/en-us/research/project/vcc-a-verif...
[5] https://www.eschertech.com/products/ecv.php
[6] https://trust-in-soft.com/
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Foundations of Dawn: The Untyped Concatenative Calculus
Formal methods have been used successfully for decades; it's not just a pipe dream. Perfect software should ideally be something like ultra-low-defect software, though (that's the term the AdaCore folks use).
There are also other projects that aim to make formal software development much easier [0][1] and of course there's SPARK Ada.
[0] https://github.com/zetzit/zz
[1] https://github.com/dafny-lang/dafny
- ZetZ: A zymbolic verifier and tranzpiler to bare metal C Resources
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Programming in Z3 by learning to think like a compiler
This post reminds me that I've been wanting to try out ZetZ[0]. It incorporates Z3 into a high-level programming language, and seems to do a lot of what the post talks about automatically.
[0] https://github.com/zetzit/zz
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Grids in Rust, part 2: const generics
I still want to try the ZZ language (https://github.com/zetzit/zz) someday. It compiles to C, and uses a SMT solver to prove that you don't index out-of-bounds at compile time. But I don't like how it lacks generics, uses C idioms, and compiles to C.
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Another technique to manage memory
The zz language uses a SMT solver to check for program soundness... I haven't tried it, but that's got to be more flexible and resource-hungry.
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We are building a new systems programming language
Especially the fact that it outputs C code. So interop is seamless.
https://github.com/zetzit/zz
For any systems language, interop with C is the litmus test.
With that in mind, this new language should not require 15,000 lines of standard library. A type-safe wrapper for libc should be enough...
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Does such a language already exist ("Rust--")?
You might find ZetZ interesting!
What are some alternatives?
cyclonic - WIP port of cyclone to modern platforms
TinyGo - Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
cedro - C programming language extension: Cedro pre-processor
checkedc - Checked C is an extension to C that lets programmers write C code that is guaranteed by the compiler to be type-safe. The goal is to let people easily make their existing C code type-safe and eliminate entire classes of errors. Checked C does not address use-after-free errors. This repo has a wiki for Checked C, sample code, the specification, and test code.
cake - Cake a C23 front end and transpiler written in C
angr - A powerful and user-friendly binary analysis platform!
cyclone
CrossHair - An analysis tool for Python that blurs the line between testing and type systems.
BorrowScript - TypeScript with a Borrow Checker. Multi-threaded, Tiny binaries. No GC. Easy to write.
micro-mitten - You might not need your garbage collector
checkedc-clang - This repo contains a version of clang that is being modified to support Checked C. Checked C is an extension to C that lets programmers write C code that is guaranteed by the compiler to be type-safe.
alive2 - Automatic verification of LLVM optimizations