zz
checkedc
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zz | checkedc | |
---|---|---|
10 | 21 | |
1,604 | 3,183 | |
- | 0.6% | |
1.9 | 0.0 | |
almost 2 years ago | over 1 year ago | |
Rust | C | |
MIT License | GNU General Public License v3.0 or later |
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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!
checkedc
- The NSA list of memory-safe programming languages has been updated
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The Fil-C Manifesto: Garbage In, Memory Safety Out
https://github.com/microsoft/checkedc
Also, one can combine subsets of C with FOSS, static analyzers that can handle those subsets. Then, compose only in ways that the tools can handle. Then, combinatorial and fuzz testing of the interface composition.
I know you’re doing the project for fun while exploring specific ways to achieve your goals. So, these are just some links and concepts that might help on your journey. Lots of folks don’t know about prior work in this area. So, I keep passing it on.
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My Bad Habit of Hoarding Information
- [Checked C](https://github.com/microsoft/checkedc) - extensions to make C safer #cpp
- Checked C
- Is it possible to have a superset of the C programming languages standard that is as safe as Rust?
- Checked C by Microsoft Research
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Azure CTO: “It's time to halt starting any new projects in C/C++ ”
Yes. Microsoft Research is working on "Checked C": https://www.microsoft.com/en-us/research/project/checked-c/
As a test, someone ported FreeBSD's networking stack to Checked C. It was easy and there was no overhead to performance and binary size.
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I want to learn csharp man
Haha. I think they did ultimately agree. Thus a later research project is: Checked-C
What are some alternatives?
TinyGo - Go compiler for small places. Microcontrollers, WebAssembly (WASM/WASI), and command-line tools. Based on LLVM.
koka - Koka language compiler and interpreter
angr - A powerful and user-friendly binary analysis platform!
rust.ko - A minimal Linux kernel module written in rust.
CrossHair - An analysis tool for Python that blurs the line between testing and type systems.
manyclangs - Repository hosting unofficial binary pack files for many commits of LLVM
micro-mitten - You might not need your garbage collector
c2rust - Migrate C code to Rust
alive2 - Automatic verification of LLVM optimizations
linux - Linux kernel source tree
dafny - Dafny is a verification-aware programming language