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Giving C a superpower: custom header file (safe_c.h)

(hwisnu.bearblog.dev)
271 points mithcs | 6 comments | 17 Nov 25 10:40 UTC | HN request time: 0.001s | source | bottom
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krapht ◴[17 Nov 25 12:41 UTC] No.45953071[source]▶
C++: "look at what others must do to mimic a fraction of my power"

This is cute, but also I'm baffled as to why you would want to use macros to emulate c++. Nothing is stopping you from writing c-like c++ if that's what you like style wise.

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1. sesm ◴[17 Nov 25 14:43 UTC] No.45954009[source]▶
Embedded CPU vendors not shipping C++ compilers is what usually stops people.
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2. kjs3 ◴[17 Nov 25 16:57 UTC] No.45955450[source]▶
Yup. And I like the implication that Rust is 'cross platform', when it's 'tier 1' support consists of 2 architectures (x86 & arm64). I guess we're converging on a world where those 2 + riscv are all that matter to most people, but it's not yet a world where they are all that matter to all people.

[1] https://doc.rust-lang.org/beta/rustc/platform-support.html

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3. dontlaugh ◴[17 Nov 25 18:43 UTC] No.45956560[source]▶
The converging is happening in practice. I’m using a keyboard running RMK for firmware, written in Rust.
4. bangaladore ◴[17 Nov 25 19:08 UTC] No.45956852[source]▶
In my experience most chips released in the past 10+ years ship with C++ compilers.

Quite frankly I'm not sure why you wouldn't given that most are using GCC on common architectures. The chip vendor doesn't have to do any work unless they are working on an obscure architecture.

5. okanat ◴[18 Nov 25 01:38 UTC] No.45960439[source]▶
You are misunderstanding what Tiers are. Embedded architectures cannot be Tier 1 which requires running Rust compiler compiled on the architecture itself and testing stuff on with it. Only full desktop systems will be Tier 1, because those are the systems that you can run Rustc and all the nice desktop environments.

However most of the embedded world uses ARM chips and they are Tier 2 like thumbv6m and thumbv7em (there are still odd ones like 8051 or AVR or m68k, many of them lack a good C++ compiler already). They are guaranteed to be built and at the release time the tests still run for them.

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6. kjs3 ◴[19 Nov 25 04:51 UTC] No.45975984{3}[source]▶
I understand your tiers just fine. You are misunderstanding what "cross platform" means. Or rather, you're trying to redefine it to mean "what Rust supports, in the way we want to support it, on the few architectures we care about, because in our view nothing else of value exists".

However most of the embedded world uses ARM chips

My point exactly.