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Comment by vlovich123

6 hours ago

I can’t think of many real world production systems which don’t have a rust target. Also I’m hopeful the GCC backend for rustc makes some progress and can become an option for the more esoteric ones

There aren't really any "systems programming" platforms anywhere near production that doesn't have a workable rust target.

It's "embedded programming" where you often start to run into weird platforms (or sub-platforms) that only have a c compiler, or the rust compiler that does exist is somewhat borderline. We are sometimes talking about devices which don't even have a gcc port (or the port is based on a very old version of gcc). Which is a shame, because IMO, rust actually excels as an embedded programming language.

Linux is a bit marginal, as it crosses the boundary and is often used as a kernel for embedded devices (especially ones that need to do networking). The 68k people have been hit quite hard by this, linux on 68k is still a semi-common usecase, and while there is a prototype rust back end, it's still not production ready.

  • There’s also I believe an effort to target C as the mid level although I don’t know the state / how well it’ll work in an embedded space anyway where performance really matters and these compilers have super old optimizers that haven’t been updated in 3 decades.

It's mostly embedded / microcontroller stuff. Things that you would use something like SDCC or a vendor toolchain for. Things like the 8051, stm8, PIC or oddball things like the 4 cent Padauk micros everyone was raving about a few years ago. 8051 especially still seems to come up from time to time in things like the ch554 usb controller, or some NRF 2.4ghz wireless chips.

  • Those don’t really support C in any real stretch, talking about general experience with microcontrollers and closed vendor toolchains; it’s a frozen dialect of C from decades ago which isn’t what people think of when they say C (usually people mean at least the 26 year old C99 standard but these often at best support C89 or even come with their own limitations)