C-Compiler

That is so awesome! I'd really like to see more people bringing back the spirit of early computing with much more tinkering at the computer rather than app level. I've been thinking about doing a long term hobby project of creating a personal computer - one where I create the entire software stack myself and can know the provenance of every bit that goes into the system (though I can't do the same with the hardware, unless I can get enough performance out of an FPGA to run everything on it). Until now it seemed unrealistic but you proved it's possible! And looks like you're even implementing a hobby C compiler: https://github.com/joexbayer/C-Compiler

There is no magic interaction between the compiler and OS. It simples compiles to the same machine code (i386) and uses interrupts for system calls. Structs are handled as a memory region with a size based on its members, and the member access is simply an offset into that region. Current it has lots of limitations such as only int and char, no switch statements etc. The biggest change from default C, is allowing functions in structs and implicit passing a struct to a function if it’s a struct function. You can read more here: https://github.com/joexbayer/C-Compiler