My [currently development stalled] Registerallocatorless, almost C89 compilant and specifically having plenty of issues with typedefs like SubC, deeply commented custom C Compiler for retro-CPUs.
That's my puppy. A complicated beast of a C program, deeply commented, longest-kept-up project of mine. From Tokenizer to Semanticparser and Codegen, a lot of code was written.
Firstly it's actually not even K&R C, specifically it doesn't like typedefs - where a {declaration or statement} is excepted using typedefs requires forcing statement to declaration using 'auto' and 'static' keywords, elseways compiler will try to access the type as a variable. Otherwise typedefs should be fine.
Current release package from the 1st to current latest is on Catbox. Compile via make (no cmake, nothing! just pure make.).