You mean like LSP? Why would a compiler and a language server be integrated in the first place? Clearly a LSP server wouldn't use a no-freeing strategy, but there's no reason why it would cause issue with a compiler. A compiler must terminate, assuming parsing isn't turing complete (like Perl) and that the source code is finite. This is why it's okay for it to leak memory.
> Why would a compiler and a language server be integrated in the first place?
Because a language server needs to do a lot of the same work as a compiler.
This is an eventual hope for rustc. For now, the latest language server and it share a bunch of libraries, but language servers are effectively compiler frontends.
