That’s an easily solvable problem for programming. Today ChatGPT has an embedded Python runtime that it can use to verify its own code and I have seen times that it will try different techniques if the code doesn’t give the expected answer. The one time I can remember is with generating regex.

I don’t see any reason that an IDE especially with a statically typed language can’t have an AI integrated that at least will never hallucinate classes/functions that don’t exist.

Modern IDEs can already give you real time errors across large solutions for code that won’t compile.

Tools need to mature.