Transpile to mixed C/C++?

[ghost]

Transpiles to C++ to utilize C++'s advanced features, but also wraps the C++ code to be able to use in plain C. There is no need to use GLib as C++ is used as the backend here.

[pfusik]

I don't think that's possible in general.

Example:

public void ProcessList(List<int>! list) { ... }

How would you translate that?