Comment by duped

There are more managed langauges than Go, Java, and C#. Swift (and Objective C with ARC) are a bit different in that they don't use mark and sweep/generational GCs for automatic memory management so it's significantly less of an issue. Compare with Lua, Python, JS, etc where there's a serialization boundary between the two.

But I stand by what I said. It's generally unwise to mix the two, particularly calling unmanaged code from managed code.

I wouldn't say it's "not a problem" because there are very few environments where you don't pay some cost for mixing and matching between managed/unmanaged code, and the environments designed around it are built from first principles to support it, like .NET. More interesting to me are Graal and WASM (once GC support lands) which should make it much easier to deal with.