[Panzerschrek]

> On modern OSs you can write Zig and just ignore allocation errors.

I can ignore errors, but I still need to free memory manually if I want to avoid memory leaks. Languages like C++ or Rust have destructors, which do the job for me.

> This language exists to supercede or supplement C

There are way better alternatives, like Rust. Even C++ is better.

[lionkor]

Zig has defer, your point is quite invalid.

[Panzerschrek]

defer can be forgotten to be written. C++ always calls destructors for local variables without additional programmer's intervention needed.