There's a relevant open issue[1] here about stack memory optimization. It would be nice to be able to use a [500]u8 in a block and another [500]u8 in another block, and have that only contribute 500 bytes to the stack frame, but Zig can't currently do this.

(The green threads coro stack stuff makes this more important.)

[1]: https://github.com/ziglang/zig/issues/23475#issuecomment-279...