test/buffer/storage/types/struct.wgsl

struct Inner {
  f : f32;
};
struct S {
  inner : Inner;
};

[[group(0), binding(0)]]
var<storage, read> in : S;

[[group(0), binding(1)]]
var<storage, read_write> out : S;

[[stage(compute), workgroup_size(1)]]
fn main() {
  out = in;
}