test/buffer/storage/types/runtime_array.wgsl

struct S {
  f : f32;
};

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

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

[[stage(compute), workgroup_size(1)]]
fn main() {
  out[0] = in[0];
}