test/tint/bug/tint/492.wgsl

 struct S { a : i32, };
@group(0) @binding(0) var<storage, read_write> buf : S;

@stage(compute) @workgroup_size(1) fn main() {
  let p : ptr<storage, i32, read_write> = &buf.a;
  *p = 12;
}