/* Make sure that union copying works properly */

include_c "math.h";

struct zow { double x; };

union foo {
  int i;
  zow z;
};

fun bar(foo! f) {
  switch (f) {
  case i:
    i = 2;
  case z:
    z = @zow{ x = 2.0 };
  }
}

fun main() -> int@ {
  let f = @foo{ i = 1 };
  let g = @foo{ z = @zow{ x = 1.0 } };
  bar(f);
  bar(g);
  switch (f) {
  case i:
    switch (g) {
    case i:
      return -1;
    case z:
      return (i + d2i(floor(z.x))) - 4;
    }
  case z:
    return -1;
  }
}