}
	}
	if x.before != magicptr || x.after != magicptr {
		t.Fatalf("wrong magic: %#x _ %#x != %#x _ %#x", x.before, x.after, magicptr, magicptr)
	}
}

func TestAndInt32(t *testing.T) {
	var x struct {
		before int32
		i      int32
		after  int32
	}
	x.before = magic32
	x.after = magic32
	x.i = -1
	j := x.i
	for mask := int32(1); mask != 0; mask <<= 1 {