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3// modification, are permitted provided that the following conditions are
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27
28// Test re-initializing existing field which is already being tracked as
29// having double representation.
30(function() {
31  function test1(a) {
32    return { x: 1.5, x: a };
33  };
34
35  assertEquals({}, test1({}).x);
36})();
37
38// Test initializing new field which follows an existing transition to a
39// map that tracks it as having double representation.
40(function() {
41  function test1(a) {
42    return { y: a };
43  };
44
45  function test2(a) {
46    return { y: a };
47  };
48
49  assertEquals(1.5, test1(1.5).y);
50  assertEquals({}, test2({}).y);
51})();
52