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25
26%!test
27%! a(1) = class_bug46660 ();
28%! a(2) = class_bug46660 ();
29%! a(2).x = 123;
30%! assert (a(2).x, 123);
31%! assert (isempty (a(2).y));
32%!
33%! # writing into a(2).y may not alter a(2).x
34%! a(2).y = 321;
35%! assert (a(2).x, 123);
36%! assert (a(2).y, 321);
37