--- a/src/ov.cc
+++ b/src/ov.cc
@@ -2726,6 +2726,12 @@
   return retval;
 }
 
+/*
+%!assert (sizeof (uint64 (ones (3))), 72)
+%!assert (sizeof (double (zeros (2,4))), 64)
+%!assert (sizeof ({"foo", "bar", "baaz"}), 10)
+*/
+
 DEFUN (subsref, args, nargout,
   "-*- texinfo -*-\n\
 @deftypefn {Built-in Function} {} subsref (@var{val}, @var{idx})\n\
@@ -2834,3 +2840,63 @@
 
   return retval;
 }
+
+/*
+%!test
+%! a = reshape ([1:25], 5,5);
+%! idx1 = substruct ( "()", {3, 3});
+%! idx2 = substruct ( "()", {2:2:5, 2:2:5});
+%! idx3 = substruct ( "()", {":", [1,5]});
+%! assert (subsref (a, idx1), 13)
+%! assert (subsref (a, idx2), [7 17; 9 19])
+%! assert (subsref (a, idx3), [1:5; 21:25]')
+%! a = subsasgn (a, idx1, 0);
+%! a = subsasgn (a, idx2, 0);
+%! a = subsasgn (a, idx3, 0);
+%! b = [0    6   11   16    0
+%!      0    0   12    0    0
+%!      0    8    0   18    0
+%!      0    0   14    0    0
+%!      0   10   15   20    0];
+%! assert (a,b);
+
+%!test
+%! c = num2cell (reshape ([1:25],5,5));
+%! idx1 = substruct  ( "{}", {3, 3});
+%! idx2 = substruct  ( "()", {2:2:5, 2:2:5});
+%! idx3 = substruct  ( "()", {":", [1,5]});
+%! idx2p = substruct  ( "{}", {2:2:5, 2:2:5});
+%! idx3p = substruct  ( "{}", {":", [1,5]});
+%! assert ({ subsref(c, idx1) }, {13})
+%! assert ({ subsref(c, idx2p) }, {7 9 17 19})
+%! assert ({ subsref(c, idx3p) }, num2cell ([1:5, 21:25]))
+%! c = subsasgn (c, idx1, 0);
+%! c = subsasgn (c, idx2, 0);
+%! c = subsasgn (c, idx3, 0);
+%! d = {0    6   11   16    0
+%!      0    0   12    0    0
+%!      0    8    0   18    0
+%!      0    0   14    0    0
+%!      0   10   15   20    0};
+%! assert (c,d);
+
+%!test
+%! s.a = "ohai";
+%! s.b = "dere";
+%! s.c = 42;
+%! idx1 = substruct (".", "a");
+%! idx2 = substruct (".", "b");
+%! idx3 = substruct (".", "c");
+%! assert (subsref (s, idx1), "ohai")
+%! assert (subsref (s, idx2), "dere")
+%! assert (subsref (s, idx3), 42)
+%! s = subsasgn (s, idx1, "Hello");
+%! s = subsasgn (s, idx2, "There");
+%! s = subsasgn (s, idx3, 163);
+%! t.a = "Hello";
+%! t.b = "There";
+%! t.c = 163;
+%! assert (s, t)
+
+*/
+