`tvatiteropenarray` test fails with c++

[arnetheduck]

iterator iterAndZero(a: var openArray[int]): int =
  for i in 0..len(a)-1:
    yield a[i]
    a[i] = 0

var x = [[1, 2, 3], [4, 5, 6]]
for y in iterAndZero(x[0]): write(stdout, $y)
#OUT 123

write stdout, "\n"

nimcache/@mtitervaropenarray.nim.cpp:90:59: error: member reference base type 'tyArray__Bd4h7Ocx9bGTvrKzPIWNlHw' (aka 'long[3]') is not a structure or union
                        colontmp_ = (NI)(x__titervaropenarray_12[(((NI) 0))- 0].Field1 - ((NI) 1));
                                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
nimcache/@mtitervaropenarray.nim.cpp:96:70: error: member reference base type 'tyArray__Bd4h7Ocx9bGTvrKzPIWNlHw' (aka 'long[3]') is not a structure or union
                                        y__titervaropenarray_13 = x__titervaropenarray_12[(((NI) 0))- 0].Field0[i];
                                                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
nimcache/@mtitervaropenarray.nim.cpp:99:44: error: member reference base type 'tyArray__Bd4h7Ocx9bGTvrKzPIWNlHw' (aka 'long[3]') is not a structure or union
                                        x__titervaropenarray_12[(((NI) 0))- 0].Field0[i] = ((NI) 0);
                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~

nim cpp tvariteropenarray

nim 1.6.6