Segfault in dynd::print_builtin_scalar #532

I haven't looked at this in depth, it might be more appropriate for the libdynd tracker:

nd.empty("pointer[int32]")
Segmentation fault (core dumped)

from dynd import nd
nd.empty("pointer[int32]")
==6041== Invalid read of size 4
==6041== at 0x9E16FC3: _ZL8print_asIiiEvRNSt3__113basic_ostreamIcNS0_11char_traitsIcEEEEPKc (type.cpp:703)
==6041== by 0x9E166F8: dynd::print_builtin_scalar(dynd::type_id_t, std::__1::basic_ostream<char, std::_1::char_traits >&, char const) (type.cpp:951)
==6041== by 0x9E15EE1: dynd::ndt::type::print_data(std::__1::basic_ostream<char, std::1::char_traits >&, char const, char const) const (type.cpp:1005)
==6041== by 0x9110029: dynd::ndt::pointer_type::print_data(std::__1::basic_ostream<char, std::_1::char_traits >&, char const, char const*) const (pointer_type.cpp:41)
==6041== by 0x9DC8F10: dynd::nd::operator<<(std::__1::basic_ostream<char, std::_1::char_traits >&, dynd::nd::array const&) (array.cpp:928)
==6041== by 0xFC6DB62: pydynd::array_repr(dynd::nd::array const&) (array_functions.hpp:157)
==6041== by 0xFC525E1: pyx_pf_4dynd_2nd_5array_5array_24__repr(dynd_nd_array_pywrapper) (array.cxx:3439)
==6041== by 0xFC3E0DB: pyx_pw_4dynd_2nd_5array_5array_25__repr(object) (array.cxx:3412)
==6041== by 0x4A09AA: PyObject_Repr (object.c:482)
==6041== by 0x46ABF1: PyFile_WriteObject (fileobject.c:144)
==6041== by 0x59BDE6: sys_displayhook (sysmodule.c:192)
==6041== by 0x63FD3D: PyCFunction_Call (methodobject.c:134)
==6041== Address 0x0 is not stack'd, malloc'd or (recently) free'd