On 3/6/26 2:22 PM, Gisle Vanem wrote:
Hi folks.
I upgraded my Python from 3.10.5 with a pybind11
version 3.0.1 that has worked fine with GnuRadio
for years.
Then yesterday I upgraded my Python to 3.14.2 with
a fresh 'py -3 -m pip install pybind11' which is
version 3.0.2.
This has causes a lot of troubles in building some
GnuRadio .PYDs. Like when compiling
gr-digital/python/digital/bindings/ofdm_serializer_vcc_python.cc:
In file included from ofdm_serializer_vcc_python.cc:20:
In file included from F:/gv/Python314/Lib/site-packages/pybind11/
include\pybind11/complex.h:12:
In file included from F:/gv/Python314/Lib/site-packages/pybind11/
include\pybind11\pybind11.h:12:
In file included from F:/gv/Python314/Lib/site-packages/pybind11/
include\pybind11\detail/class.h:12:
In file included from F:/gv/Python314/Lib/site-packages/pybind11/
include\pybind11/attr.h:13:
In file included from F:/gv/Python314/Lib/site-packages/pybind11/
include\pybind11\detail/common.h:225:
f:\gv\VC_2026\VC\Tools\MSVC\14.50.35717\include\memory(2028,23): error:
cannot cast 'gr::basic_block *' to 'typename
shared_ptr<gr::digital::ofdm_carrier_allocator_cvc>::element_type *'
(aka 'gr::digital::ofdm_carrier_allocator_cvc *') via virtual base
'gr::tagged_stream_block'
2028 | const auto _Ptr = static_cast<typename
shared_ptr<_Ty1>::element_type*>(_Other.get());
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
F:/gv/Python314/Lib/site-packages/pybind11/include\pybind11\detail/
holder_caster_foreign_helpers.h(40,32): note: in instantiation of
function template specialization
'std::static_pointer_cast<gr::digital::ofdm_carrier_allocator_cvc,
gr::basic_block>' requested here
40 | *holder_out =
std::static_pointer_cast<type>(existing);
| ^
...
ofdm_serializer_vcc_python.cc(57,10): note: in instantiation of function
template specialization
'pybind11::class_<gr::digital::ofdm_serializer_vcc,
gr::tagged_stream_block,
std::shared_ptr<gr::digital::ofdm_serializer_vcc>>::def<std::shared_ptr<gr::digital::ofdm_serializer_vcc> (*)(const std::shared_ptr<gr::digital::ofdm_carrier_allocator_cvc> &, const std::basic_string<char> &,
int, const std::basic_string<char> &, bool),
pybind11::detail::void_type (*)(),
std::shared_ptr<gr::digital::ofdm_serializer_vcc> (
const std::shared_ptr<gr::digital::ofdm_carrier_allocator_cvc> &,
const std::basic_string<char> &,
int, const std::basic_string<char> &, bool),
pybind11::detail::void_type (), pybind11::arg,
pybind11::arg_v, pybind11::arg_v, pybind11::arg_v, pybind11::arg_v,
const char *>'
requested here
57 | .def(py::init((std::shared_ptr<ofdm_serializer_vcc>(*)(
| ^
1 error generated.
------------------------
So I ended up with:
pip3 uninstall pybind11
pip3 install pybind11==3.0.1
Has anybody else seen such issues with pybind11 3.0.2?
Hi,
I have seen the same recently in building the `gnuradio` package for
conda-forge. It seems to be an upstream bug:
https://github.com/pybind/pybind11/issues/5989
For now I have also fallen back to building with pybind11 3.0.1 and hope
the pybind11 developers will address it in the next release.
Cheers,
Ryan
