from mindspore.ops import GradOperation, grad
from mindspore.common import mutable, jit
from mindspore.nn import Cell
from mindspore import context
#context.set_context(mode=context.GRAPH_MODE)


class Net(Cell):
    @jit
    def construct(self, x, y):
        return x.count(y)

net = Net()
grad_net = GradOperation(get_all=True)(net)
x = mutable((2, 3, 4), dynamic_len=False)
y = mutable(3)
grad = grad_net(x, y)
print(grad)

Traceback (most recent call last):
  File "grad_net_mutable.py", line 17, in <module>
    grad = grad_net(x, y)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/ops/composite/base.py", line 377, in after_grad
    return grad_(fn)(*args, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 101, in wrapper
    results = fn(*arg, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/ops/composite/base.py", line 364, in after_grad
    self._pynative_forward_run(fn, grad_, args, kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/ops/composite/base.py", line 403, in _pynative_forward_run
    fn(*args, **new_kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/nn/cell.py", line 657, in __call__
    raise err
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/nn/cell.py", line 653, in __call__
    output = self._run_construct(args, kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/nn/cell.py", line 441, in _run_construct
    output = self.construct(*cast_inputs, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 604, in staging_specialize
    out = _MindsporeFunctionExecutor(func, hash_obj, input_signature, process_obj, jit_config)(*args, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 101, in wrapper
    results = fn(*arg, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 328, in __call__
    raise err
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 322, in __call__
    phase = self.compile(self.fn.__name__, *args_list, **kwargs)
  File "/root/miniconda3/envs/ci3.7/lib/python3.7/site-packages/mindspore/common/api.py", line 404, in compile
    is_compile = self._graph_executor.compile(self.obj, compile_args, kwargs, phase, True)
RuntimeError: The pointer[shape_ptr] is null.

----------------------------------------------------
- C++ Call Stack: (For framework developers)
----------------------------------------------------
mindspore/ccsrc/pipeline/pynative/pynative_utils.cc:275 GetShapeFromAbstract