[GitHub] [incubator-mxnet] szha commented on issue #18789: [bug] Autograd throws an exception that was not caught in MXNet 1.6

[GitBox <gi...@apache.org>]

szha commented on issue #18789:
URL: https://github.com/apache/incubator-mxnet/issues/18789#issuecomment-669334140


   ```python
   In [3]: from mxnet import nd
      ...: import mxnet as mx
      ...: x = mx.np.zeros((10,))
      ...: x.attach_grad()
      ...: mx.npx.set_np()
      ...: class Op(mx.autograd.Function):
      ...:     def forward(self, x):
      ...:         out = x + 1
      ...:         return out
      ...:
      ...:     def backward(self, grad):
      ...:         grad_x = grad
      ...:         return grad_x
      ...:
      ...: op = Op()
      ...: with mx.autograd.record():
      ...:     y = op(x)
      ...:     y.sum().backward()
      ...:
      ...: print(x.grad)
   [1. 1. 1. 1. 1. 1. 1. 1. 1. 1.]
   
   In [4]:
   Do you really want to exit ([y]/n)?
   ```


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