sxjscience opened a new issue #16887: [Numpy] Bug of basic indexing URL: https://github.com/apache/incubator-mxnet/issues/16887 Found this bug when writing random test cases for symbolic indexing. ```python import mxnet as mx from mxnet import gluon mx.npx.set_np() a = mx.np.random.normal(0, 1, (5, 5, 5, 5)) b = mx.np.random.normal(0, 1, (5, 5, 5, 5)) index1 = (slice(3, 0, -1), slice(1, 0, -1), slice(2, 0, -1), slice(3, 0, -1)) index2 = (slice(2, 3, 2), slice(0, 1, 2), slice(1, 2, 2), slice(1, 3, 2)) class Foo(gluon.HybridBlock): def hybrid_forward(self, F, x, y): return (x[()][index1] + y[()][index1])[index2] net = Foo() with mx.autograd.record(): out = net(a, b) ``` Error: ``` MXNetError: [07:04:22] src/ndarray/ndarray.cc:263: Check failed: shape_.Size() == shape.Size() (2 vs. 1) : NDArray.Reshape: target shape must have the same size as current shape when recording with autograd. Stack trace: [bt] (0) /home/ubuntu/mxnet/python/mxnet/../../lib/libmxnet.so(dmlc::LogMessageFatal::~LogMessageFatal()+0x32) [0x7f1da2489c42] [bt] (1) /home/ubuntu/mxnet/python/mxnet/../../lib/libmxnet.so(mxnet::NDArray::ReshapeWithRecord(mxnet::TShape const&)+0x187) [0x7f1da59d4877] [bt] (2) /home/ubuntu/mxnet/python/mxnet/../../lib/libmxnet.so(MXNDArrayReshape64+0xa7) [0x7f1da612f2e7] [bt] (3) /usr/lib/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so(ffi_call_unix64+0x4c) [0x7f1e6fc14e20] [bt] (4) /usr/lib/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so(ffi_call+0x2eb) [0x7f1e6fc1488b] [bt] (5) /usr/lib/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so(_ctypes_callproc+0x49a) [0x7f1e6fc0f01a] [bt] (6) /usr/lib/python3.5/lib-dynload/_ctypes.cpython-35m-x86_64-linux-gnu.so(+0x9fcb) [0x7f1e6fc02fcb] [bt] (7) /usr/bin/python3(PyObject_Call+0x47) [0x5c3bd7] [bt] (8) /usr/bin/python3(PyEval_EvalFrameEx+0x4f2f) [0x5354af] ```
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
