[GitHub] [incubator-mxnet] samskalicky opened a new issue #15612: WarpCTC build failure in 1.5.0

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samskalicky opened a new issue #15612: WarpCTC build failure in 1.5.0
URL: https://github.com/apache/incubator-mxnet/issues/15612
 
 
   Building the warpCTC plugin fails i 1.5.0 due to this PR https://github.com/apache/incubator-mxnet/pull/14270 
   
   It fails with the following error:
   
   ```
   In file included from plugin/warpctc/warpctc.cc:27:0:
   plugin/warpctc/./warpctc-inl.h: In member function ‘virtual bool mxnet::op::WarpCTCProp::InferShape(mxnet::ShapeVector*, mxnet::ShapeVector*, mxnet::ShapeVector*) const’:
   plugin/warpctc/./warpctc-inl.h:257:48: error: no matching function for call to ‘mxnet::TShape::TShape(int)’
        mxnet::TShape label_shape(dshape.ndim() - 1);
                                                   ^
   plugin/warpctc/./warpctc-inl.h:257:48: note: candidates are:
   In file included from include/mxnet/./base.h:38:0,
                    from include/mxnet/operator.h:38,
                    from plugin/warpctc/./warpctc-inl.h:31,
                    from plugin/warpctc/warpctc.cc:27:
   include/mxnet/./tuple.h:519:10: note: template<int dim> mxnet::TShape::TShape(mshadow::Shape<ndim>&&)
      inline TShape(mshadow::Shape<dim> &&s) {// NOLINT(*)
             ^
   include/mxnet/./tuple.h:519:10: note:   template argument deduction/substitution failed:
   In file included from plugin/warpctc/warpctc.cc:27:0:
   plugin/warpctc/./warpctc-inl.h:257:48: note:   mismatched types ‘mshadow::Shape<ndim>’ and ‘int’
        mxnet::TShape label_shape(dshape.ndim() - 1);
                                                   ^
   ```
   
   looks like nnvm::Tshape takes a single int for constructor:
   https://github.com/dmlc/tvm/blob/master/nnvm/include/nnvm/tuple.h#L352
   
   But mxnet::Tshape does not have this constructor, instead we provide the default value as well (which is value: 1 in nnvm)
   https://github.com/apache/incubator-mxnet/blob/master/include/mxnet/tuple.h#L406

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