compiler failed due to gemm_conv2d_op.h

[luotao1]

When compiling the latest develop :

/home/luotao02/Paddle/paddle/operators/gemm_conv2d_op.h(79): error: a const_cast can only adjust type qualifiers; it cannot change the underlying type
          detected during:
            implicit generation of "paddle::operators::GemmConv2DKernel<Place, T>::~GemmConv2DKernel() [with Place=paddle::platform::GPUPlace, T=float]" 
/home/luotao02/Paddle/paddle/framework/op_registry.h(109): here
            instantiation of class "paddle::operators::GemmConv2DKernel<Place, T> [with Place=paddle::platform::GPUPlace, T=float]" 
/home/luotao02/Paddle/paddle/framework/op_registry.h(109): here
            implicit generation of "paddle::operators::GemmConv2DKernel<Place, T>::GemmConv2DKernel() [with Place=paddle::platform::GPUPlace, T=float]" 
/home/luotao02/Paddle/paddle/framework/op_registry.h(109): here
            instantiation of class "paddle::operators::GemmConv2DKernel<Place, T> [with Place=paddle::platform::GPUPlace, T=float]" 
/home/luotao02/Paddle/paddle/framework/op_registry.h(109): here
            instantiation of "paddle::framework::OpKernelRegistrar<PlaceType, KernelType>::OpKernelRegistrar(const char *) [with PlaceType=paddle::platform::GPUPlace, KernelType=paddle::operators::GemmConv2DKernel<paddle::platform::GPUPlace, float>]" 
/home/luotao02/Paddle/paddle/operators/conv2d_op.cu(19): here

make64[2]: *** [paddle/operators/CMakeFiles/conv2d_op.dir/conv2d_op_generated_conv2d_op.cu.o] Error 1
make64[1]: *** [paddle/operators/CMakeFiles/conv2d_op.dir/all] Error 2
make64: *** [all] Error 2

[Xreki]

I met the same error.

[hedaoyuan]

Sorry, when merging #4042, I did not notice that class ExecutionContext has been modified.