Warning in lod_reset_op.h : Comparison of integers of different signs

[abhinavarora]

In file included from /Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/operators/lod_reset_op.cc:15:
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/operators/lod_reset_op.h:38:9: warning: comparison of integers of different signs:
      'unsigned long' and 'int64_t' (aka 'long long') [-Wsign-compare]
        PADDLE_ENFORCE_EQ(last_level.back(), in->dims()[0],
        ^                 ~~~~~~~~~~~~~~~~~  ~~~~~~~~~~~~~
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/platform/enforce.h:227:43: note: expanded from macro 'PADDLE_ENFORCE_EQ'
  __PADDLE_BINARY_COMPARE(__VAL0, __VAL1, ==, !=, __VA_ARGS__)
                          ~~~~~~  ~~~~~~  ^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/platform/enforce.h:248:28: note: expanded from macro '__PADDLE_BINARY_COMPARE'
    if (UNLIKELY(!((__VAL0)__CMP(__VAL1)))) {                           \
                    ~~~~~~ ^     ~~~~~~
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/platform/enforce.h:108:64: note: expanded from macro 'UNLIKELY'
#define UNLIKELY(condition) __builtin_expect(static_cast<bool>(condition), 0)
                                                               ^~~~~~~~~
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/framework/op_registry.h:86:64: note: in instantiation of member function
      'paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, double>::Compute' requested here
    OperatorWithKernel::AllOpKernels()[op_type][key].reset(new KERNEL_TYPE);
                                                               ^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/framework/op_registry.h:91:5: note: in instantiation of member function
      'paddle::framework::OpKernelRegistrarFunctor<paddle::platform::CPUPlace, false, 1, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace,
      float>, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, double>, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, int>,
      paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, long long> >::operator()' requested here
    func(op_type, library_type);
    ^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/framework/op_registry.h:106:5: note: in instantiation of member function
      'paddle::framework::OpKernelRegistrarFunctor<paddle::platform::CPUPlace, false, 0, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace,
      float>, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, double>, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, int>,
      paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, long long> >::operator()' requested here
    func(op_type, library_type);
    ^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/operators/lod_reset_op.cc:160:1: note: in instantiation of member function
      'paddle::framework::OpKernelRegistrar<paddle::platform::CPUPlace, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, float>,
      paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, double>, paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, int>,
      paddle::operators::LoDResetKernel<paddle::platform::CPUPlace, long long> >::OpKernelRegistrar' requested here
REGISTER_OP_CPU_KERNEL(
^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/framework/op_registry.h:196:3: note: expanded from macro 'REGISTER_OP_CPU_KERNEL'
  REGISTER_OP_KERNEL(op_type, CPU, ::paddle::platform::CPUPlace, __VA_ARGS__)
  ^
/Users/aroraabhinav/Documents/workspace/paddlepaddle/Paddle/paddle/fluid/framework/op_registry.h:185:7: note: expanded from macro 'REGISTER_OP_KERNEL'
      __op_kernel_registrar_##op_type##_##LIBRARY_TYPE##__(#op_type,       \
      ^
<scratch space>:110:1: note: expanded from here
__op_kernel_registrar_lod_reset_CPU__
^