Fix -Wattributes warning on older versions of gcc (#20587)
Summary:
building with cuda and gcc 4.8.5-28, we see many warnings like:
[893/1645] Building NVCC (Device) object caffe2/CMakeFiles/caffe2_gpu.dir/__/aten/src/THCUNN/caffe2_gpu_generated_ELU.cu.o
/home/bvaughan/repos/pytorch/c10/util/ArrayRef.h:277:48: warning: ‘deprecated’ attribute directive ignored [-Wattributes]
using IntList C10_DEPRECATED_USING = ArrayRef<int64_t>;
This change prevents those warnings on the older compiler.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20587
Differential Revision: D15432749
Pulled By: nairbv
fbshipit-source-id: fd707afcbd6564f96617378d7cd6d62d941a052b
