- 
由 huangjun12 提交于* fix dropout bug in backward when input is 1d tensor, test=develop * add test case and refine error message, test=develop * refine error message, test=develop e69836d2
Fork自 PaddlePaddle / Paddle
* fix dropout bug in backward when input is 1d tensor, test=develop * add test case and refine error message, test=develop * refine error message, test=develop
