From eb8fc7595ff04213021bfb322d8ecf987681cf41 Mon Sep 17 00:00:00 2001
From: Qi Li <qili93@qq.com>
Date: Fri, 1 Jul 2022 18:02:30 +0800
Subject: [PATCH] [DCU] fix compiling error on DTK22.04, test=develop (#43999)

---
 paddle/fluid/operators/class_center_sample_op.cu | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/paddle/fluid/operators/class_center_sample_op.cu b/paddle/fluid/operators/class_center_sample_op.cu
index 236f783017d..a0642694843 100644
--- a/paddle/fluid/operators/class_center_sample_op.cu
+++ b/paddle/fluid/operators/class_center_sample_op.cu
@@ -220,6 +220,12 @@ class NotEqualToPreviousAdjacentIterator {
     return ret;
   }
 
+  template <typename Distance>
+  __host__ __device__ __forceinline__ self_type operator-(Distance n) const {
+    self_type ret(arr_, offset_ - n);
+    return ret;
+  }
+
   template <typename Distance>
   __host__ __device__ __forceinline__ reference operator[](Distance n) const {
     return *(*this + n);
-- 
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