From fe6aacc01914aa98d49024c194f5fd7c1609eea8 Mon Sep 17 00:00:00 2001
From: Xiaoxu Chen <chenxx_id@163.com>
Date: Tue, 23 Aug 2022 16:32:05 +0800
Subject: [PATCH] replace clone with assign for copying tensor in current block
 (#45309)

---
 python/paddle/incubate/autograd/functional.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/paddle/incubate/autograd/functional.py b/python/paddle/incubate/autograd/functional.py
index 3be95c88d12..79ba7d33097 100644
--- a/python/paddle/incubate/autograd/functional.py
+++ b/python/paddle/incubate/autograd/functional.py
@@ -633,7 +633,7 @@ def _single_separate(x):
     if x is None:  # x maybe none because grad input's v defaults to none.
         return x
     if not x.stop_gradient:
-        return paddle.clone(x)
+        return paddle.assign(x)
     else:  # use detach to share memory when no need gradients.
         x = x.detach()
         x.stop_gradient = False
-- 
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