From bc4606922578d2efab4d75425e15b8c380973b59 Mon Sep 17 00:00:00 2001
From: liu zhengxi <380185688@qq.com>
Date: Wed, 21 Oct 2020 16:32:48 +0800
Subject: [PATCH] fix dynamic decode imperative (#28160)

---
 python/paddle/fluid/layers/rnn.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/paddle/fluid/layers/rnn.py b/python/paddle/fluid/layers/rnn.py
index 079187e09c9..05272a7cefb 100644
--- a/python/paddle/fluid/layers/rnn.py
+++ b/python/paddle/fluid/layers/rnn.py
@@ -1395,7 +1395,7 @@ def _dynamic_decode_imperative(decoder,
         control_flow.increment(x=step_idx_tensor, value=1.0, in_place=True)
         step_idx += 1
 
-        control_flow.logical_not(nn.reduce_all(finished), cond)
+        cond = control_flow.logical_not(nn.reduce_all(finished))
         if max_step_num is not None and step_idx > max_step_num:
             break
 
-- 
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