From 8aa095ca4fd09563654ff287799340b31771e282 Mon Sep 17 00:00:00 2001
From: hong <43953930+phlrain@users.noreply.github.com>
Date: Fri, 24 Apr 2020 10:06:02 +0800
Subject: [PATCH] Pick fix warpctx in dygraph mode (#24120)

* change compare op fore_cpu true to false; test=develop

* pick fix warpctc bug in dygrpah mode; test=develop
---
 python/paddle/fluid/layers/loss.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/paddle/fluid/layers/loss.py b/python/paddle/fluid/layers/loss.py
index dc61aa1f4cf..7c83b0db24d 100644
--- a/python/paddle/fluid/layers/loss.py
+++ b/python/paddle/fluid/layers/loss.py
@@ -611,7 +611,7 @@ def warpctc(input,
     """
     helper = LayerHelper('warpctc', **locals())
     this_inputs = {'Logits': [input], 'Label': [label]}
-    if input_length and label_length:
+    if input_length is not None and label_length is not None:
         this_inputs['LogitsLength'] = [input_length]
         this_inputs['LabelLength'] = [label_length]
 
-- 
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