From 288b1e75de24410c1f6156d8ae06a53002375a9f Mon Sep 17 00:00:00 2001
From: Qinghe JING <jingqinghe@baidu.com>
Date: Mon, 6 Jan 2020 13:08:28 +0800
Subject: [PATCH] Fix segmentation fault bug in reduce ops (#22079)

* fix dim=[] bug in reduce ops
---
 python/paddle/fluid/layers/nn.py | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/python/paddle/fluid/layers/nn.py b/python/paddle/fluid/layers/nn.py
index 8fa7d29a63..c1fdf12df7 100644
--- a/python/paddle/fluid/layers/nn.py
+++ b/python/paddle/fluid/layers/nn.py
@@ -3882,9 +3882,9 @@ def reduce_sum(input, dim=None, keep_dim=False, name=None):
     if dim is not None and not isinstance(dim, list):
         dim = [dim]
     attrs = {
-        'dim': dim if dim != None else [0],
+        'dim': dim if dim != None and dim != [] else [0],
         'keep_dim': keep_dim,
-        'reduce_all': True if dim == None else False
+        'reduce_all': True if dim == None or dim == [] else False
     }
 
     if in_dygraph_mode():
@@ -3957,9 +3957,9 @@ def reduce_mean(input, dim=None, keep_dim=False, name=None):
     if dim is not None and not isinstance(dim, list):
         dim = [dim]
     attrs = {
-        'dim': dim if dim != None else [0],
+        'dim': dim if dim != None and dim != [] else [0],
         'keep_dim': keep_dim,
-        'reduce_all': True if dim == None else False
+        'reduce_all': True if dim == None or dim == [] else False
     }
 
     if in_dygraph_mode():
@@ -4034,9 +4034,9 @@ def reduce_max(input, dim=None, keep_dim=False, name=None):
         inputs={'X': input},
         outputs={'Out': out},
         attrs={
-            'dim': dim if dim != None else [0],
+            'dim': dim if dim != None and dim != [] else [0],
             'keep_dim': keep_dim,
-            'reduce_all': True if dim == None else False
+            'reduce_all': True if dim == None or dim == [] else False
         })
     return out
 
@@ -4095,9 +4095,9 @@ def reduce_min(input, dim=None, keep_dim=False, name=None):
         inputs={'X': input},
         outputs={'Out': out},
         attrs={
-            'dim': dim if dim != None else [0],
+            'dim': dim if dim != None and dim != [] else [0],
             'keep_dim': keep_dim,
-            'reduce_all': True if dim == None else False
+            'reduce_all': True if dim == None or dim == [] else False
         })
     return out
 
@@ -4157,9 +4157,9 @@ def reduce_prod(input, dim=None, keep_dim=False, name=None):
         inputs={'X': input},
         outputs={'Out': out},
         attrs={
-            'dim': dim if dim != None else [0],
+            'dim': dim if dim != None and dim != [] else [0],
             'keep_dim': keep_dim,
-            'reduce_all': True if dim == None else False
+            'reduce_all': True if dim == None or dim == [] else False
         })
     return out
 
@@ -4215,9 +4215,9 @@ def reduce_all(input, dim=None, keep_dim=False, name=None):
         inputs={'X': input},
         outputs={'Out': out},
         attrs={
-            'dim': dim if dim != None else [0],
+            'dim': dim if dim != None and dim != [] else [0],
             'keep_dim': keep_dim,
-            'reduce_all': True if dim == None else False
+            'reduce_all': True if dim == None or dim == [] else False
         })
     return out
 
@@ -4273,9 +4273,9 @@ def reduce_any(input, dim=None, keep_dim=False, name=None):
         inputs={'X': input},
         outputs={'Out': out},
         attrs={
-            'dim': dim if dim != None else [0],
+            'dim': dim if dim != None and dim != [] else [0],
             'keep_dim': keep_dim,
-            'reduce_all': True if dim == None else False
+            'reduce_all': True if dim == None or dim == [] else False
         })
     return out
 
-- 
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