From 104c82b1b82fe048da41ce9a1700f8acd76eea3c Mon Sep 17 00:00:00 2001
From: huangjun12 <12272008@bjtu.edu.cn>
Date: Mon, 26 Jul 2021 07:13:09 +0000
Subject: [PATCH] fix lrn bug when shape=0

---
 python/paddle/fluid/tests/unittests/test_lrn_op.py | 6 ++++++
 python/paddle/nn/functional/norm.py                | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/python/paddle/fluid/tests/unittests/test_lrn_op.py b/python/paddle/fluid/tests/unittests/test_lrn_op.py
index 2b632b2437..5882419698 100644
--- a/python/paddle/fluid/tests/unittests/test_lrn_op.py
+++ b/python/paddle/fluid/tests/unittests/test_lrn_op.py
@@ -323,6 +323,12 @@ class TestLocalResponseNormFAPIError(unittest.TestCase):
 
             self.assertRaises(ValueError, test_dim)
 
+            def test_shape():
+                x = fluid.data(name='x', shape=[0, 0, 2, 3], dtype="float32")
+                paddle.nn.functional.local_response_norm(x, size=5)
+
+            self.assertRaises(ValueError, test_shape)
+
 
 class TestLocalResponseNormCAPI(unittest.TestCase):
     def setUp(self):
diff --git a/python/paddle/nn/functional/norm.py b/python/paddle/nn/functional/norm.py
index 863787c00e..c61fafdcb9 100644
--- a/python/paddle/nn/functional/norm.py
+++ b/python/paddle/nn/functional/norm.py
@@ -487,6 +487,12 @@ def local_response_norm(x,
             'Expected 3D or higher dimensionality input, but got {} dimensions'.
             format(dim))
 
+    for i, size in enumerate(sizes):
+        if not size > 0:
+            raise ValueError("Expected every dim's size to be larger than 0, "
+                             "but the size of the {}-th dim is {}".format(i,
+                                                                          size))
+
     channel_last = True if data_format[-1] == "C" else False
 
     from functools import reduce
-- 
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