From 776021c10278d5e3e714237943022e8118fad526 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=A0=E6=98=A5=E4=B9=94?=
 <83450930+Liyulingyue@users.noreply.github.com>
Date: Wed, 1 Feb 2023 15:34:42 +0800
Subject: [PATCH] fix the NullPointerError of matrix_power (#50015)

---
 python/paddle/fluid/tests/unittests/test_matrix_power_op.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/python/paddle/fluid/tests/unittests/test_matrix_power_op.py b/python/paddle/fluid/tests/unittests/test_matrix_power_op.py
index 6381aeeca9868..8296aa320f59b 100644
--- a/python/paddle/fluid/tests/unittests/test_matrix_power_op.py
+++ b/python/paddle/fluid/tests/unittests/test_matrix_power_op.py
@@ -317,6 +317,12 @@ def test_errors(self):
         input = fluid.data(name="input_4", shape=[1, 1, 0, 0], dtype="float32")
         self.assertRaises(ValueError, paddle.linalg.matrix_power, input, 2)
 
+        # The size of input should not be 0
+        input = fluid.data(name="input_5", shape=[0, 0], dtype="float32")
+        self.assertRaises(
+            ValueError, paddle.linalg.matrix_power, input, -956301312
+        )
+
 
 class TestMatrixPowerSingularAPI(unittest.TestCase):
     def setUp(self):