2 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_bz2.py b/Lib/test/test_bz2.py
index c97ed1c..e4dd7fc 100644
--- a/Lib/test/test_bz2.py
+++ b/Lib/test/test_bz2.py
@@ -844,6 +844,10 @@ class BZ2DecompressorTest(BaseTest):
             bzd.__init__()
         self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10)
 
+    def test_uninitialized_BZ2Decompressor_crash(self):
+        self.assertEqual(BZ2Decompressor.__new__(BZ2Decompressor).
+                         decompress(bytes()), b'')
+
 
 class CompressDecompressTest(BaseTest):
     def testCompress(self):
diff --git a/Lib/test/test_lzma.py b/Lib/test/test_lzma.py
index 18f474b..ac53bdd 100644
--- a/Lib/test/test_lzma.py
+++ b/Lib/test/test_lzma.py
@@ -380,6 +380,10 @@ class CompressorDecompressorTestCase(unittest.TestCase):
             lzd.__init__()
         self.assertAlmostEqual(gettotalrefcount() - refs_before, 0, delta=10)
 
+    def test_uninitialized_LZMADecompressor_crash(self):
+        self.assertEqual(LZMADecompressor.__new__(LZMADecompressor).
+                         decompress(bytes()), b'')
+
 
 class CompressDecompressFunctionTestCase(unittest.TestCase):