# HG changeset patch
# Parent  dfe62f685538b7d9a895ed33c775b8b9cf312ef8

diff --git a/Lib/test/test_tarfile.py b/Lib/test/test_tarfile.py
--- a/Lib/test/test_tarfile.py
+++ b/Lib/test/test_tarfile.py
@@ -364,6 +364,33 @@
             finally:
                 tar.close()
 
+    def test_premature_eof1(self):
+        for size in (512, 600, 1024, 1200, 1536):
+            with tarfile.open(tmpname, "w:") as tar:
+                t = tarfile.TarInfo("foo")
+                t.size = 1024
+                tar.addfile(t, io.BytesIO(b"a" * 1024))
+
+            os.truncate(tmpname, size)
+
+            with tarfile.open(tmpname) as tar:
+                with self.assertRaises(Exception):
+                    for t in tar:
+                        pass
+
+    def test_premature_eof2(self):
+        for size in (512, 600, 1024, 1200):
+            with tarfile.open(tmpname, "w:") as tar:
+                t = tarfile.TarInfo("foo")
+                t.size = 1024
+                tar.addfile(t, io.BytesIO(b"a" * 1024))
+
+            os.truncate(tmpname, size)
+
+            with tarfile.open(tmpname) as tar:
+                with self.assertRaises(Exception):
+                    tar.extractfile(tar.next()).read()
+
 
 class MiscReadTestBase(CommonReadTest):
     def requires_name_attribute(self):