Add test and Misc/NEWS entry.

serhiy-storchaka · serhiy-storchaka · commit 7963df25f2ae · 2017-06-11T14:47:53.000+03:00
diff --git a/Lib/test/test_atexit.py b/Lib/test/test_atexit.py
@@ -23,6 +23,9 @@ def raise1():
 def raise2():
     raise SystemError
 
+def exit():
+    raise SystemExit
+
 
 class GeneralTest(unittest.TestCase):
 
@@ -76,6 +79,13 @@ def test_raise_unnormalized(self):
         self.assertRaises(ZeroDivisionError, atexit._run_exitfuncs)
         self.assertIn("ZeroDivisionError", self.stream.getvalue())
 
+    def test_exit(self):
+        # be sure a SystemExit is handled properly
+        atexit.register(exit)
+
+        self.assertRaises(SystemExit, atexit._run_exitfuncs)
+        self.assertEqual(self.stream.getvalue(), '')
+
     def test_print_tracebacks(self):
         # Issue #18776: the tracebacks should be printed when errors occur.
         def f():
diff --git a/Misc/NEWS b/Misc/NEWS
@@ -355,6 +355,9 @@ Extension Modules
 Library
 -------
 
+- bpo-28994: The traceback no longer displayed for SystemExit raised in
+  a callback registered by atexit.
+
 - bpo-11822: The dis.dis() function now is able to disassemble nested
   code objects.
 
