commit d8cba5d16f1333fd625726fc72e66afbd45b8d00
author Zackery Spytz <zspytz@gmail.com> Tue Jul 03 13:47:22 2018 -0600
committer Antoine Pitrou <pitrou@free.fr> Tue Jul 03 21:47:22 2018 +0200
tree 6aa57f4d44036535b4cdf7895e92cd235a5b8f4f
parent 831c29721dcb1b768c6315a4b8a4059c4c97ee8b

bpo-24596: Decref module in PyRun_SimpleFileExFlags() on SystemExit (GH-7918)

PyErr_Print() will not return when the exception is a SystemExit, so
decref the __main__ module object in that case.

Python/pythonrun.c

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 5cf7c33..bcd1ca9 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -431,6 +431,7 @@
     }
     flush_io();
     if (v == NULL) {
+        Py_CLEAR(m);
         PyErr_Print();
         goto done;
     }
@@ -439,7 +440,7 @@
   done:
     if (set_file_name && PyDict_DelItemString(d, "__file__"))
         PyErr_Clear();
-    Py_DECREF(m);
+    Py_XDECREF(m);
     return ret;
 }