commit 65c153547ba6a41d11d3d04f84bacb5645a54e5e
author Victor Stinner <victor.stinner@haypocalc.com> Mon Jul 04 03:05:37 2011 +0200
committer Victor Stinner <victor.stinner@haypocalc.com> Mon Jul 04 03:05:37 2011 +0200
tree 5feee1947fdb96d6176861f201e03bd5c4036a45
parent 13502b19c64b2cd37b0b2b66dfcc26d0f028cd84

Issue #12467: warnings: fix a race condition if a warning is emitted at
shutdown, if globals()['__file__'] is None.

Python/_warnings.c

diff --git a/Python/_warnings.c b/Python/_warnings.c
index 88be7db..8456796 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -491,7 +491,7 @@
 
     /* Setup filename. */
     *filename = PyDict_GetItemString(globals, "__file__");
-    if (*filename != NULL) {
+    if (*filename != NULL && PyString_Check(*filename)) {
             Py_ssize_t len = PyString_Size(*filename);
         const char *file_str = PyString_AsString(*filename);
             if (file_str == NULL || (len < 0 && PyErr_Occurred()))