bpo-33623: Fix possible SIGSGV when asyncio.Future is created in __del__ (GH-7080)
(cherry picked from commit 35230d08e09de4e2e52658d5cb09e5b0ca965418)
Co-authored-by: Yury Selivanov <yury@magic.io>
diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index 6d7249a..c4d1903 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -501,7 +501,13 @@
if (is_true < 0) {
return -1;
}
- if (is_true) {
+ if (is_true && !_Py_IsFinalizing()) {
+ /* Only try to capture the traceback if the interpreter is not being
+ finalized. The original motivation to add a `_Py_IsFinalizing()`
+ call was to prevent SIGSEGV when a Future is created in a __del__
+ method, which is called during the interpreter shutdown and the
+ traceback module is already unloaded.
+ */
fut->fut_source_tb = _PyObject_CallNoArg(traceback_extract_stack);
if (fut->fut_source_tb == NULL) {
return -1;