gh-151763: Fix crash in `_interpqueues.create` on `MemoryError` (#152131)

diff --git a/Misc/NEWS.d/next/Library/2026-06-25-01-00-43.gh-issue-151763.wWeHBe.rst b/Misc/NEWS.d/next/Library/2026-06-25-01-00-43.gh-issue-151763.wWeHBe.rst
new file mode 100644 (file)
index 0000000..2f5e840
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2026-06-25-01-00-43.gh-issue-151763.wWeHBe.rst
@@ -0,0 +1,2 @@
+Fix crash in :func:`!_interpqueues.create` whe :exc:`MemoryError`
+happens on queue creation.

diff --git a/Modules/_interpqueuesmodule.c b/Modules/_interpqueuesmodule.c
index 9979cd3457e1014cad7b4dad8169fc1e79050ea4..d203ddba7d9c3c97144004ea49bc3941f6d988b2 100644 (file)
--- a/Modules/_interpqueuesmodule.c
+++ b/Modules/_interpqueuesmodule.c
@@ -1101,6 +1101,7 @@ queue_create(_queues *queues, Py_ssize_t maxsize,
     }
     int64_t qid = _queues_add(queues, queue);
     if (qid < 0) {
+        queue->alive = 0;
         _queue_clear(queue);
         GLOBAL_FREE(queue);
     }