[3.13] gh-145376: Fix refleak in queuemodule.c out-of-memory path (GH-145543) (#145621)

miss-islington · eendebakpt · web-flow · commit 1a73d5a35c6d · 2026-03-08T13:32:39.000+05:30
gh-145376: Fix refleak in `queuemodule.c` out-of-memory path (GH-145543) (cherry picked from commit 0aeaaaf) Co-authored-by: Pieter Eendebak <pieter.eendebak@gmail.com>
diff --git a/Modules/_queuemodule.c b/Modules/_queuemodule.c
@@ -165,6 +165,7 @@ RingBuf_Put(RingBuf *buf, PyObject *item)
         // Buffer is full, grow it.
         if (resize_ringbuf(buf, buf->items_cap * 2) < 0) {
             PyErr_NoMemory();
+            Py_DECREF(item);
             return -1;
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -165,6 +165,7 @@ RingBuf_Put(RingBuf buf, PyObject item)`
`165`	`165`	`// Buffer is full, grow it.`
`166`	`166`	`if (resize_ringbuf(buf, buf->items_cap * 2) < 0) {`
`167`	`167`	`PyErr_NoMemory();`
	`168`	`+ Py_DECREF(item);`
`168`	`169`	`return -1;`
`169`	`170`	`}`
`170`	`171`	`}`