Issue #13019: Fix potential reference leaks in bytearray.extend().
Patch by Suman Saha.
diff --git a/Misc/NEWS b/Misc/NEWS
index 3a4dfe0..12ca91b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@
Core and Builtins
-----------------
+- Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch
+ by Suman Saha.
+
- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they
are passed arguments and their complementary method is not overridden.
diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 1b88f12..1846ec5 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -2289,8 +2289,10 @@
}
bytearray_obj = PyByteArray_FromStringAndSize(NULL, buf_size);
- if (bytearray_obj == NULL)
+ if (bytearray_obj == NULL) {
+ Py_DECREF(it);
return NULL;
+ }
buf = PyByteArray_AS_STRING(bytearray_obj);
while ((item = PyIter_Next(it)) != NULL) {
@@ -2323,8 +2325,10 @@
return NULL;
}
- if (bytearray_setslice(self, Py_SIZE(self), Py_SIZE(self), bytearray_obj) == -1)
+ if (bytearray_setslice(self, Py_SIZE(self), Py_SIZE(self), bytearray_obj) == -1) {
+ Py_DECREF(bytearray_obj);
return NULL;
+ }
Py_DECREF(bytearray_obj);
Py_RETURN_NONE;