Fix PL/Python memory leak involving array slices

Report and patch from Daniel Popowich, bug #5842
(with some debugging help from Alex Hunsaker)

diff --git a/src/pl/plpython/plpython.c b/src/pl/plpython/plpython.c
index 1f8c27f632a994e68c4f5e9a98678d4a9c00feaa..dd2b9190fca757068360fcaaff3cf0e752648309 100644 (file)
--- a/src/pl/plpython/plpython.c
+++ b/src/pl/plpython/plpython.c
@@ -3201,14 +3201,9 @@ PLy_result_ass_item(PyObject *arg, Py_ssize_t idx, PyObject *item)
 static PyObject *
 PLy_result_slice(PyObject *arg, Py_ssize_t lidx, Py_ssize_t hidx)
 {
-   PyObject   *rv;
    PLyResultObject *ob = (PLyResultObject *) arg;
 
-   rv = PyList_GetSlice(ob->rows, lidx, hidx);
-   if (rv == NULL)
-       return NULL;
-   Py_INCREF(rv);
-   return rv;
+   return PyList_GetSlice(ob->rows, lidx, hidx);
 }
 
 static int