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 1d5687f..54af7f2 100644 (file)
--- a/src/pl/plpython/plpython.c
+++ b/src/pl/plpython/plpython.c
@@ -2772,14 +2772,9 @@ 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