From 85362020e3f1653c916dbe5cfc83e2b63eb30c5f Mon Sep 17 00:00:00 2001
From: Ken Keys <kkeys@caida.org>
Date: Fri, 5 Apr 2019 10:43:55 -0700
Subject: [PATCH] Fix memory leak in get_communities_pyset()

affected all uses of the elem.fields dict
---
 src/_pybgpstream_bgpelem.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/_pybgpstream_bgpelem.c b/src/_pybgpstream_bgpelem.c
index 8e19f32..eaa824f 100644
--- a/src/_pybgpstream_bgpelem.c
+++ b/src/_pybgpstream_bgpelem.c
@@ -82,7 +82,9 @@ static PyObject *get_communities_pyset(bgpstream_community_set_t *communities)
     }
 
     /* add community to set */
-    PySet_Add(set, PYSTR_FROMSTR(comm_buf));
+    PyObject *pystr = PYSTR_FROMSTR(comm_buf);
+    PySet_Add(set, pystr); // does NOT steal reference
+    Py_DECREF(pystr);
   }
   return set;
 }