commit ef20abed7f2ae0ba54b1d287f5fe601be80c1128
author Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Tue Feb 13 03:32:18 2018 -0800
committer GitHub <noreply@github.com> Tue Feb 13 03:32:18 2018 -0800
tree 8c744e5c7df5b8b200f85898b02f724247d870b0
parent 9b5a90b975ef32b261d60b8ec06504f4ffd00d63

bpo-31787: Prevent refleaks when calling __init__() more than once (GH-3995)

(cherry picked from commit d019bc8319ea35e93bf4baa38098ff1b57cd3ee5)

Co-authored-by: Oren Milman <orenmn@gmail.com>

Modules/_bz2module.c

diff --git a/Modules/_bz2module.c b/Modules/_bz2module.c
index dba0e19..0789b61 100644
--- a/Modules/_bz2module.c
+++ b/Modules/_bz2module.c
@@ -644,7 +644,7 @@
     self->bzs_avail_in_real = 0;
     self->input_buffer = NULL;
     self->input_buffer_size = 0;
-    self->unused_data = PyBytes_FromStringAndSize(NULL, 0);
+    Py_XSETREF(self->unused_data, PyBytes_FromStringAndSize(NULL, 0));
     if (self->unused_data == NULL)
         goto error;