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/_lzmamodule.c

diff --git a/Modules/_lzmamodule.c b/Modules/_lzmamodule.c
index fd3bbb8..5bcd088 100644
--- a/Modules/_lzmamodule.c
+++ b/Modules/_lzmamodule.c
@@ -1173,7 +1173,7 @@
     self->needs_input = 1;
     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;