From: Yury Selivanov <yury@magic.io>
Date: Tue, 23 Jan 2018 21:26:07 +0000 (-0500)
Subject: bpo-32436: Fix potential NULL dereference (#5286)
X-Git-Tag: v3.7.0b1~127
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0bad4d63c654d93e1f32ff35026405a3987db5ca;p=python

bpo-32436: Fix potential NULL dereference (#5286)
---

diff --git a/Python/hamt.c b/Python/hamt.c
index eb69fdd136..af3dfce43c 100644
--- a/Python/hamt.c
+++ b/Python/hamt.c
@@ -1055,6 +1055,10 @@ hamt_node_bitmap_without(PyHamtNode_Bitmap *self,
 #endif
 
                 PyHamtNode_Bitmap *clone = hamt_node_bitmap_clone(self);
+                if (clone == NULL) {
+                    return W_ERROR;
+                }
+
                 Py_SETREF(clone->b_array[val_idx],
                           (PyObject *)sub_node);  /* borrow */