commit 568867a6f20c5944c0c0aba69603a4d8ff62dae6
author Benjamin Peterson <benjamin@python.org> Sat Sep 11 16:02:03 2010 +0000
committer Benjamin Peterson <benjamin@python.org> Sat Sep 11 16:02:03 2010 +0000
tree 266fff4890746e7a8fd262bbdd3205bd61569853
parent e861598dcbe63bca1f71188a8ddbcbe2e100332f

check for NULL tp_as_mapping in PySequence_(Get/Set/Del)Slice #9834

Objects/abstract.c

diff --git a/Objects/abstract.c b/Objects/abstract.c
index 612271d..4eb33d3 100644
--- a/Objects/abstract.c
+++ b/Objects/abstract.c
@@ -1612,7 +1612,7 @@
     if (!s) return null_error();
 
     mp = s->ob_type->tp_as_mapping;
-    if (mp->mp_subscript) {
+    if (mp && mp->mp_subscript) {
         PyObject *res;
         PyObject *slice = _PySlice_FromIndices(i1, i2);
         if (!slice)
@@ -1690,7 +1690,7 @@
     }
 
     mp = s->ob_type->tp_as_mapping;
-    if (mp->mp_ass_subscript) {
+    if (mp && mp->mp_ass_subscript) {
         int res;
         PyObject *slice = _PySlice_FromIndices(i1, i2);
         if (!slice)
@@ -1715,7 +1715,7 @@
     }
 
     mp = s->ob_type->tp_as_mapping;
-    if (mp->mp_ass_subscript) {
+    if (mp && mp->mp_ass_subscript) {
         int res;
         PyObject *slice = _PySlice_FromIndices(i1, i2);
         if (!slice)