[Python-checkins] cpython (merge 3.2 -> default): #12017: merge with 3.2.
ezio.melotti
python-checkins at python.org
Sat May 7 17:29:34 CEST 2011
http://hg.python.org/cpython/rev/389620c9e609
changeset: 69912:389620c9e609
parent: 69908:9688977ef567
parent: 69911:db97968379dd
user: Ezio Melotti <ezio.melotti at gmail.com>
date: Sat May 07 18:29:14 2011 +0300
summary:
#12017: merge with 3.2.
files:
Lib/test/json_tests/test_recursion.py | 11 +++++++++++
Misc/NEWS | 6 +++++-
Modules/_json.c | 15 +++++++++++++--
3 files changed, 29 insertions(+), 3 deletions(-)
diff --git a/Lib/test/json_tests/test_recursion.py b/Lib/test/json_tests/test_recursion.py
--- a/Lib/test/json_tests/test_recursion.py
+++ b/Lib/test/json_tests/test_recursion.py
@@ -65,3 +65,14 @@
pass
else:
self.fail("didn't raise ValueError on default recursion")
+
+
+ def test_highly_nested_objects(self):
+ # test that loading highly-nested objects doesn't segfault when C
+ # accelerations are used. See #12017
+ with self.assertRaises(RuntimeError):
+ json.loads('{"a":' * 100000 + '1' + '}' * 100000)
+ with self.assertRaises(RuntimeError):
+ json.loads('{"a":' * 100000 + '[1]' + '}' * 100000)
+ with self.assertRaises(RuntimeError):
+ json.loads('[' * 100000 + '1' + ']' * 100000)
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -580,8 +580,11 @@
- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.
-Extensions
-----------
+Extension Modules
+-----------------
+
+- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
+ objects using the C accelerations.
- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
to an instance of the class.
diff --git a/Modules/_json.c b/Modules/_json.c
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -943,6 +943,7 @@
Returns a new PyObject representation of the term.
*/
+ PyObject *res;
Py_UNICODE *str = PyUnicode_AS_UNICODE(pystr);
Py_ssize_t length = PyUnicode_GET_SIZE(pystr);
if (idx >= length) {
@@ -957,10 +958,20 @@
next_idx_ptr);
case '{':
/* object */
- return _parse_object_unicode(s, pystr, idx + 1, next_idx_ptr);
+ if (Py_EnterRecursiveCall(" while decoding a JSON object "
+ "from a unicode string"))
+ return NULL;
+ res = _parse_object_unicode(s, pystr, idx + 1, next_idx_ptr);
+ Py_LeaveRecursiveCall();
+ return res;
case '[':
/* array */
- return _parse_array_unicode(s, pystr, idx + 1, next_idx_ptr);
+ if (Py_EnterRecursiveCall(" while decoding a JSON array "
+ "from a unicode string"))
+ return NULL;
+ res = _parse_array_unicode(s, pystr, idx + 1, next_idx_ptr);
+ Py_LeaveRecursiveCall();
+ return res;
case 'n':
/* null */
if ((idx + 3 < length) && str[idx + 1] == 'u' && str[idx + 2] == 'l' && str[idx + 3] == 'l') {
--
Repository URL: http://hg.python.org/cpython
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