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Issue #19815: Fix segfault when parsing empty namespace declaration.

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Based on patches by Christian Heimes and Vajrasky Kok
This commit is contained in:
Eli Bendersky 2013-11-28 06:35:40 -08:00
commit 8148164353
2 changed files with 9 additions and 1 deletions
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5
Lib/test/test_xml_etree.py
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@ -526,6 +526,11 @@ class ElementTreeTest(unittest.TestCase):
('end-ns', None),
])
events = ('start-ns', 'end-ns')
context = iterparse(io.StringIO(r"<root xmlns=''/>"), events)
res = [action for action, elem in context]
self.assertEqual(res, ['start-ns', 'end-ns'])
events = ("start", "end", "bogus")
with self.assertRaises(ValueError) as cm:
with open(SIMPLE_XMLFILE, "rb") as f:

5
Modules/_elementtree.c
View file

@ -3038,7 +3038,10 @@ expat_start_ns_handler(XMLParserObject* self, const XML_Char* prefix,
if (PyErr_Occurred())
return;
suri = PyUnicode_DecodeUTF8(uri, strlen(uri), "strict");
if (uri)
suri = PyUnicode_DecodeUTF8(uri, strlen(uri), "strict");
else
suri = PyUnicode_FromString("");
if (!suri)
return;