Merged revisions 78876 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r78876 | victor.stinner | 2010-03-12 18:17:58 +0100 (ven., 12 mars 2010) | 3 lines

  Issue #6697: catch _PyUnicode_AsString() errors in getattr() and setattr()
  builtin functions.
........

2 files changed, 14 insertions, 5 deletions

diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index f88a2d5d..34c2bb1 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -495,6 +495,8 @@ class BuiltinTest(unittest.TestCase):
         self.assertRaises(TypeError, getattr, sys, 1, "foo")
         self.assertRaises(TypeError, getattr)
         self.assertRaises(AttributeError, getattr, sys, chr(sys.maxunicode))
+        # unicode surrogates are not encodable to the default encoding (utf8)
+        self.assertRaises(AttributeError, getattr, 1, "\uDAD1\uD51E")
 
     def test_hasattr(self):
         import sys
diff --git a/Objects/object.c b/Objects/object.c
index 3a6db18..eba061b 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -797,8 +797,12 @@ PyObject_GetAttr(PyObject *v, PyObject *name)
 	}
 	if (tp->tp_getattro != NULL)
 		return (*tp->tp_getattro)(v, name);
-	if (tp->tp_getattr != NULL)
-		return (*tp->tp_getattr)(v, _PyUnicode_AsString(name));
+	if (tp->tp_getattr != NULL) {
+		char *name_str = _PyUnicode_AsString(name);
+		if (name_str == NULL)
+			return NULL;
+		return (*tp->tp_getattr)(v, name_str);
+	}
 	PyErr_Format(PyExc_AttributeError,
 		     "'%.50s' object has no attribute '%U'",
 		     tp->tp_name, name);
@@ -838,7 +842,10 @@ PyObject_SetAttr(PyObject *v, PyObject *name, PyObject *value)
 		return err;
 	}
 	if (tp->tp_setattr != NULL) {
-		err = (*tp->tp_setattr)(v, _PyUnicode_AsString(name), value);
+		char *name_str = _PyUnicode_AsString(name);
+		if (name_str == NULL)
+			return -1;
+		err = (*tp->tp_setattr)(v, name_str, value);
 		Py_DECREF(name);
 		return err;
 	}
@@ -1017,8 +1024,8 @@ PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
 	}
 
 	PyErr_Format(PyExc_AttributeError,
-		     "'%.50s' object has no attribute '%.400s'",
-		     tp->tp_name, _PyUnicode_AsString(name));
+		     "'%.50s' object has no attribute '%U'",
+		     tp->tp_name, name);
   done:
 	Py_DECREF(name);
 	return res;