[Python-checkins] r58955 - in python/branches/release25-maint: Lib/test/seq_tests.py Objects/listobject.c
guido.van.rossum
python-checkins at python.org
Mon Nov 12 21:04:41 CET 2007
Author: guido.van.rossum
Date: Mon Nov 12 21:04:41 2007
New Revision: 58955
Modified:
python/branches/release25-maint/Lib/test/seq_tests.py
python/branches/release25-maint/Objects/listobject.c
Log:
Issue 1704621. Fix segfaults in list_repeat() and list_inplace_repeat().
The C changes aren't quite the same as the patch given there; the test is.
Modified: python/branches/release25-maint/Lib/test/seq_tests.py
==============================================================================
--- python/branches/release25-maint/Lib/test/seq_tests.py (original)
+++ python/branches/release25-maint/Lib/test/seq_tests.py Mon Nov 12 21:04:41 2007
@@ -306,6 +306,13 @@
self.assertEqual(self.type2test(s)*(-4), self.type2test([]))
self.assertEqual(id(s), id(s*1))
+ def test_bigrepeat(self):
+ x = self.type2test([0])
+ x *= 2**16
+ self.assertRaises(MemoryError, x.__mul__, 2**16)
+ if hasattr(x, '__imul__'):
+ self.assertRaises(MemoryError, x.__imul__, 2**16)
+
def test_subscript(self):
a = self.type2test([10, 11])
self.assertEqual(a.__getitem__(0L), 10)
Modified: python/branches/release25-maint/Objects/listobject.c
==============================================================================
--- python/branches/release25-maint/Objects/listobject.c (original)
+++ python/branches/release25-maint/Objects/listobject.c Mon Nov 12 21:04:41 2007
@@ -487,10 +487,10 @@
if (n < 0)
n = 0;
size = a->ob_size * n;
- if (size == 0)
- return PyList_New(0);
if (n && size/n != a->ob_size)
return PyErr_NoMemory();
+ if (size == 0)
+ return PyList_New(0);
np = (PyListObject *) PyList_New(size);
if (np == NULL)
return NULL;
@@ -661,7 +661,7 @@
size = PyList_GET_SIZE(self);
- if (size == 0) {
+ if (size == 0 || n == 1) {
Py_INCREF(self);
return (PyObject *)self;
}
@@ -672,7 +672,10 @@
return (PyObject *)self;
}
- if (list_resize(self, size*n) == -1)
+ p = size*n;
+ if (p/n != size)
+ return PyErr_NoMemory();
+ if (list_resize(self, p) == -1)
return NULL;
p = size;
@@ -2927,4 +2930,3 @@
return 0;
return len;
}
-
More information about the Python-checkins
mailing list