Forward-port of r52136: a review of overflow-detecting code.

* unified the way intobject, longobject and mystrtoul handle
  values around -sys.maxint-1.

* in general, trying to entierely avoid overflows in any computation
  involving signed ints or longs is extremely involved.  Fixed a few
  simple cases where a compiler might be too clever (but that's all
  guesswork).

* more overflow checks against bad data in marshal.c.

* 2.5 specific: fixed a number of places that were still confusing int
  and Py_ssize_t.  Some of them could potentially have caused
  "real-world" breakage.

* list.pop(x): fixing overflow issues on x was messy.  I just reverted
  to PyArg_ParseTuple("n"), which does the right thing.  (An obscure
  test was trying to give a Decimal to list.pop()... doesn't make
  sense any more IMHO)

* trying to write a few tests...

1 files changed, 0 insertions, 3 deletions

diff --git a/Lib/test/list_tests.py b/Lib/test/list_tests.py
index 14b54c7..7c6623a 100644
--- a/Lib/test/list_tests.py
+++ b/Lib/test/list_tests.py
@@ -269,7 +269,6 @@ class CommonTest(seq_tests.CommonTest):
         self.assertRaises(TypeError, a.insert)
 
     def test_pop(self):
-        from decimal import Decimal
         a = self.type2test([-1, 0, 1])
         a.pop()
         self.assertEqual(a, [-1, 0])
@@ -281,8 +280,6 @@ class CommonTest(seq_tests.CommonTest):
         self.assertRaises(IndexError, a.pop)
         self.assertRaises(TypeError, a.pop, 42, 42)
         a = self.type2test([0, 10, 20, 30, 40])
-        self.assertEqual(a.pop(Decimal(2)), 20)
-        self.assertRaises(IndexError, a.pop, Decimal(25))
 
     def test_remove(self):
         a = self.type2test([0, 0, 1])