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-rw-r--r--Lib/ctypes/__init__.py3
-rw-r--r--Lib/ctypes/test/test_sizes.py9
2 files changed, 11 insertions, 1 deletions
diff --git a/Lib/ctypes/__init__.py b/Lib/ctypes/__init__.py
index 1283f28..8782db9 100644
--- a/Lib/ctypes/__init__.py
+++ b/Lib/ctypes/__init__.py
@@ -459,10 +459,13 @@ _pointer_type_cache[None] = c_void_p
if sizeof(c_uint) == sizeof(c_void_p):
c_size_t = c_uint
+ c_ssize_t = c_int
elif sizeof(c_ulong) == sizeof(c_void_p):
c_size_t = c_ulong
+ c_ssize_t = c_long
elif sizeof(c_ulonglong) == sizeof(c_void_p):
c_size_t = c_ulonglong
+ c_ssize_t = c_longlong
# functions
diff --git a/Lib/ctypes/test/test_sizes.py b/Lib/ctypes/test/test_sizes.py
index 0509cbb..f9b5e97 100644
--- a/Lib/ctypes/test/test_sizes.py
+++ b/Lib/ctypes/test/test_sizes.py
@@ -1,8 +1,11 @@
# Test specifically-sized containers.
-import unittest
from ctypes import *
+import sys
+import unittest
+
+
class SizesTestCase(unittest.TestCase):
def test_8(self):
self.assertEqual(1, sizeof(c_int8))
@@ -23,5 +26,9 @@ class SizesTestCase(unittest.TestCase):
def test_size_t(self):
self.assertEqual(sizeof(c_void_p), sizeof(c_size_t))
+ def test_ssize_t(self):
+ self.assertEqual(sizeof(c_void_p), sizeof(c_ssize_t))
+
+
if __name__ == "__main__":
unittest.main()