Fix compiler warning.

diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index cce986d1b36e8aaae4bbf501df521c34b79079d5..5b2a0546e45961157235b729123f770e999c7b1e 100644 (file)
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -477,7 +477,7 @@ GenericCData_new(PyTypeObject *type, PyObject *args, PyObject *kwds);
 static PyObject *
 CDataType_from_buffer_copy(PyObject *type, PyObject *args)
 {
-       void *buffer;
+       const void *buffer;
        Py_ssize_t buffer_len;
        Py_ssize_t offset = 0;
        PyObject *obj, *result;