commit 78980438683d98076cd541d995a868fb5c9e4277
author Serhiy Storchaka <storchaka@gmail.com> Tue Jan 15 01:12:17 2013 +0200
committer Serhiy Storchaka <storchaka@gmail.com> Tue Jan 15 01:12:17 2013 +0200
tree 6003323bfe4c38f0d9ca17f126fbcdf782752600
parent 5f1cfbb5c056564e2692d2abcdc82f1944a3b2ec

Issue #15989: Fix several occurrences of integer overflow
when result of PyLong_AsLong() narrowed to int without checks.

Modules/_io/fileio.c

diff --git a/Modules/_io/fileio.c b/Modules/_io/fileio.c
index 34425b7..fd7c1fc 100644
--- a/Modules/_io/fileio.c
+++ b/Modules/_io/fileio.c
@@ -244,7 +244,7 @@
         return -1;
     }
 
-    fd = PyLong_AsLong(nameobj);
+    fd = _PyLong_AsInt(nameobj);
     if (fd < 0) {
         if (!PyErr_Occurred()) {
             PyErr_SetString(PyExc_ValueError,
@@ -382,7 +382,7 @@
                 goto error;
             }
 
-            self->fd = PyLong_AsLong(fdobj);
+            self->fd = _PyLong_AsInt(fdobj);
             Py_DECREF(fdobj);
             if (self->fd == -1) {
                 goto error;