diff options
Diffstat (limited to 'Modules/cStringIO.c')
| -rw-r--r-- | Modules/cStringIO.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Modules/cStringIO.c b/Modules/cStringIO.c index fd28aa9..bdc9f00 100644 --- a/Modules/cStringIO.c +++ b/Modules/cStringIO.c @@ -144,7 +144,8 @@ PyDoc_STRVAR(IO_isatty__doc__, "isatty(): always returns 0"); static PyObject * IO_isatty(IOobject *self, PyObject *unused) { - Py_INCREF(Py_False); + if (!IO__opencheck(self)) return NULL; + Py_INCREF(Py_False); return Py_False; } |