diff -r 0d2c364c7e5d Modules/_io/bufferedio.c
--- a/Modules/_io/bufferedio.c	Sat Apr 13 20:12:53 2013 +0300
+++ b/Modules/_io/bufferedio.c	Sat Apr 13 14:31:12 2013 -0400
@@ -2263,9 +2263,14 @@
 static PyObject *
 _forward_call(buffered *self, _Py_Identifier *name, PyObject *args)
 {
- PyObject *func = _PyObject_GetAttrId((PyObject *)self, name);
- PyObject *ret;
+ PyObject *func, *ret;
+ if (self == NULL) {
+ PyErr_SetString(PyExc_RuntimeError,
+ "the BufferedRWPair has not been initialized");
+ return NULL;
+ }
 
+ func = _PyObject_GetAttrId((PyObject *)self, name);
 if (func == NULL) {
 PyErr_SetString(PyExc_AttributeError, name->string);
 return NULL;
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file29814/bufferedio.patch">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file29814/bufferedio.patch" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
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<option value="contrast" selected="selected">配色反転</option>
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<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
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</div>