Charles-François Natali <neolo...@free.fr> added the comment:
Confirmed with default.
The problem is that the TextIOWrapper gets collected after the underlying
BufferedRWPair has been cleared (tp_clear) by the garbage collector: when
_PyIOBase_finalize() is called for the TextIOWrapper, it checks if the textio
is closed, which indirectly checks if the underlying rwpair is closed:
"""
static PyObject *
bufferedrwpair_closed_get(rwpair *self, void *context)
{
return PyObject_GetAttr((PyObject *) self->writer, _PyIO_str_closed);
}
"""
Since self->writer has already been set to NULL by bufferedrwpair_clear(),
PyObject_GetAttr() segfaults.
@Victor
Could you try the patch attached?
----------
keywords: +patch
nosy: +amaury.forgeotdarc, neologix, pitrou
versions: +Python 3.3
Added file: http://bugs.python.org/file23277/buffered_closed_gc.diff
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