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Fri Feb 6 21:26:52 EST 2004 · https://mail.python.org/pipermail/python-dev/2004-February/042424.html

On Fri, Feb 06, 2004 at 11:04:59AM -0800, rhettinger at users.sourceforge.net wrote:
>
> + static PyObject *
> + deque_extend(dequeobject *deque, PyObject *iterable)
> + {
> + 	PyObject *it, *item;
> + 
> + 	it = PyObject_GetIter(iterable);
> + 	if (it == NULL)
> + 		return NULL;
> + 
> + 	while ((item = PyIter_Next(it)) != NULL) {
> + 		deque->rightindex++;
> + 		deque->len++;
> + 		if (deque->rightindex == BLOCKLEN) {
> + 			block *b = newblock(deque->rightblock, NULL);
> + 			if (b == NULL)
> + 				return NULL;

In deque_extend and deque_extendleft, doesn't there need
to be a Py_DECREF(it); before returning when newblock fails?

> + 			assert(deque->rightblock->rightlink == NULL);
> + 			deque->rightblock->rightlink = b;
> + 			deque->rightblock = b;
> + 			deque->rightindex = 0;
> + 		}
> + 		Py_INCREF(item);
> + 		deque->rightblock->data[deque->rightindex] = item;
> + 	}
> + 	Py_DECREF(it);
> + 	if (PyErr_Occurred()) 
> + 		return NULL;
> + 	Py_RETURN_NONE;
> + }

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Showing content from https://mail.python.org/pipermail/python-dev/2004-February/042424.html below:

[Python-checkins] python/dist/src/Modules collectionsmodule.c, 1.2, 1.3