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Add the fix for issue 4509 to the mapping methods.

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This commit is contained in:
Alexandre Vassalotti 2009-07-05 19:57:00 +00:00
parent 1d2e8b90cc
commit 47137250ff
2 changed files with 32 additions and 27 deletions
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10
Modules/arraymodule.c
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@ -1699,6 +1699,16 @@ array_ass_subscr(arrayobject* self, PyObject* item, PyObject* value)
if ((step > 0 && stop < start) ||
(step < 0 && stop > start))
stop = start;
/* Issue #4509: If the array has exported buffers and the slice
assignment would change the size of the array, fail early to make
sure we don't modify it. */
if ((needed == 0 || slicelength != needed) && self->ob_exports > 0) {
PyErr_SetString(PyExc_BufferError,
"cannot resize an array that is exporting buffers");
return -1;
}
if (step == 1) {
if (slicelength > needed) {
memmove(self->ob_item + (start + needed) * itemsize,