[issue16865] ctypes arrays >=2GB in length causes exception
David Heffernan
report at bugs.python.org
Wed May 10 05:50:46 EDT 2017
David Heffernan added the comment:
I just ran into this issue. I'm trying to write code like this:
(ctypes.c_char*bufferLen).from_buffer(buffer)
where buffer is a bytearray. When bufferLen is greater than 2GB I fail foul of this code in _ctypes.c
long length;
....
length = PyLong_AsLongAndOverflow(length_attr, &overflow);
if (overflow) {
PyErr_SetString(PyExc_OverflowError,
"The '_length_' attribute is too large");
Py_DECREF(length_attr);
goto error;
}
Surely this should not be forcing long on us. Can't it use PyLong_AsSsize_t or perhaps PyLong_AsLongLongAndOverflow?
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nosy: +David Heffernan
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<http://bugs.python.org/issue16865>
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