Eryk Sun added the comment:
mmap.mmap(-1, 2**31 + 5) could be used here. If the pages are never touched it
won't increase the working set size. It merely maps the address range with
demand-zero pages.
Unpatched:
>>> mmap.mmap(-1, 2**31 + 5).__len__()
-2147483643
Patched:
>>> mmap.mmap(-1, 2**31 + 5).__len__()
2147483653L
----------
nosy: +eryksun
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<http://bugs.python.org/issue26423>
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