[issue11697] Unsigned type in mmap_move_method

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

Did you see a compiler warning? Indeed, this function (mmap.move) decodes its arguments with:
   PyArg_ParseTuple(args, "kkk:move", &dest, &src, &cnt)
This looks wrong to me: these three numbers should be Py_ssize_t, and decoded with "nnn".

An example of wrong behavior (on win32):
>>> m = mmap.mmap(-1, 500)
>>> m.move(2**32, 10, 4)   # Should throw a ValueError

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nosy: +amaury.forgeotdarc
stage:  -> needs patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11697>
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