Meador Inge <[email protected]> added the comment:
> Note that there is at least one other place where alloca() is
> used with potentially large values:
Ouch! I found three more crashers (including the one you found)
by grepping for 'alloca' in ctypes:
>>> from ctypes import *
>>> T = type('x' * 2 ** 25, (Structure,), {})
>>> p = POINTER(T)
Segmentation fault (core dumped)
>>> from ctypes import *
>>> p = POINTER('x' * 2 ** 25)
Segmentation fault (core dumped)
>>> from ctypes import *
>>> NARGS = 2 ** 20
>>> proto = CFUNCTYPE(None, *(c_int,) * NARGS)
>>> def func(*args):
... return (1, "abc", None)
...
>>> cb = proto(func)
>>> cb(*(1,) * NARGS)
Segmentation fault (core dumped)
I will fix those too.
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Python tracker <[email protected]>
<http://bugs.python.org/issue12881>
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