[issue4460] The parameter of PyInt_AsSsize_t() is not checked to see if it is NULL
Mark Dickinson
report at bugs.python.org
Sat Nov 29 18:17:21 CET 2008
Mark Dickinson <dickinsm at gmail.com> added the comment:
I'm confused. I'm probably missing something, but why do you think such a
check is necessary? The code I'm seeing at around line 2766 is:
static Py_ssize_t
match_getindex(MatchObject* self, PyObject* index)
{
Py_ssize_t i;
if (PyInt_Check(index))
return PyInt_AsSsize_t(index);
...
Is there any reason to expect that the index argument to match_getindex
might be NULL? Even if it were, surely it would be the PyInt_Check call
that would be affected, not PyInt_AsSsize_t?
The usual pattern in Python C code is to check return values, but not
incoming arguments.
----------
nosy: +marketdickinson
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