[issue33742] Unsafe memory access in PyStructSequence_InitType

[Xiang Zhang]

Xiang Zhang <angwerzx at 126.com> added the comment:

I don't think here is a problem. It crashes because you preallocate the type object in a wrong way. You should not just does a malloc and then passes it to the API. In this way, you are able to crash many APIs. For example, malloc a dictobject and then pass it to PyDict_SetItem could highly possibly crash. You should use PyDict_New to allocate the dictobject. Also here, you need to use PyType_GenericAlloc(&PyType_Type, 0) to allocate the type object, not just a malloc.

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nosy: +xiang.zhang

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33742>
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