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bpo-46417: _PyTypes_FiniTypes() clears object and type by vstinner · Pull Request #30798 · python/cpython · GitHub

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bpo-46417: _PyTypes_FiniTypes() clears object and type #30798

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Merged
vstinner merged 1 commit into from
Jan 22, 2022
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bpo-46417: _PyTypes_FiniTypes() clears object and type #30798

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26 changes: 11 additions & 15 deletions Objects/object.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1840,7 +1840,12 @@ _PyTypes_InitState(PyInterpreterState *interp)


static PyTypeObject* static_types[] = {
// base types
// The two most important base types: must be initialized first and
// deallocated last.
&PyBaseObject_Type,
&PyType_Type,

// Static types with base=&PyBaseObject_Type
&PyAsyncGen_Type,
&PyByteArrayIter_Type,
&PyByteArray_Type,
Expand Down Expand Up @@ -1955,29 +1960,20 @@ _PyTypes_InitTypes(PyInterpreterState *interp)
return _PyStatus_OK();
}

#define INIT_TYPE(TYPE) \
do { \
if (PyType_Ready(&(TYPE)) < 0) { \
return _PyStatus_ERR("Can't initialize " #TYPE " type"); \
} \
} while (0)

// Base types
INIT_TYPE(PyBaseObject_Type);
INIT_TYPE(PyType_Type);
assert(PyBaseObject_Type.tp_base == NULL);
assert(PyType_Type.tp_base == &PyBaseObject_Type);

// All other static types (unless initialized elsewhere)
for (size_t i=0; i < Py_ARRAY_LENGTH(static_types); i++) {
PyTypeObject *type = static_types[i];
if (PyType_Ready(type) < 0) {
return _PyStatus_ERR("Can't initialize types");
}
if (type == &PyType_Type) {
// Sanitify checks of the two most important types
assert(PyBaseObject_Type.tp_base == NULL);
assert(PyType_Type.tp_base == &PyBaseObject_Type);
}
}

return _PyStatus_OK();
#undef INIT_TYPE
}


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