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gh-135228: When @dataclass(slots=True) replaces a dataclass, make the original class collectible (take 2) #137047

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Merged
encukou merged 9 commits into from
Aug 12, 2025
Merged

gh-135228: When @dataclass(slots=True) replaces a dataclass, make the original class collectible (take 2) #137047

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916ce1b
gh-135228: When @dataclass(slots=True) replaces a dataclass, make the…
JelleZijlstra Jul 22, 2025
6dc0f48
Use a new private sys function instead
JelleZijlstra Jul 23, 2025
b9fb155
obsolete comment
JelleZijlstra Jul 23, 2025
52c7d2b
restrict to heap types
JelleZijlstra Jul 23, 2025
250f3e9
more paranoid
JelleZijlstra Jul 25, 2025
a9483b4
Apply suggestions from code review
JelleZijlstra Jul 29, 2025
8c2c1e1
Update Python/sysmodule.c
JelleZijlstra Jul 30, 2025
2d3bd7c
Feedback from Petr
JelleZijlstra Aug 5, 2025
06618d8
use AC for type checking
JelleZijlstra Aug 12, 2025
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restrict to heap types
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@JelleZijlstra
JelleZijlstra committed Jul 23, 2025
commit 52c7d2bb6e192b25909850697a3174df689bb6d6
4 changes: 4 additions & 0 deletions Python/sysmodule.c
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Expand Up @@ -2661,6 +2661,10 @@ sys__clear_type_descriptors(PyObject *module, PyObject *type)
return NULL;
}
PyTypeObject *typeobj = (PyTypeObject *)(type);
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if (!_PyType_HasFeature(typeobj, Py_TPFLAGS_HEAPTYPE)) {
PyErr_SetString(PyExc_TypeError, "argument must be a heap type");
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return NULL;
}
PyObject *dict = _PyType_GetDict(typeobj);
if (PyDict_PopString(dict, "__dict__", NULL) < 0) {
return NULL;
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