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gh-105922: PyImport_AddModule() uses Py_DECREF() #105998

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gh-105922: PyImport_AddModule() uses Py_DECREF() #105998

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cef28f1
gh-105922: PyImport_AddModule() uses Py_DECREF()
vstinner Jun 22, 2023
c2490a4
Fix for custom sys.modules type
vstinner Jun 22, 2023
3262468
Add test
vstinner Jun 22, 2023
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gh-105922: PyImport_AddModule() uses Py_DECREF() 
Rewrite PyImport_AddModule() to simply call Py_DECREF(), rather than
creating a weak reference,  to get a borrowed reference to the
module.
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@vstinner
vstinner committed Jun 22, 2023
commit cef28f1c62a75b6ba867ecc7aa989f51ea0930e9
11 changes: 1 addition & 10 deletions Python/import.c
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Original file line number Diff line number Diff line change
Expand Up @@ -372,16 +372,7 @@ PyImport_AddModuleObject(PyObject *name)
if (!mod) {
return NULL;
}

// gh-86160: PyImport_AddModuleObject() returns a borrowed reference
PyObject *ref = PyWeakref_NewRef(mod, NULL);
Py_DECREF(mod);
if (ref == NULL) {
return NULL;
}

mod = PyWeakref_GetObject(ref);
Py_DECREF(ref);
Py_DECREF(mod); // sys.modules holds a strong reference
return mod; /* borrowed reference */
}

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