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bpo-44050: Extension modules can share state when they don't support sub-interpreters. (GH-27794) (GH-28738)

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Automerge-Triggered-By: GH:encukou
(cherry picked from commit b9bb74871b)

Co-authored-by: Hai Shi <shihai1992@gmail.com>
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Miss Islington (bot) 2021-10-05 09:34:59 -07:00 • committed by GitHub
parent d0d0909a3a
commit d0d29655ff
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4 changed files with 59 additions and 1 deletions
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Python/import.c
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@ -441,7 +441,9 @@ _PyImport_FixupExtensionObject(PyObject *mod, PyObject *name,
return -1;
}
if (_Py_IsMainInterpreter(tstate->interp)) {
// bpo-44050: Extensions and def->m_base.m_copy can be updated
// when the extension module doesn't support sub-interpreters.
if (_Py_IsMainInterpreter(tstate->interp) || def->m_size == -1) {
if (def->m_size == -1) {
if (def->m_base.m_copy) {
/* Somebody already imported the module,