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bpo-36854: Fix refleak in subinterpreter (GH-17331)

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finalize_interp_clear() now explicitly clears the codec registry and
then trigger a GC collection to clear all references.
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Victor Stinner 2019-11-22 10:58:00 +01:00 • committed by GitHub
parent 91daa9d722
commit 310e2d2517
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2 changed files with 13 additions and 2 deletions
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8
Python/pylifecycle.c
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@ -1210,6 +1210,14 @@ finalize_interp_clear(PyThreadState *tstate)
{
int is_main_interp = _Py_IsMainInterpreter(tstate);
/* bpo-36854: Explicitly clear the codec registry
and trigger a GC collection */
PyInterpreterState *interp = tstate->interp;
Py_CLEAR(interp->codec_search_path);
Py_CLEAR(interp->codec_search_cache);
Py_CLEAR(interp->codec_error_registry);
_PyGC_CollectNoFail();
/* Clear interpreter state and all thread states */
PyInterpreterState_Clear(tstate->interp);