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[3.14] gh-137007: Track executor before any possible deallocations (GH-137016) #142541

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Merged
Fidget-Spinner merged 1 commit into from
Dec 10, 2025
Merged

[3.14] gh-137007: Track executor before any possible deallocations (GH-137016) #142541

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1 change: 1 addition & 0 deletions 1 Misc/NEWS.d/next/Core_and_Builtins/2025-07-22-16-20-06.gh-issue-137007.1oPvvK.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fix a bug during JIT compilation failure which caused garbage collection debug assertions to fail.
5 changes: 4 additions & 1 deletion 5 Python/optimizer.c
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Expand Up @@ -1213,6 +1213,10 @@ make_executor_from_uops(_PyUOpInstruction *buffer, int length, const _PyBloomFil
assert(next_exit == -1);
assert(dest == executor->trace);
assert(dest->opcode == _START_EXECUTOR);
// Note: we MUST track it here before any Py_DECREF(executor) or
// linking of executor. Otherwise, the GC tries to untrack a
// still untracked object during dealloc.
_PyObject_GC_TRACK(executor);
_Py_ExecutorInit(executor, dependencies);
#ifdef Py_DEBUG
char *python_lltrace = Py_GETENV("PYTHON_LLTRACE");
Expand Down Expand Up @@ -1242,7 +1246,6 @@ make_executor_from_uops(_PyUOpInstruction *buffer, int length, const _PyBloomFil
return NULL;
}
#endif
_PyObject_GC_TRACK(executor);
return executor;
}

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