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[3.14] gh-140936: Fix JIT assertion crash at finalization if some generator is alive (GH-140969) (GH-141494)

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gh-140936: Fix JIT assertion crash at finalization if some generator is alive (GH-140969)
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Mikhail Efimov 2025-11-13 19:11:57 +03:00 • committed by GitHub
parent 425e423f9f
commit 48b7d75aaf
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2 changed files with 28 additions and 1 deletions
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9
Python/optimizer.c
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@ -116,7 +116,14 @@ _PyOptimizer_Optimize(
_PyExecutorObject **executor_ptr, int chain_depth)
{
_PyStackRef *stack_pointer = frame->stackpointer;
assert(_PyInterpreterState_GET()->jit);
PyInterpreterState *interp = _PyInterpreterState_GET();
if (!interp->jit) {
// gh-140936: It is possible that interp->jit will become false during
// interpreter finalization. However, the specialized JUMP_BACKWARD_JIT
// instruction may still be present. In this case, we should
// return immediately without optimization.
return 0;
}
// The first executor in a chain and the MAX_CHAIN_DEPTH'th executor *must*
// make progress in order to avoid infinite loops or excessively-long
// side-exit chains. We can only insert the executor into the bytecode if