instrumentation.c: Use-after-Py_DECREF comparison in call_one_instrument
Bug report
Bug description:
Summary
At line 992-993, Py_DECREF(res) then res compared to &_PyInstrumentation_DISABLE. Using a potentially-freed pointer in comparison is UB per C standard.
This is a sub-issue of #146102 with gist details
CPython versions tested on:
CPython main branch
Operating systems tested on:
No response