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gh-142276: Watch attribute loads when promoting JIT constants - #142303
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…e-142276.H4j8hP.rst Co-authored-by: Savannah Ostrowski <savannah@python.org>
…thon into watch_attribute_loads
Fidget-Spinner
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Dec 6, 2025
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@YuanchengJiang do I have your permission to use your reproducer for the test case please? |
YuanchengJiang
commented
Dec 6, 2025
@Fidget-Spinner Thanks for addressing the issue. Feel free to use my reproducers ;) |
markshannon
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Dec 8, 2025
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Thanks for fixing this.
Could we simplify test, by changing the attribute between calls to the optimized function, and avoid needing threads? LGTM, either way.
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The problem is that we did not watch attribute promotion to constants.
I believe the code was added by @brandtbucher ? So pinging Brandt for a review.
_POP_TOP_INT.c:119: _Py_CODEUNIT *_JIT_ENTRY(_PyInterpreterFrame *, _PyStackRef *, PyThreadState *): Assertion 'PyLong_CheckExact(PyStackRef_AsPyObjectBorrow(value))' failed#142276