bpo-42823: Update frame.f_lineno before any call to the (C) tracing function.#24150
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markshannon merged 1 commit intoJan 7, 2021
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…nimizes breakage and ensures PyFrame_GetLineNumber is efficient.
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Mar 13, 2021
…ythonGH-24150) * Minimizes breakage of C extensions and ensures PyFrame_GetLineNumber is efficient.
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Minimizes breakage and ensures PyFrame_GetLineNumber is efficient.
This PR sets the C field
frame.f_linenoto the actual line number before any call to a tracing function, and sets it back to zero after the call. This:frame.f_linenoalways holds same value as the Python attributePyFrame_GetLineNumber()efficient, as it will not need to do any computation when called within a tracing function.Should have no effect when tracing is turned off.
https://bugs.python.org/issue42823