bpo-31618: Move opcode tracing to occur after the possible update to f_lineno.#3798
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gwk
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@ncoghlan any thoughts on this? I'd really like to begin using the feature on master. Thanks! |
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Ugh, and having added the "Skip News" label, I just realised that isn't right - this should have its own news entry, because the feature already shipped in the first two alpha releases. @gwk Would you mind preparing a PR with a suitable NEWS snippet based on what you wrote in the opening PR comment? |
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Thanks for the fix though, and sorry for neglecting the PR for so long :) |
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This patch moves the new opcode tracing added in commit 5a85167 to happen after frame->f_lineno is updated. With this patch, when both f_trace_lines and f_trace_opcodes are enabled the trace function will see the same line number for both the 'line' and 'opcode' events.
A side effect of this patch is that the order of event emission has been switched; 'line' now happens before 'opcode'. Maintaining the current order would require more elaborate logic.
https://bugs.python.org/issue31618