Message 301274 - Python tracker

Message301274

Author	ncoghlan
Recipients	Mark.Shannon, deleted0524, erik.bray, gregory.p.smith, jdemeyer, ncoghlan, njs, xgdomingo, yselivanov
Date	2017-09-04.22:04:24
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1504562664.07.0.711743152345.issue29988@psf.upfronthosting.co.za>
In-reply-to

Content
https://github.com/ncoghlan/cpython/pull/2/files provides a test case that reliably reproduces the problem for both synchronous and asynchronous context managers. It's inspired by Nathaniel's proposal above, but relies on a modified version of sys.settrace that runs the trace function after every opcode, not just every time the line number changes or we jump backwards in the bytecode. Issue 31344 is a separate issue to add that underlying capability so we can write this test case.

Content

https://github.com/ncoghlan/cpython/pull/2/files provides a test case that reliably reproduces the problem for both synchronous and asynchronous context managers.

It's inspired by Nathaniel's proposal above, but relies on a modified version of sys.settrace that runs the trace function after every opcode, not just every time the line number changes or we jump backwards in the bytecode.

Issue 31344 is a separate issue to add that underlying capability so we can write this test case.

History
Date	User	Action	Args
2017-09-04 22:04:24	ncoghlan	set	recipients: + ncoghlan, gregory.p.smith, njs, Mark.Shannon, erik.bray, jdemeyer, yselivanov, deleted0524, xgdomingo
2017-09-04 22:04:24	ncoghlan	set	messageid: <1504562664.07.0.711743152345.issue29988@psf.upfronthosting.co.za>
2017-09-04 22:04:24	ncoghlan	link	issue29988 messages
2017-09-04 22:04:24	ncoghlan	create