[issue44450] Generator expressions trace differently on Windows than on Mac

Ned Batchelder added the comment: Looks like this is fixed with 3.10.0rc1, thanks. -- ___ Python tracker ___ ___ Python-bugs-list

[issue44450] Generator expressions trace differently on Windows than on Mac

Mark Shannon added the comment: Ned, is this still an issue with the release candidate of 3.10? -- ___ Python tracker ___ ___

[issue44450] Generator expressions trace differently on Windows than on Mac

Ned Batchelder added the comment: This was with 3.10.0b3. I haven't got a way (yet) to build with my own-built versions of CPython. -- ___ Python tracker ___

[issue44450] Generator expressions trace differently on Windows than on Mac

Mark Shannon added the comment: Hmm, I'm a bit puzzled by that. Did you test with 3.10b3 or the latest build from the 3.10 branch with the fix to https://bugs.python.org/issue44297 included? -- ___ Python tracker

[issue44450] Generator expressions trace differently on Windows than on Mac

Ned Batchelder added the comment: I tried adding that rewritten doit as a new test, and it does not show a mac/win difference on 3.9. In fact, it doesn't show a mac/win difference on 3.10! https://github.com/nedbat/coveragepy/actions/runs/956791631 --

[issue44450] Generator expressions trace differently on Windows than on Mac

Mark Shannon added the comment: I think this is a combination of https://bugs.python.org/issue44297 and the PREDICT macros. I don't have a windows machine to confirm this on, but I suspect that if you rewrite `doit` as: def doit(): o = ((1,2), (3,4)) o = (a for a in

[issue44450] Generator expressions trace differently on Windows than on Mac

Change by STINNER Victor : Removed file: https://bugs.python.org/file50119/ខ្មែរសប់លក់ទំនិញគ្រប់ប្រភេទ ___ Python tracker ___ ___

[issue44450] Generator expressions trace differently on Windows than on Mac

Change by E. Paine : -- components: -2to3 (2.x to 3.x conversion tool), Argument Clinic, Build, C API, Cross-Build, Demos and Tools, Distutils, Documentation, Extension Modules, FreeBSD, IDLE, IO, Installation, Library (Lib), Parser, Regular Expressions, SSL, Subinterpreters, Tests,

[issue44450] Generator expressions trace differently on Windows than on Mac

Ned Batchelder added the comment: This happens with all the 3.10 betas, and does not happen in 3.9 and earlier: https://github.com/nedbat/coveragepy/runs/2864611225 (Sorry, other failures with earlier 3.10 betas obscured the mac/win difference.) --

[issue44450] Generator expressions trace differently on Windows than on Mac

Mark Shannon added the comment: Ned, is this a regression (does 3.9 do the right thing on Windows) or an inconsistency between Mac and Windows? I suspect this might have something to do with the PREDICT macros. If that the were the case 3.9 should show the same inconsistency between Windows

[issue44450] Generator expressions trace differently on Windows than on Mac

New submission from Ned Batchelder : Here is a trace involving generator expressions. Using 3.10.0b3 on Mac, there are "line" events within the expression. Those events are missing on Windows. --- 8< --- import linecache, sys def trace(frame, event, arg): #