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[ENH] provide command line option for enabling legacy noexcept propagation

See original GitHub issue

Is your feature request related to a problem? Please describe.

As mentioned in https://github.com/cython/cython/pull/4670#issuecomment-1279918128 introducing default exception propagation in #4670 can introduce compatibility issues for cython users.

Describe the solution you’d like.

New command line option should be provided enabling legacy noexcept propagation as default:

cython -X noexcept ...

Describe alternatives you’ve considered.

No response

Additional context

No response

Issue Analytics

State:
Created a year ago
Reactions:1
Comments:7 (6 by maintainers)

Top GitHub Comments

2reactions

da-woodscommented, Oct 21, 2022

The main advantage of the per-file basis is that I think anything else would be hard to do with the current implementation.

I don’t think it’s terrible for users. I’m sure a lot will just turn it on for their existing code and forget about it. But it does at least provide a solution to not break everything immediately

1reaction

matusvalocommented, Oct 21, 2022

This new option does not reduce the burden for the migration, though. In order to migrate even just one single function, users will have to remove the option again, and then adapt the entire module, as well as potentially starting with other modules that call into the one at hand. So, the risk is high that users just add the option and leave it there, lacking the time to migrate.

Hmm as long as I understand this option can be enabled on per-file bases. So users can put it to all files and gradually remove it. But I am not sure if this is good approach for users or not…

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