WIP: Always pass errno argument for OSError subclasses #109720
Draft
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
It solves #109601, but covers not only TimeoutError, but other OSError subclasses.
With #109714 these changes will be unneeded (except that some calls may be improved to set filename), because errno and strerror will be set automatically. This PR is a demonstration of changes when do it explicitly. #109714 be accepted and we decide to apply these changes to older versions, this PR will be converted in a backport PR.