Using the upcoming existential any feature via
'-Xswiftc -enable-upcoming-feature -Xswiftc ExistentialAny' causes build failures on non-Darwin platforms as a test observer class is generated which doesn't use explicit 'any'.
This is an issue for library maintainers who want to enforce this in CI.
MaxDesiatov
commented
3 months ago
Using the upcoming existential any feature via '-Xswiftc -enable-upcoming-feature -Xswiftc ExistentialAny' causes build failures on non-Darwin platforms as a test observer class is generated which doesn't use explicit 'any'.
This is an issue for library maintainers who want to enforce this in CI.