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f45271f569
Since these different forms of documentation have a similar purpose, and there's already some infrastructure for educational notes, unify all of the diagnostics-related documentation in a single place. We might consider unifying these ideas in the compiler as well, but that's for another day.
16 lines
636 B
Markdown
16 lines
636 B
Markdown
# Unknown "Warning Group" Warnings (`UnknownWarningGroup`)
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The `UnknownWarningGroup` diagnostic group addresses warnings related to the specification of unrecognized warning groups in compilation flags.
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```sh
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swiftc -Werror non_existing_group file.swift
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<unknown>:0: warning: unknown warning group: 'non_existing_group'
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```
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Such warnings are emitted after the behavior for all specified warning groups has been processed, which means their behavior can also be specified. For example:
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```sh
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swiftc -Werror UnknownWarningGroup -Werror non_existing_group file.swift
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<unknown>:0: error: unknown warning group: 'non_existing_group'
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```
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