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32ec5a61b7
Also make the titles and one line summaries a little more consistent (at least for diagnsotic groups and upcoming language features, haven't gone through the educational notes).
19 lines
573 B
Markdown
19 lines
573 B
Markdown
# Unknown warning group (UnknownWarningGroup)
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Warnings for unrecognized warning groups specified in `-Wwarning` or `-Werror`.
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## Overview
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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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