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cdefs: Enforce consistency between _XOPEN_SOURCE and _POSIX_C_SOURCE
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Authored by imp on Mar 21 2025, 5:16 PM.
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Summary

Before, we'd silently set _POSIX_C_SOURCE to the required version for
each _XOPEN_SOURCE level. This ads warnigs for when the levels don't
match.

Sponsored by: Netflix

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rG FreeBSD src repository
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Build Status
Buildable 63037
Build 59921: arc lint + arc unit

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imp requested review of this revision.Mar 21 2025, 5:16 PM
imp created this revision.