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cdefs: Allow _XOPEN_SOURCE >= 800
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Authored by imp on Nov 14 2024, 6:59 PM.
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Details

Summary

When the user asks for XOPEN_SOURCE >= 800, set __XSI_VISIBLE to 800 for
POSIX 2024.

Sponsored by: Netflix

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rG FreeBSD src repository
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imp requested review of this revision.Nov 14 2024, 6:59 PM
imp created this revision.
brooks added a subscriber: brooks.

I wish there was a comment justifying the - 0 pattern...

This revision is now accepted and ready to land.Nov 14 2024, 7:20 PM

I wish there was a comment justifying the - 0 pattern...

I'll add one in a future commit.

In D47574#1085196, @imp wrote:

I wish there was a comment justifying the - 0 pattern...

I'll add one in a future commit.

At this point, it's likely a historic practice we can drop. Peter Wemm added it 22 years
ago:
Deal with "#define _XOPEN_SOURCE" in header files (eg: XFree86 4.2.0)
so I'll add a comment to that effect. I'd just drop it, but a code search says it's
still a common idium.

This revision was automatically updated to reflect the committed changes.