[Bug 222247] libmsun tests does not compile during a buildworld

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222247

Konstantin Belousov <kib at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |kib at FreeBSD.org

--- Comment #7 from Konstantin Belousov <kib at FreeBSD.org> ---
(In reply to Ryan Libby from comment #6)
First, we are the implementation.  So at least in the hosted case, we are
allowed to introduce the __* and _[A_Z] symbols.

Second, defining something in userspace and then undefining it at the end of
the file still breaks user namespaces.  Consider what would happen if user
defines an allowed symbol and then includes such file.

Also, note that the restrictions on the user namespace pollution are only
applicable to the standard-specified files.

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