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Date:      Thu, 21 Feb 2019 23:34:03 +0000
From:      bugzilla-noreply@freebsd.org
To:        threads@FreeBSD.org
Subject:   [Bug 235583] clang error builtin-requires-header on pthread_create on powerpc64
Message-ID:  <bug-235583-13406-7h4xWAICCo@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-235583-13406@https.bugs.freebsd.org/bugzilla/>
References:  <bug-235583-13406@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235583

James Clarke <jrtc27@jrtc27.com> changed:

           What    |Removed                     |Added
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                 CC|                            |jrtc27@jrtc27.com

--- Comment #3 from James Clarke <jrtc27@jrtc27.com> ---
(In reply to David Chisnall from comment #2)

It shows up for users using the system header if they pass -Wsystem-headers,
but otherwise not.

The problem is that *any* declaration of pthread_create will trigger this
warning, since GetBuiltinType will return {} with Error =3D GE_Missing_type=
 due
to the fact that its type is "" in Builtins.def, and it only works normally
because the warning gets suppressed for system headers. I think the correct
thing to do is to give it the proper type, which I'm working on at the mome=
nt
(Clang now has syntax for function types within intrinsic type strings with=
 a
recursive parse call so you can express function pointers; it just also nee=
ds
to learn about pthread(_attr)_t).

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