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Date:      Mon, 18 Apr 2016 20:15:34 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 208908] lang/beignet: Fix build with libc++ 3.8.0
Message-ID:  <bug-208908-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D208908

            Bug ID: 208908
           Summary: lang/beignet: Fix build with libc++ 3.8.0
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: x11@FreeBSD.org
          Reporter: dim@FreeBSD.org
             Flags: maintainer-feedback?(x11@FreeBSD.org)
          Assignee: x11@FreeBSD.org

Created attachment 169455
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D169455&action=
=3Dedit
Replace abs() on unsigned arguments in lang/beignet

During the exp-run in bug 208158, it was found that lang/beignet gives erro=
rs
with libc++ 3.8.0 [1]:

/wrkdirs/usr/ports/lang/beignet/work/Beignet-1.1.1-Source/backend/src/backe=
nd/gen_insn_selection.cpp:1156:27:
error: call to 'abs' is ambiguous
    insn->extra.longjmp =3D abs(index - origin) > 800;
                          ^~~

This is because abs() is being called with unsigned arguments.  Fix this by
calculating the unsigned difference in a safe manner.

[1]
http://package18.nyi.freebsd.org/data/headamd64PR208158-default/2016-03-22_=
18h30m05s/logs/errors/beignet-1.1.1.log

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